FIRST TORNADO WATCH OF THE DAY

[WXBUFFJIM]

THIS IS NOT A PDS TORNADO WATCH, BUT PLEASE TREAT IT AS A PDS BECAUSE TORNADOES ARE DANGROUS AND DEADLY AND CANNOT BE TAKEN LIGHTLY, ESPECIALLY TODAY!!! MORE WATCHES WILL BE NEEDED FURTHER SOUTH LATER TODAY AND THOSE WILL LIKELY BE PDS WATCHES!!!



URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 321
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT SAT MAY 29 2004

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

NORTHWEST IOWA
SOUTHWEST MINNESOTA
NORTHEAST NEBRASKA
EASTERN SOUTH DAKOTA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 205 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 65 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 135 STATUTE MILES EAST AND
WEST OF A LINE FROM 70 MILES NORTH OF WATERTOWN SOUTH DAKOTA TO 20
MILES SOUTHWEST OF SIOUX CITY IOWA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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...THUNDERSTORMS EXPECTED TO FORM DURING THE NEXT 1-2
HOURS INVOF WARM FRONT/INVERTED TROUGH INTERSECTION IN NE SD.
ACTIVITY SHOULD ALSO DEVELOP SWD ALONG THOSE BOUNDARIES AS SURFACE
HEATING...CONTINUED BOUNDARY LAYER MOISTURE INFLOW AND APPROACH OF
KS UPPER LEVEL IMPULSE FURTHER DESTABILIZE REGION. AMPLE CAPE AND
SHEAR /PER 18Z ABR RAOB/ SHOULD BE PRESENT SUPPORT SUPERCELLS WITH
HAIL. TORNADO THREAT SHOULD BE GREATEST IN AREA OF BACKED LOW LEVEL
FLOW NEAR WARM FRONT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 55 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 22025.


...CORFIDI

[simplykristi]

I just saw that over on the NOAA website. One of my brothers and his family are headed right now to Ames IA for a high school graduation.

Kristi

[WXBUFFJIM]

Hopefully it's a safe one there with no severe weather during that time. But Ames, IA is definitely in a threat the deeper we go into the afternoon.

Jim

[USAwx1]

THIS IS NOT A PDS TORNADO WATCH, BUT PLEASE TREAT IT AS A PDS BECAUSE TORNADOES ARE DANGEROUS AND DEADLY AND CANNOT BE TAKEN LIGHTLY, ESPECIALLY TODAY!!! MORE WATCHES WILL BE NEEDED FURTHER SOUTH LATER TODAY AND THOSE WILL LIKELY BE PDS WATCHES!!!

YES....well said! Just because this is not a PDS tornado watch, DOES NOT MEAN that:

A. Strong tornadoes are out of the question,

and ....

B. ALL TORNADOES AND SEVERE THUNDERSTORMS ARE DANGEROUS, so please, heed the warnings issued by your local NWS field offices.

#########

428
WWUS30 KWNS 291903
SAW1
SPC AWW 291905
WW 321 TORNADO IA MN NE SD 291905Z - 300300Z
AXIS..135 STATUTE MILES EAST AND WEST OF LINE..
70N ATY/WATERTOWN SD/ - 20SW SUX/SIOUX CITY IA/
..AVIATION COORDS.. 115NM E/W /51SSW FAR - 74NNW OVR/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..55 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 22025.

[simplykristi]

Any severe thunderstorm is capable of producing tornadoes.

Kristi

[WXBUFFJIM]

Oh yes, most definitely!!!

Jim

[USAwx1]

Any severe thunderstorm is capable of producing tornadoes.

Kristi

That's also VERY true, Kristi. By the way, since the primary severe threat in and around the KC metro area should occur close to dark, persons will want to pay extra attention to convective trends, and even if a warning is NOT issued for a particular cell in a particular county, take action anyway. Just in case. As tornadoes are MUCH harder to spot after dark and Severe thunderstorms (upright convection) can develop in as little as 10 Min.

[simplykristi]

We take warnings seriously around here. We saw a a funnel cloud (never confirmed tho) come thru our neighborhood almost three years ago.

Kristi