Why no tornado watch for Arlene??!!

[Anonymous]

Arlene just made landfall and landfalling tropical systems always preduce numerous tornadoes but they let the last tornado watch expire after issuing this MD... Maybe the SPC just forgot to issue the new watch

Radar with several bands of strong storms is here... http://www.intellicast.com/Local/USLoca ... odnav=none

MESOSCALE DISCUSSION 1296
NWS STORM PREDICTION CENTER NORMAN OK
0223 PM CDT SAT JUN 11 2005

AREAS AFFECTED...NRN FL THROUGH PARTS OF SRN AL AND SRN GA

CONCERNING...TORNADO WATCH 458...

VALID 111923Z - 112100Z

TORNADO WATCH 458 WILL BE REPLACED BY ANOTHER TORNADO WATCH BEFORE
ITS EXPIRATION TIME OF 21Z. THE NEW TORNADO WATCH WILL EXTEND FROM
NRN FL FARTHER NWD INTO SRN AL AND GA.

TROPICAL STORM ARLENE IS NEARING LANDFALL NEAR PENSACOLA FL. THE
CIRCULATION EXTENDS OVER A BROAD AREA WITH OUTER RAINBANDS AS FAR E
AS THE FL PENINSULA. LATEST VISIBLE IMAGERY SHOWS CLEARING BETWEEN
THE RAINBANDS WHICH IS ALLOWING FOR SOME DESTABILIZATION. PRIMARY
TORNADO THREAT WILL CONTINUE WITH SUPERCELLS EMBEDDED IN RAINBANDS
TO THE E AND N OF THE CIRCULATION CENTER WHERE LARGE LOW LEVEL
HODOGRAPHS EXIST FROM NRN FL...THE FL PANHANDLE INTO SRN GA AND AL.

..DIAL.. 06/11/2005

[Brent]

The tornado threat has obviously diminished greatly. If they think there's a threat, they'll issue another one.

[senorpepr]

Yes, it appears that the tornado threat has significantly lowered. They didn't forget...

[jlauderdal]

Arlene just made landfall and landfalling tropical systems always preduce numerous tornadoes but they let the last tornado watch expire after issuing this MD... Maybe the SPC just forgot to issue the new watch

Radar with several bands of strong storms is here... http://www.intellicast.com/Local/USLoca ... odnav=none

MESOSCALE DISCUSSION 1296
NWS STORM PREDICTION CENTER NORMAN OK
0223 PM CDT SAT JUN 11 2005

AREAS AFFECTED...NRN FL THROUGH PARTS OF SRN AL AND SRN GA

CONCERNING...TORNADO WATCH 458...

VALID 111923Z - 112100Z

TORNADO WATCH 458 WILL BE REPLACED BY ANOTHER TORNADO WATCH BEFORE
ITS EXPIRATION TIME OF 21Z. THE NEW TORNADO WATCH WILL EXTEND FROM
NRN FL FARTHER NWD INTO SRN AL AND GA.

TROPICAL STORM ARLENE IS NEARING LANDFALL NEAR PENSACOLA FL. THE
CIRCULATION EXTENDS OVER A BROAD AREA WITH OUTER RAINBANDS AS FAR E
AS THE FL PENINSULA. LATEST VISIBLE IMAGERY SHOWS CLEARING BETWEEN
THE RAINBANDS WHICH IS ALLOWING FOR SOME DESTABILIZATION. PRIMARY
TORNADO THREAT WILL CONTINUE WITH SUPERCELLS EMBEDDED IN RAINBANDS
TO THE E AND N OF THE CIRCULATION CENTER WHERE LARGE LOW LEVEL
HODOGRAPHS EXIST FROM NRN FL...THE FL PANHANDLE INTO SRN GA AND AL.

..DIAL.. 06/11/2005

just because its a landfalling system doesnt mean that a tornado watch is mandatory...we had one here yesterday though.

[Brent]

From NWS Birmingham at 3:58pm CDT:

CURRENT RADAR DATA SHOWS STRENGTHENING CONVECTION
UPSTREAM WHICH WILL QUICKLY MOVE ACROSS CENTRAL ALABAMA. TORNADO
THREAT WILL BE AT THE THE MAXIMUM FOR THE EVENT WITH THESE
STORMS. HOWEVER...NO SIGNIFICANT THREAT IS EXPECTED AND NOT
EXPECTING A WATCH TO BE ISSUED.

[Anonymous]

Well, why did the SPC intend on and say they would issue a replacement watch and then not do so---either arlene weakenned quicker than expected or they think the local NWSs and Public common sense in a tropical system is good enough that they dont need to issue a watch... And ALL and EVERY tropical cyclone that comes ashore produces tornadoes --usually numerous-- as is always stated in any NHC advisory

[weatherluvr]

Well, why did the SPC intend on and say they would issue a replacement watch and then not do so---either arlene weakenned quicker than expected or they think the local NWSs and Public common sense in a tropical system is good enough that they dont need to issue a watch... And ALL and EVERY tropical cyclone that comes ashore produces tornadoes --usually numerous-- as is always stated in any NHC advisory

At landfall, there was relatively little convection due to all the dry air entrained into the system. As it moves further inland, some baroclinic forces may enhance more thunderstorm activity, and perhaps some tornadoes.

[Brent]

Well, why did the SPC intend on and say they would issue a replacement watch and then not do so---either arlene weakenned quicker than expected or they think the local NWSs and Public common sense in a tropical system is good enough that they dont need to issue a watch... And ALL and EVERY tropical cyclone that comes ashore produces tornadoes --usually numerous-- as is always stated in any NHC advisory

Something obviously changed... the squalls weren't THAT impressive in the favored right-front quadrant.

[gatorcane]

The answer is simple. There's no Tornado watch because Arlene was a very weak system before landfall and it is currently being invaded by dry air on all sides...you guys in Alabama get more action from summertime popcorn storms than Arlene. Arlene actually impacted the FL Keys more than where it actually hit. Conditions were more favorable farther south in the Tropics.

[yzerfan]

According to local reports, doppler radar was indicating some tornado activity on Eglin AFB land near SR 87.