Severe Thunderstorm Watch 21

Issued

Feb 21, 2014, 12:58 AM CST (06:58 UTC)

Expired

Feb 21, 2014, 8:00 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

65 kt

The Maxwell AFB radar (KMXX), 124 km from the middle of the area, began a volume at 07:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

10%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 133Feb 20, 9:56 PM CST
• Mesoscale Discussion 135Feb 20, 11:43 PM CST
• Mesoscale Discussion 138Feb 21, 3:33 AM CST

373 
WWUS20 KWNS 210658
SEL1  
SPC WW 210658
ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-211400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 21
NWS STORM PREDICTION CENTER NORMAN OK
100 AM CST FRI FEB 21 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  CENTRAL...EASTERN AND SOUTHERN ALABAMA
  WESTERN/CENTRAL PANHANDLE OF FLORIDA
  WESTERN AND NORTHERN GEORGIA
  EXTREME SOUTHEASTERN MISSISSIPPI
  COASTAL WATERS

* EFFECTIVE THIS FRIDAY MORNING FROM 100 AM UNTIL 800 AM CST.

* PRIMARY THREATS INCLUDE...
  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES WEST
SOUTHWEST OF PENSACOLA FLORIDA TO 45 MILES NORTHWEST OF ATLANTA
GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 15...TORNADO WATCH NUMBER 16. WATCH NUMBER
15 16 WILL NOT BE IN EFFECT AFTER 100 AM CST. CONTINUE...WW
17...WW 19...WW 20...

DISCUSSION...BANDS OF SVR TSTMS WILL CONTINUE TO OFFER DAMAGING-WIND
POTENTIAL FROM BOW/LEWP FORMATIONS...AS THEY MOVE INTO FAVORABLY
MOIST AND AT LEAST MRGLLY UNSTABLE AIR MASS ACROSS WW AREA.  TORNADO
THREAT STILL EXISTS BUT APPEARS MRGL AND GRADUALLY DIMINISHING
OVERNIGHT...GIVEN PRESENCE OF STRONGER LOW-LEVEL AND DEEP SHEAR
FARTHER N.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION
VECTOR 24035.


...EDWARDS

Severe Thunderstorm Watches in Georgia, 2014Severe Thunderstorm Watches in Alabama, 2014Severe Thunderstorm Watches in Florida, 2014Every severe thunderstorm watch in 2014

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.