Tornado Watch 83

Issued

Mar 28, 2007, 3:59 PM CDT (20:59 UTC)

Expired

Mar 28, 2007, 11:54 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Goodland radar (KGLD), 67 km from the middle of the area, began a volume at 20:59 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

80%

One or more EF2 to EF5 tornadoes

60%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

90%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 361Mar 28, 3:29 PM CDT
• Mesoscale Discussion 362Mar 28, 6:10 PM CDT
• Mesoscale Discussion 366Mar 28, 9:06 PM CDT
• Mesoscale Discussion 368Mar 28, 11:07 PM CDT

000
WWUS20 KWNS 282102
SEL3  
SPC WW 282102
KSZ000-NEZ000-290500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 83
NWS STORM PREDICTION CENTER NORMAN OK
400 PM CDT WED MAR 28 2007

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

       WESTERN KANSAS
       EXTREME SOUTHWEST NEBRASKA

EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 400 PM UNTIL MIDNIGHT CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF MCCOOK
NEBRASKA TO 5 MILES EAST SOUTHEAST OF LIBERAL KANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 80...WW 81...WW 82...

DISCUSSION...LOW-LEVEL MOISTURE /BOUNDARY LAYER DEWPOINTS OF 56-62
F/ CONTINUES TO SURGE NWD/NNWWD INTO WRN KS FROM OK...TO THE E OF A
CONFLUENCE BOUNDARY FROM W OF LBL TO NEAR GLD.  THE DEEPER MIXED
LAYER AND MUCH DRIER BOUNDARY LAYER IS LOCATED TO THE W ACROSS ERN
CO.  THE SURFACE MOISTURE GRADIENT MAY TEND TO CONSOLIDATE THROUGH
THE EVENING ACROSS EXTREME WRN KS...PROVIDING A FOCUS FOR STORM
INITIATION.  THE MOISTENING BOUNDARY LAYER AND TEMPERATURES IN THE
LOW-MID 70S WILL SUPPORT STRONG INSTABILITY /MLCAPE VALUES IN EXCESS
OF 2000 J/KG/.  AT THE SAME TIME...VERTICAL SHEAR WILL BECOME
INCREASINGLY FAVORABLE FOR SUPERCELLS INTO THIS EVENING.  GIVEN THAT
THE INITIAL DEVELOPMENT SHOULD BE DISCRETE SUPERCELLS ACROSS WRN
KS...WITH THE POTENTIAL FOR VERY LARGE HAIL AND A COUPLE OF STRONG
TORNADOES.  LATER THIS EVENING INTO TONIGHT...STORMS MAY GRADUALLY
MERGE INTO A LARGER N-S CONVECTIVE BAND WITH MORE OF A DAMAGING WIND
AND LARGE HAIL THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 21040.


...THOMPSON

Tornado Watches in Kansas, 2007Tornado Watches in Nebraska, 2007Every tornado watch in 2007

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.