URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 41
AFWA-OFFUTT AFB IN SPC BACKUP CAPACITY-OMAHA NEB
1110 AM EST THU MAR 13 2003
AFWA-OFFUTT AFB-OMAHA NEB AS THE SPC BACKUP HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
ALABAMA
WEST FLORIDA PANHANDLE
EXTREME SOUTHEAST MISSISSIPPI
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 1110 AM UNTIL
500 PM EST.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 80 MILES SOUTHEAST OF LAUREL
MISSISSIPPI TO 35 MILES NORTH NORTHWEST OF GADSDEN ALABAMA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...LINE OF CONVECTION IN MS WILL MOVE EWD AT 50 KTS WITH
DAMAGING WINDS LIKELY AND SOME HAIL. OTHER STORMS MAY DEVELOP ALONG
WARM FRONT ACROSS SRN AL WITH THREAT FOR LARGE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 27050.
***CURRENT WATCHES/WARNINGS/STORMS/REPORTS IN THE US***
Moderator: S2k Moderators
Forum rules
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or STORM2K.
-
ColdFront77
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1154 AM EST THU MAR 13 2003
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
DUVAL COUNTY IN NORTHEAST FLORIDA
AND NASSAU COUNTY IN NORTHEAST FLORIDA
* UNTIL 1245 PM EST
* AT 1154 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS...MOVING NORTHEAST AT 20 MPH.
* SOME LOCATIONS NEAR THE PATH OF THE STORMS THROUGH 1245 PM EST...NORMANDY AND DOWNTOWN JACKSONVILLE...NASSAU VILLAGE-RATLIFF AND TALLYRAND...CALLAHAN AND JACKSONVILLE INTERNATIONAL...OCEANWAY AND FORT CAROLINE...YULEE...
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY BUILDING AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL AND DAMAGING WINDS IN EXCESS OF 55 MPH.
LAT...LON 3059 8199 3023 8192 3038 8145 3071 8156
$$
BROYLES
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1154 AM EST THU MAR 13 2003
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
DUVAL COUNTY IN NORTHEAST FLORIDA
AND NASSAU COUNTY IN NORTHEAST FLORIDA
* UNTIL 1245 PM EST
* AT 1154 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS...MOVING NORTHEAST AT 20 MPH.
* SOME LOCATIONS NEAR THE PATH OF THE STORMS THROUGH 1245 PM EST...NORMANDY AND DOWNTOWN JACKSONVILLE...NASSAU VILLAGE-RATLIFF AND TALLYRAND...CALLAHAN AND JACKSONVILLE INTERNATIONAL...OCEANWAY AND FORT CAROLINE...YULEE...
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY BUILDING AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL AND DAMAGING WINDS IN EXCESS OF 55 MPH.
LAT...LON 3059 8199 3023 8192 3038 8145 3071 8156
$$
BROYLES
0 likes
-
Rob-TheStormChaser
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 42
AFWA-OFFUTT AFB IN SPC BACKUP CAPACITY-OMAHA NEB
1045 AM CST THU MAR 13 2003
AFWA-OFFUTT AFB-OMAHA NEB AS THE SPC BACKUP HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHEAST LOUISIANA
COASTAL MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 1045 AM UNTIL
400 PM CST.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 85 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES SOUTHWEST OF HOUMA LOUISIANA
TO 60 MILES EAST NORTHEAST OF BATON ROUGE LOUISIANA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...UPPER FORCING WILL CONTINUE TO SUPPORT LINE OF SEVERE
STORMS ACROSS SRN LA THIS AFTERNOON. GIVEN STRONG INSTABILITY THE
MAIN THREAT WILL BE LARGE HAIL AND DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 28030.
SEVERE THUNDERSTORM WATCH NUMBER 42
AFWA-OFFUTT AFB IN SPC BACKUP CAPACITY-OMAHA NEB
1045 AM CST THU MAR 13 2003
AFWA-OFFUTT AFB-OMAHA NEB AS THE SPC BACKUP HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHEAST LOUISIANA
COASTAL MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 1045 AM UNTIL
400 PM CST.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 85 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES SOUTHWEST OF HOUMA LOUISIANA
TO 60 MILES EAST NORTHEAST OF BATON ROUGE LOUISIANA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...UPPER FORCING WILL CONTINUE TO SUPPORT LINE OF SEVERE
STORMS ACROSS SRN LA THIS AFTERNOON. GIVEN STRONG INSTABILITY THE
MAIN THREAT WILL BE LARGE HAIL AND DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 28030.
0 likes
-
Rob-TheStormChaser
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 43
AFWA-OFFUTT AFB IN SPC BACKUP CAPACITY-OMAHA NEB
220 PM EST THU MAR 13 2003
AFWA-OFFUTT AFB-OMAHA NEB AS THE SPC BACKUP HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
DISTRICT OF COLUMBIA
PORTIONS OF MARYLAND
NORTH AND WEST VIRGINIA
EXTREME SOUTHEAST WEST VIRGINIA
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 220 PM UNTIL 800
PM EST.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES SOUTH OF DUBLIN VIRGINIA TO
25 MILES NORTHEAST OF MARTINSBURG WEST VIRGINIA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...UPPER LEVEL FORCING WILL STRENGTHEN LINE OF STORMS
MOVING INTO WATCH AREA. MID LEVEL WINDS AT 40-60 KT AND 25 DEGREE
SURFACE TEMPERATURE DEWPOINT SPREAD SUGGEST THREAT OF DAMAGING
WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 26035.
SEVERE THUNDERSTORM WATCH NUMBER 43
AFWA-OFFUTT AFB IN SPC BACKUP CAPACITY-OMAHA NEB
220 PM EST THU MAR 13 2003
AFWA-OFFUTT AFB-OMAHA NEB AS THE SPC BACKUP HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
DISTRICT OF COLUMBIA
PORTIONS OF MARYLAND
NORTH AND WEST VIRGINIA
EXTREME SOUTHEAST WEST VIRGINIA
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 220 PM UNTIL 800
PM EST.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES SOUTH OF DUBLIN VIRGINIA TO
25 MILES NORTHEAST OF MARTINSBURG WEST VIRGINIA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...UPPER LEVEL FORCING WILL STRENGTHEN LINE OF STORMS
MOVING INTO WATCH AREA. MID LEVEL WINDS AT 40-60 KT AND 25 DEGREE
SURFACE TEMPERATURE DEWPOINT SPREAD SUGGEST THREAT OF DAMAGING
WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 26035.
0 likes
-
Rob-TheStormChaser
MESOSCALE DISCUSSION 0238
NWS STORM PREDICTION CENTER NORMAN OK
1123 AM CST THU MAR 13 2003
AREAS AFFECTED...NRN PA AND SRN NY
CONCERNING...HEAVY SNOW
VALID 131723Z - 132130Z
EXPECT SOME AREAS TO RECEIVE SNOWFALL RATES UP TO 1 IN/HR THRU
THE MIDDLE AFTERNOON HOURS ACROSS NRN PA AND SRN NY STATE.
RECENT WV IMAGERY DEPICTS SHORTWAVE TROUGH ADVANCING INTO NRN
OH/LK ERIE AREA AIDING IN WEAK SFC LOW DEVELOPMENT IN SRN OH/NRN
WV. ANTICYCLONIC FLOW AROUND NRN LAKES SFC HIGH IS YIELDING COLD
NELY BOUNDARY LAYER FLOW INTO THE REGION WITH SFC FREEZING LINE
FROM NERN OH EWD THRU NRN PA INTO SERN NY. OVER THE NEXT FEW
HOURS...THE COMBINATION OF MODEST WARM AIR ADVECTION AND UPWARD
VERTICAL MOTION AS THE SHORTWAVE TROUGH IMPINGES ON THE REGION
WILL AID IN THE TRANSLATION OF THE HEAVIER SNOWFALL RATES EWD
INTO SRN NY/NERN PA. BOTH ETA/RUC FCST SOUNDINGS INDICATE
DISCERNABLE MID-LVL DRYING BY 21-23Z...LIKELY INDICATIVE OF
SHORTWAVE TROUGH PASSAGE AND THE DEMISE OF THE HEAVIER SNOWFALL
RATES IN THE FCST AREA.
NWS STORM PREDICTION CENTER NORMAN OK
1123 AM CST THU MAR 13 2003
AREAS AFFECTED...NRN PA AND SRN NY
CONCERNING...HEAVY SNOW
VALID 131723Z - 132130Z
EXPECT SOME AREAS TO RECEIVE SNOWFALL RATES UP TO 1 IN/HR THRU
THE MIDDLE AFTERNOON HOURS ACROSS NRN PA AND SRN NY STATE.
RECENT WV IMAGERY DEPICTS SHORTWAVE TROUGH ADVANCING INTO NRN
OH/LK ERIE AREA AIDING IN WEAK SFC LOW DEVELOPMENT IN SRN OH/NRN
WV. ANTICYCLONIC FLOW AROUND NRN LAKES SFC HIGH IS YIELDING COLD
NELY BOUNDARY LAYER FLOW INTO THE REGION WITH SFC FREEZING LINE
FROM NERN OH EWD THRU NRN PA INTO SERN NY. OVER THE NEXT FEW
HOURS...THE COMBINATION OF MODEST WARM AIR ADVECTION AND UPWARD
VERTICAL MOTION AS THE SHORTWAVE TROUGH IMPINGES ON THE REGION
WILL AID IN THE TRANSLATION OF THE HEAVIER SNOWFALL RATES EWD
INTO SRN NY/NERN PA. BOTH ETA/RUC FCST SOUNDINGS INDICATE
DISCERNABLE MID-LVL DRYING BY 21-23Z...LIKELY INDICATIVE OF
SHORTWAVE TROUGH PASSAGE AND THE DEMISE OF THE HEAVIER SNOWFALL
RATES IN THE FCST AREA.
0 likes
-
Rob-TheStormChaser
MESOSCALE DISCUSSION 0240
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CST THU MAR 13 2003
AREAS AFFECTED...NERN TN...WRN NC...VA...ERN WV...WRN MD
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 131855Z - 132100Z
A WATCH ISSUANCE IS BEING CONSIDERED FOR PORTIONS OF THESE AREAS
IN THE NEXT FEW HOURS.
RECENT VIS IMAGERY INDICATES SHALLOW TOPPED CONVECTION
INSTIGATING TO THE EAST OF A SHORTWAVE TROUGH AMIDST A
DESTABILIZING AIRMASS IN MUCH OF VA...ERN WV...INTO MD. ERE CENT
SURFACE ANALYSIS SHOWS A SFC LOW IN WRN VA WITH A PRESSURE FALL
CENTER IN MUCH OF CNTRL VA. SURFACE TEMPERATURES RANGE FROM THE
MID 70S/LOW 80S WITH DEWPOINTS FROM THE LOW 50S TO LOW
60S...SFCOA FIELDS SHOW MUCAPE VALUES FROM 500-1000 J/KG. THE
BOUNDARY LAYER AIRMASS IN THIS REGION IS EXPECTED TO CONTINUE TO
DESTABILIZE AS INCREASING MOISTURE ADVECTION FROM SC/NC IS
EXPECTED THRU THE AFTERNOON HOURS. GIVEN PROXIMITY OF ENTRANCE
REGION TO MID-UPPER LVL SPEED MAXIMUM...EXPECTED INCREASING
MOISTURE ADVECTION...ADDITIONAL INSOLATION...AND FCST 0-6KM WINDS
FROM 45-55 KTS...SOME ORGANIZED CONVECTION IS LIKELY IN THE NEXT
FEW HOURS.
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CST THU MAR 13 2003
AREAS AFFECTED...NERN TN...WRN NC...VA...ERN WV...WRN MD
CONCERNING...SEVERE THUNDERSTORM POTENTIAL
VALID 131855Z - 132100Z
A WATCH ISSUANCE IS BEING CONSIDERED FOR PORTIONS OF THESE AREAS
IN THE NEXT FEW HOURS.
RECENT VIS IMAGERY INDICATES SHALLOW TOPPED CONVECTION
INSTIGATING TO THE EAST OF A SHORTWAVE TROUGH AMIDST A
DESTABILIZING AIRMASS IN MUCH OF VA...ERN WV...INTO MD. ERE CENT
SURFACE ANALYSIS SHOWS A SFC LOW IN WRN VA WITH A PRESSURE FALL
CENTER IN MUCH OF CNTRL VA. SURFACE TEMPERATURES RANGE FROM THE
MID 70S/LOW 80S WITH DEWPOINTS FROM THE LOW 50S TO LOW
60S...SFCOA FIELDS SHOW MUCAPE VALUES FROM 500-1000 J/KG. THE
BOUNDARY LAYER AIRMASS IN THIS REGION IS EXPECTED TO CONTINUE TO
DESTABILIZE AS INCREASING MOISTURE ADVECTION FROM SC/NC IS
EXPECTED THRU THE AFTERNOON HOURS. GIVEN PROXIMITY OF ENTRANCE
REGION TO MID-UPPER LVL SPEED MAXIMUM...EXPECTED INCREASING
MOISTURE ADVECTION...ADDITIONAL INSOLATION...AND FCST 0-6KM WINDS
FROM 45-55 KTS...SOME ORGANIZED CONVECTION IS LIKELY IN THE NEXT
FEW HOURS.
0 likes
-
Rob-TheStormChaser
MESOSCALE DISCUSSION 0241
NWS STORM PREDICTION CENTER NORMAN OK
1259 PM CST THU MAR 13 2003
AREAS AFFECTED...AL INTO SERN MS
CONCERNING...SEVERE THUNDERSTORM WATCH 41...
VALID 131859Z - 132100Z
DAMAGING WIND/LARGE HAIL THREAT WILL CONTINUE ACROSS MUCH OF
WW041.
LATEST REGIONAL RADAR LOOP SHOWS SQUALL LINE WITH EMBEDDED
BOWS/LEWPS EXTENDING FROM NEAR BHM SWWD TO AROUND LUL. ALTHOUGH
THE 18Z BHM SOUNDING INDICATED A MARGINALLY UNSTABLE
AIRMASS...THE 18Z NEW ORLEANS SOUNDING SHOWED CONSIDERABLY MORE
INSTABILITY WITH MLCAPES APPROACHING 1500-2000 J/KG. VERTICAL
WIND SHEAR PROFILES REMAIN LARGELY UNIDIRECTIONAL WITH SOME
SLIGHT INCREASE IN THE 4-6 KM AGL WINDS NOTED ON THE COLUMBUS MS
VWP. THUS IT APPEARS THAT THE THREAT OF DAMAGING WINDS AND LARGE
HAIL WILL CONTINUE WITH THE STRONGER CONVECTIVE ELEMENTS EMBEDDED
IN THE LINE. THIS IS ESPECIALLY TRUE ACROSS CNTRL PORTIONS OF
WW041 WHERE THE BEST SHEAR/INSTABILITY COMBINATION IS EXPECTED TO
BECOME ESTABLISHED.
NWS STORM PREDICTION CENTER NORMAN OK
1259 PM CST THU MAR 13 2003
AREAS AFFECTED...AL INTO SERN MS
CONCERNING...SEVERE THUNDERSTORM WATCH 41...
VALID 131859Z - 132100Z
DAMAGING WIND/LARGE HAIL THREAT WILL CONTINUE ACROSS MUCH OF
WW041.
LATEST REGIONAL RADAR LOOP SHOWS SQUALL LINE WITH EMBEDDED
BOWS/LEWPS EXTENDING FROM NEAR BHM SWWD TO AROUND LUL. ALTHOUGH
THE 18Z BHM SOUNDING INDICATED A MARGINALLY UNSTABLE
AIRMASS...THE 18Z NEW ORLEANS SOUNDING SHOWED CONSIDERABLY MORE
INSTABILITY WITH MLCAPES APPROACHING 1500-2000 J/KG. VERTICAL
WIND SHEAR PROFILES REMAIN LARGELY UNIDIRECTIONAL WITH SOME
SLIGHT INCREASE IN THE 4-6 KM AGL WINDS NOTED ON THE COLUMBUS MS
VWP. THUS IT APPEARS THAT THE THREAT OF DAMAGING WINDS AND LARGE
HAIL WILL CONTINUE WITH THE STRONGER CONVECTIVE ELEMENTS EMBEDDED
IN THE LINE. THIS IS ESPECIALLY TRUE ACROSS CNTRL PORTIONS OF
WW041 WHERE THE BEST SHEAR/INSTABILITY COMBINATION IS EXPECTED TO
BECOME ESTABLISHED.
0 likes
-
Rob-TheStormChaser
MESOSCALE DISCUSSION 0242
NWS STORM PREDICTION CENTER NORMAN OK
0126 PM CST THU MAR 13 2003
AREAS AFFECTED...SRN LA
CONCERNING...SEVERE THUNDERSTORM WATCH 42...
VALID 131926Z - 132130Z
THREAT OF DAMAGING WINDS AND SEVERE HAIL CONTINUES ACROSS SRN AND
ERN PARTS OF WW042.
RECENT RADAR DATA FROM NEW ORLEANS SUGGEST AN INTENSIFYING TREND
TO LINE OF TSTMS THAT EXTENDS FROM WASHINGTON PARISH SWWD TO ST.
JAMES PARISH. THE 18Z NEW ORLEANS SOUNDING INDICATED THAT THE
AIRMASS OVER SRN LA AND FAR SERN MS HAS BECOME MODERATELY
UNSTABLE WITH MLCAPES OF 1500-2000 J/KG. LOCAL VWP/S CONTINUE TO
INDICATE UNIDIRECTIONAL WIND PROFILES WITH A MODERATE AMOUNT OF
DEEP-LAYER SHEAR. THUS...IT APPEARS THAT THE THREAT OF DAMAGING
WINDS AND SEVERE HAIL WILL CONTINUE WITH THE STRONGEST TSTMS
GIVEN THE MODERATE AMOUNTS OF SHEAR AND INSTABILITY.
NWS STORM PREDICTION CENTER NORMAN OK
0126 PM CST THU MAR 13 2003
AREAS AFFECTED...SRN LA
CONCERNING...SEVERE THUNDERSTORM WATCH 42...
VALID 131926Z - 132130Z
THREAT OF DAMAGING WINDS AND SEVERE HAIL CONTINUES ACROSS SRN AND
ERN PARTS OF WW042.
RECENT RADAR DATA FROM NEW ORLEANS SUGGEST AN INTENSIFYING TREND
TO LINE OF TSTMS THAT EXTENDS FROM WASHINGTON PARISH SWWD TO ST.
JAMES PARISH. THE 18Z NEW ORLEANS SOUNDING INDICATED THAT THE
AIRMASS OVER SRN LA AND FAR SERN MS HAS BECOME MODERATELY
UNSTABLE WITH MLCAPES OF 1500-2000 J/KG. LOCAL VWP/S CONTINUE TO
INDICATE UNIDIRECTIONAL WIND PROFILES WITH A MODERATE AMOUNT OF
DEEP-LAYER SHEAR. THUS...IT APPEARS THAT THE THREAT OF DAMAGING
WINDS AND SEVERE HAIL WILL CONTINUE WITH THE STRONGEST TSTMS
GIVEN THE MODERATE AMOUNTS OF SHEAR AND INSTABILITY.
0 likes
-
Rob-TheStormChaser
MESOSCALE DISCUSSION 0243
NWS STORM PREDICTION CENTER NORMAN OK
0215 PM CST THU MAR 13 2003
AREAS AFFECTED...SERN LA AND AL NEWD INTO WRN GA AND THE FL PNHDL
CONCERNING...SEVERE THUNDERSTORM WATCH 41...42...
VALID 132015Z - 132215Z
IT APPEARS THAT THE THREAT OF DAMAGING WINDS AND LARGE HAIL WILL
CONTINUE E OF WW/S 0041 AND 0042. THUS...A NEW WW MAY BE
REQUIRED FARTHER E.
LINE OF STRONG/SVR TSTMS CONTINUES THIS AFTERNOON FROM W-CNTRL AL
SWWD INTO SERN LA. THE AIRMASS AHEAD OF THESE TSTMS IS MODERATELY
UNSTABLE FROM FAR SERN MS ACROSS SRN HALF OF AL AND INTO SWRN GA
WITH MLCAPES OF 1000-2000 J/KG. REGIONAL VWP/PROFILER DATA
INDICATE PRIMARILY UNIDIRECTIONAL WIND SHEAR PROFILES ACROSS THE
WARM SECTOR. HOWEVER...SOME INCREASE IN MID-LEVEL WIND SPEEDS IS
BEING OBSERVED AT THE OKOLONA MS AND DE QUEEN AR PROFILER
SITES...JUST AHEAD OF SHORTWAVE TROUGH CURRENTLY EXTENDING FROM
WRN TN SWWD INTO FAR ERN TX...PER LATEST WATER VAPOR IMAGERY.
COMBINATION OF LARGE SCALE ASCENT ASSOCIATED WITH APPROACHING
SHORTWAVE TROUGH...MODERATELY AMOUNTS OF INSTABILITY/SHEAR...AND
ESTABLISHED COLD POOL ALONG LEADING EDGE OF TSTM LINE ALL SUGGEST
A CONTINUED THREAT OF WIND/HAIL E OF CURRENT WW/S.
THUS...WW/S 041 AND 042 MAY NEED TO BE REPLACED IN THE NEXT
COUPLE OF HOURS WITH A NEW SEVERE TSTM WATCH FARTHER TO THE E.
NWS STORM PREDICTION CENTER NORMAN OK
0215 PM CST THU MAR 13 2003
AREAS AFFECTED...SERN LA AND AL NEWD INTO WRN GA AND THE FL PNHDL
CONCERNING...SEVERE THUNDERSTORM WATCH 41...42...
VALID 132015Z - 132215Z
IT APPEARS THAT THE THREAT OF DAMAGING WINDS AND LARGE HAIL WILL
CONTINUE E OF WW/S 0041 AND 0042. THUS...A NEW WW MAY BE
REQUIRED FARTHER E.
LINE OF STRONG/SVR TSTMS CONTINUES THIS AFTERNOON FROM W-CNTRL AL
SWWD INTO SERN LA. THE AIRMASS AHEAD OF THESE TSTMS IS MODERATELY
UNSTABLE FROM FAR SERN MS ACROSS SRN HALF OF AL AND INTO SWRN GA
WITH MLCAPES OF 1000-2000 J/KG. REGIONAL VWP/PROFILER DATA
INDICATE PRIMARILY UNIDIRECTIONAL WIND SHEAR PROFILES ACROSS THE
WARM SECTOR. HOWEVER...SOME INCREASE IN MID-LEVEL WIND SPEEDS IS
BEING OBSERVED AT THE OKOLONA MS AND DE QUEEN AR PROFILER
SITES...JUST AHEAD OF SHORTWAVE TROUGH CURRENTLY EXTENDING FROM
WRN TN SWWD INTO FAR ERN TX...PER LATEST WATER VAPOR IMAGERY.
COMBINATION OF LARGE SCALE ASCENT ASSOCIATED WITH APPROACHING
SHORTWAVE TROUGH...MODERATELY AMOUNTS OF INSTABILITY/SHEAR...AND
ESTABLISHED COLD POOL ALONG LEADING EDGE OF TSTM LINE ALL SUGGEST
A CONTINUED THREAT OF WIND/HAIL E OF CURRENT WW/S.
THUS...WW/S 041 AND 042 MAY NEED TO BE REPLACED IN THE NEXT
COUPLE OF HOURS WITH A NEW SEVERE TSTM WATCH FARTHER TO THE E.
0 likes
-
Rob-TheStormChaser
Hail Reports
Time Size Location County State Lat Lon Comments
1245 88 5 SW MAGEE SIMPSON MS 3180 8980 REPORTED BY PUBLIC (JAN)
1303 75 3 S ELLISVILLE JONES MS 3155 8920 REPORTED BY JONES COUNTY EMA. (JAN)
1305 75 BOSTON THOMAS GA 3078 8378 TIME ESTIMATED. RELAYED BY LAW ENFORCEMENT OFFICIAL. (TLH)
1315 75 VARNER LINCOLN AR 3403 9161 REPORTED BY LAW ENFORCEMENT (LIT)
1320 100 ARKANSAS COUNTY ARKANSAS AR 3425 9136 REPORTED BY LAW ENFORCEMENT (LIT)
1405 75 NEDERLAND JEFFERSON TX 2998 9398 (LCH)
1408 100 BEULAH BOLIVAR MS 3380 9100 REPORTED BY BOLIVAR COUNTY SHERIFFS OFFICE. (JAN)
1432 100 DREW SUNFLOWER MS 3381 9053 QUARTER SIZE HAIL REPORTED BY SUNFLOWER CO CIVIL DEFENSE. ALSO 40 MPH WIND GUSTS. (JAN)
1515 75 GREENWOOD LEFLORE MS 3355 9026 PENNY SIZE HAIL REPORTED ON HIGHWAY 70 JUST NORTH OF GREENWOOD. REPORTED BY LEFLORE EMA. (JAN)
1532 88 3 S SUMRALL LAMAR MS 3136 8955 NICKEL SIZE HAIL REPORTED BY LAMAR COUNTY EOC. (JAN)
1535 75 BRIDGE CITY ORANGE TX 3001 9385 PUBLIC REPORTED DIME SIZE HAIL IN BRIDGE CITY (LCH)
1545 75 MADISON MADISON MS 3246 9010 REPORTED BY POLICE. (JAN)
1548 75 GRAND LAKE CAMERON LA 3006 9328 DIME SIZE HAIL AROUND POONTOON BRIDGE (LCH)
1605 88 BELLEFONTAINE WEBSTER MS 3364 8931 REPORTED BY WEBSTER COUNTY EMA. (JAN)
1645 75 UTICA HINDS MS 3211 9061 DIME SIZED HAIL REPORTED BETWEEN UTICA AND LEARNED. REPORTED BY HINDS EMA. (JAN)
1648 100 15 N GRAND CHENIER CAMERON LA 3001 9298 PARK OFFICIAL REPORTED QUARTER SIZE HAIL AT LACASSINE NATIONAL WILDLIFE REFUGE (LCH)
1715 88 4 SW BROOKHAVEN LINCOLN MS 3153 9050 REPORTED BY LINCOLN COUNTY EMA. (JAN)
1716 88 RICHLAND RANKIN MS 3233 9000 REPORTED BY HAMM RADIO OPERATORS. (JAN)
1732 75 FLORENCE RANKIN MS 3215 9013 REPORTED BY HAMM RADIO OPERATOR. (JAN)
Wind Reports
Time Speed Location County State Lat Lon Comments
1216 60 GLACIER COUNTY GLACIER MT 4865 11308 (TFX)
1255 UNK NOBLE LAKE JEFFERSON AR 3416 9186 LARGE TREE LIMBS DOWN. FEW SHEETS OF TIN BLOWN OFF A BUILDING. REPORTED BY STORM SPOTTER (LIT)
1325 UNK DELUCE ARKANSAS AR 3419 9125 TREES DOWN. REPORTED BY LAW ENFORCEMENT (LIT)
1430 UNK 5 E LAKELAND LANIER GA 3103 8298 SEVERAL LARGE TREES DOWN. TIME ESTIMATED. REPORTED BY LAW ENFORCEMENT OFFICIAL. (TLH)
1605 UNK BELLEFONTAINE WEBSTER MS 3364 8931 A FEW TREES DOWN. TREES BLOCKING ROADWAYS. REPORTED BY WEBSTER COUNTY EMA. (JAN)
1700 UNK 8 N ACKERMAN CHOCTAW MS 3344 8916 TREES DOWN ON HIGHWAY 15 NORTH OF TOWN. REPORTED BY CHOCTAW CD. (JAN)
1720 UNK COLUMBUS LOWNDES MS 3350 8843 2 TREES DOWN AND 1 POWER LINE DOWN. REPORTED BY LOWNDES 911. (JAN)
1722 UNK 14 W HAZLEHURST COPIAH MS 3186 9067 TREES DOWN ON HIGHWAY 28. REPORTED BY COPIAH SHERRIFFS OFFICE. (JAN)
1750 76 2 E EAST GLACIER PARK GLACIER MT 4841 11316 (TFX)
Time Size Location County State Lat Lon Comments
1245 88 5 SW MAGEE SIMPSON MS 3180 8980 REPORTED BY PUBLIC (JAN)
1303 75 3 S ELLISVILLE JONES MS 3155 8920 REPORTED BY JONES COUNTY EMA. (JAN)
1305 75 BOSTON THOMAS GA 3078 8378 TIME ESTIMATED. RELAYED BY LAW ENFORCEMENT OFFICIAL. (TLH)
1315 75 VARNER LINCOLN AR 3403 9161 REPORTED BY LAW ENFORCEMENT (LIT)
1320 100 ARKANSAS COUNTY ARKANSAS AR 3425 9136 REPORTED BY LAW ENFORCEMENT (LIT)
1405 75 NEDERLAND JEFFERSON TX 2998 9398 (LCH)
1408 100 BEULAH BOLIVAR MS 3380 9100 REPORTED BY BOLIVAR COUNTY SHERIFFS OFFICE. (JAN)
1432 100 DREW SUNFLOWER MS 3381 9053 QUARTER SIZE HAIL REPORTED BY SUNFLOWER CO CIVIL DEFENSE. ALSO 40 MPH WIND GUSTS. (JAN)
1515 75 GREENWOOD LEFLORE MS 3355 9026 PENNY SIZE HAIL REPORTED ON HIGHWAY 70 JUST NORTH OF GREENWOOD. REPORTED BY LEFLORE EMA. (JAN)
1532 88 3 S SUMRALL LAMAR MS 3136 8955 NICKEL SIZE HAIL REPORTED BY LAMAR COUNTY EOC. (JAN)
1535 75 BRIDGE CITY ORANGE TX 3001 9385 PUBLIC REPORTED DIME SIZE HAIL IN BRIDGE CITY (LCH)
1545 75 MADISON MADISON MS 3246 9010 REPORTED BY POLICE. (JAN)
1548 75 GRAND LAKE CAMERON LA 3006 9328 DIME SIZE HAIL AROUND POONTOON BRIDGE (LCH)
1605 88 BELLEFONTAINE WEBSTER MS 3364 8931 REPORTED BY WEBSTER COUNTY EMA. (JAN)
1645 75 UTICA HINDS MS 3211 9061 DIME SIZED HAIL REPORTED BETWEEN UTICA AND LEARNED. REPORTED BY HINDS EMA. (JAN)
1648 100 15 N GRAND CHENIER CAMERON LA 3001 9298 PARK OFFICIAL REPORTED QUARTER SIZE HAIL AT LACASSINE NATIONAL WILDLIFE REFUGE (LCH)
1715 88 4 SW BROOKHAVEN LINCOLN MS 3153 9050 REPORTED BY LINCOLN COUNTY EMA. (JAN)
1716 88 RICHLAND RANKIN MS 3233 9000 REPORTED BY HAMM RADIO OPERATORS. (JAN)
1732 75 FLORENCE RANKIN MS 3215 9013 REPORTED BY HAMM RADIO OPERATOR. (JAN)
Wind Reports
Time Speed Location County State Lat Lon Comments
1216 60 GLACIER COUNTY GLACIER MT 4865 11308 (TFX)
1255 UNK NOBLE LAKE JEFFERSON AR 3416 9186 LARGE TREE LIMBS DOWN. FEW SHEETS OF TIN BLOWN OFF A BUILDING. REPORTED BY STORM SPOTTER (LIT)
1325 UNK DELUCE ARKANSAS AR 3419 9125 TREES DOWN. REPORTED BY LAW ENFORCEMENT (LIT)
1430 UNK 5 E LAKELAND LANIER GA 3103 8298 SEVERAL LARGE TREES DOWN. TIME ESTIMATED. REPORTED BY LAW ENFORCEMENT OFFICIAL. (TLH)
1605 UNK BELLEFONTAINE WEBSTER MS 3364 8931 A FEW TREES DOWN. TREES BLOCKING ROADWAYS. REPORTED BY WEBSTER COUNTY EMA. (JAN)
1700 UNK 8 N ACKERMAN CHOCTAW MS 3344 8916 TREES DOWN ON HIGHWAY 15 NORTH OF TOWN. REPORTED BY CHOCTAW CD. (JAN)
1720 UNK COLUMBUS LOWNDES MS 3350 8843 2 TREES DOWN AND 1 POWER LINE DOWN. REPORTED BY LOWNDES 911. (JAN)
1722 UNK 14 W HAZLEHURST COPIAH MS 3186 9067 TREES DOWN ON HIGHWAY 28. REPORTED BY COPIAH SHERRIFFS OFFICE. (JAN)
1750 76 2 E EAST GLACIER PARK GLACIER MT 4841 11316 (TFX)
0 likes
Return to “USA & Caribbean Weather”
Who is online
Users browsing this forum: No registered users and 6 guests