NEW:Advisories...NHC will issue as long as the system is TC

[spinfan4eva]

From the Hurricane preparedness week website, they will now continue to issue advisories until the storm is no longer a tropical cyclone. http://www.nhc.noaa.gov/HAW2/pdf/Summary.pdf (Adobe required)

Code: Select all

Atlantic Tropical
Cyclone Forecast/
Advisory
Issued for every tropical cyclone in the Atlantic Basin.
Contains forecast through 72 hours for as long as the system
remains a tropical cyclone.

Forecast/Advisories on subtropical cyclones will use
the same WMO/AFOS headers with the actual
advisory labelled SUBTROPICAL. Special
Forecast/Advisories can be issued at intermediate
times as conditions warrant. These will use the same
header as the scheduled forecast/advisory.

This is great news.... Now we can continue to get updates from the NHC for tropical cyclones instead of th HPC who specialize in Flash flooding verses high winds and tornadoes. Here is an instance where the NHC stopped issueing advisories while the system was still a moderate tropical storm and still affecting land areas.

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ZCZC MIATCPAT4 ALL
TTAA00 KNHC DDHHMM
BULLETIN
TROPICAL STORM CLAUDETTE ADVISORY NUMBER  30
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
10 PM CDT TUE JUL 15 2003
 
...CLAUDETTE WEAKENING AS IT MOVES INLAND...COASTAL WARNINGS
DISCONTINUED...

AT 10 PM CDT...0300 UTC...ALL COASTAL WARNINGS ARE DISCONTINUED.
HOWEVER...A FEW WIND GUSTS IN EXCESS OF TROPICAL STORM FORCE ARE
STILL POSSIBLE IN RAINBANDS OVER THE GULF OF MEXICO.
 
AT 10 PM CDT...0300Z...THE CENTER OF TROPICAL STORM CLAUDETTE WAS
LOCATED NEAR LATITUDE 28.5 NORTH... LONGITUDE 98.9 WEST OR ABOUT 70
MILES SOUTH-SOUTHWEST OF SAN ANTONIO TEXAS.
 
CLAUDETTE IS MOVING TOWARD THE WEST NEAR 14 MPH.  A WEST OR
WEST-NORTHWEST MOTION IS EXPECTED OVER THE NEXT 24 HOURS. 
 
MAXIMUM SUSTAINED WINDS ARE NEAR  50 MPH...WITH HIGHER
GUSTS.  CLAUDETTE IS EXPECTED TO WEAKEN TO A TROPICAL DEPRESSION
WEDNESDAY MORNING.
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO  60 MILES
... 95 KM FROM THE CENTER.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS  996 MB...29.41 INCHES.
 
STORM SURGE FLOODING...SWELLS...AND BATTERING WAVES ALONG THE TEXAS
COAST ARE SUBSIDING.
 
STORM TOTAL RAINFALL OF 5 TO 8 INCHES IS POSSIBLE IN ASSOCIATION
WITH CLAUDETTE.
 
ISOLATED TORNADOES ARE POSSIBLE IN PORTIONS OF SOUTH-CENTRAL TEXAS
TONIGHT.

ONE FATALITY HAS BEEN REPORTED IN ASSOCIATION WITH CLAUDETTE...A
THIRTEEN-YEAR-OLD WAS KILLED BY A FALLING TREE IN JOURDANTON TEXAS
IN ATASCOSA COUNTY.

REPEATING THE 10 PM CDT POSITION...28.5 N... 98.9 W.  MOVEMENT
TOWARD...WEST NEAR 14 MPH.  MAXIMUM SUSTAINED
WINDS... 50 MPH.  MINIMUM CENTRAL PRESSURE... 996 MB.
 
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR
PRODUCTS ISSUED BY YOUR LOCAL WEATHER OFFICE.
 
THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM.  FUTURE INFORMATION ON CLAUDETTE CAN BE FOUND
IN PUBLIC ADVISORIES ISSUED BY THE HYDROMETEOROLOGICAL PREDICTION
CENTER...UNDER AWIPS HEADER TCPAT4 AND WMO HEADER WTNT34
KWNH...BEGINNING AT 4 AM CDT.
 
FORECASTER FRANKLIN


[MWatkins]

Doesnt look like it's covered here but my guess is the HPC will go ahead and take responsibility from the NHC once a system gets inland, just like now, and will issue the advosiries, but they will come in under the same TC headers the NHC uses so people don't have to look in 2 different places.

Either way, that's a good thing. Just because the area of responsibility differes few people know where to get the HPC stuff. May as well communicate it in the same place people had been reading from 50 advisories before the transition.

MW

[spinfan4eva]

Doesnt look like it's covered here but my guess is the HPC will go ahead and take responsibility from the NHC once a system gets inland, just like now, and will issue the advosiries, but they will come in under the same TC headers the NHC uses so people don't have to look in 2 different places.

Either way, that's a good thing. Just because the area of responsibility differes few people know where to get the HPC stuff. May as well communicate it in the same place people had been reading from 50 advisories before the transition.

MW

When the NHC stops issuing advisories, many people may see it as the storm is no longer a threat. Yes the storm is still a threat well inland but now theres no more advisories coming out from the NHC and now are coming from some HPC place, so its just a normal rain event. When one goes to the NHC homepage and sees that advisories are now linked to a totally different agency, they see it as storm is over though 50mph winds, tornadoes, and flooding may still be a threat.

Here is an additional problem with NHC not issuing advisories, hurricane archives and web pages as well as tracking software...

Example Hurricane Claudette
REPEATING THE 10 PM CDT POSITION...28.5 N... 98.9 W. MOVEMENT
TOWARD...WEST NEAR 14 MPH. MAXIMUM SUSTAINED
WINDS... 50 MPH. MINIMUM CENTRAL PRESSURE... 996 MB.

THIS IS THE LAST PUBLIC ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON THIS SYSTEM. FUTURE INFORMATION ON CLAUDETTE CAN BE FOUND
IN PUBLIC ADVISORIES ISSUED BY THE HYDROMETEOROLOGICAL PREDICTION
CENTER...UNDER AWIPS HEADER TCPAT4 AND WMO HEADER WTNT34
KWNH...BEGINNING AT 4 AM CDT.


Last entry from Unisys
30 28.50 -98.90 07/16/03Z 45 996 TROPICAL STORM