Severe Thunderstorm Watch 112

Issued

Mar 28, 2012, 2:06 PM EDT (18:06 UTC)

Expired

Mar 28, 2012, 9:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Jackson,KY radar (KJKL), 74 km from the middle of the area, began a volume at 18:08 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

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 371Mar 28, 10:23 AM EDT
• Mesoscale Discussion 372Mar 28, 12:43 PM EDT
• Mesoscale Discussion 374Mar 28, 4:37 PM EDT

128 
WWUS20 KWNS 281810
SEL2  
SPC WW 281810
INZ000-KYZ000-OHZ000-VAZ000-WVZ000-290100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 112
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT WED MAR 28 2012

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

       EXTREME SOUTHERN INDIANA
       CENTRAL AND EASTERN KENTUCKY
       EXTREME SOUTHERN OHIO
       WESTERN VIRGINIA
       WEST VIRGINIA

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
900 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH
NORTHWEST OF BOWLING GREEN KENTUCKY TO 35 MILES NORTH NORTHEAST
OF STAUNTON VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

DISCUSSION...STORMS ARE EXPECTED TO CONTINUE DEVELOPING AND
INTENSIFY THIS AFTERNOON IN A PRE-FRONTAL CONVECTIVE BAND OVER WV
INTO SRN OH...WITH ADDITIONAL WWD DEVELOPMENT INTO SRN INDIANA WHERE
A COLD FRONT IS MOVING SEWD INTO A LOW LEVEL INSTABILITY AXIS. 
CONVECTION HAS PRIMARILY BEEN ELEVATED INTO THE EARLY
AFTERNOON...BUT CONTINUED HEATING AND DEVELOPMENT OF A WELL-MIXED
BOUNDARY LAYER WILL RESULT IN STORMS BECOMING SURFACE-BASED WITH AN
INCREASING THREAT FOR SEVERE STORMS.  VAD PROFILES SHOW STRONG WINDS
ABOVE THE GROUND IN THE LOWEST 2-3 KM WHICH WILL ENHANCE WIND DAMAGE
POTENTIAL...AND STEEP LAPSE RATES WILL ALSO PROMOTE LARGE HAIL WITH
STRONGER CELLS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 28045.


...WEISS

Severe Thunderstorm Watches in Kentucky, 2012Severe Thunderstorm Watches in West Virginia, 2012Severe Thunderstorm Watches in Virginia, 2012Every severe thunderstorm watch in 2012

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.