Tornado Watch 52

Issued

Mar 9, 2009, 3:49 PM CDT (20:49 UTC)

Expired

Mar 9, 2009, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Norman radar (KTLX), 64 km from the middle of the area, began a volume at 20:47 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

60%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 217Mar 9, 2:13 PM CDT
• Mesoscale Discussion 218Mar 9, 5:42 PM CDT
• Mesoscale Discussion 219Mar 9, 6:11 PM CDT
• Mesoscale Discussion 221Mar 9, 8:01 PM CDT
• Mesoscale Discussion 222Mar 9, 9:25 PM CDT

101 
WWUS20 KWNS 092052
SEL2  
SPC WW 092052
KSZ000-OKZ000-100300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 52
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT MON MAR 9 2009

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

       SOUTHEAST KANSAS
       CENTRAL AND NORTHEAST OKLAHOMA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTH SOUTHWEST OF
FORT SILL OKLAHOMA TO 35 MILES NORTHWEST OF CHANUTE KANSAS.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

DISCUSSION...CU/TCU FIELD CONTINUES TO GROW ACROSS MUCH OF CENTRAL
OK...WHILE AIRMASS DESTABILIZES INTO SOUTHEAST KS.  LEADING EDGE OF
STRONGER FORCING IS MOVING THROUGH THE TX PANHANDLE AND WILL LIKELY
RESULT IN SCATTERED THUNDERSTORM INITIATION SOON OVER WESTERN OK. 
THESE STORMS WILL TRACK EASTWARD ACROSS WATCH AREA DURING THE LATE
AFTERNOON AND EVENING.  FAVORABLE LOW LEVEL SHEAR PROFILES WILL
PROMOTE SUPERCELL STRUCTURES WITH A RISK OF A FEW TORNADOES.

AVIATION...TORNADOES AND 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 25040.


...HART

Tornado Watches in Oklahoma, 2009Tornado Watches in Kansas, 2009Every tornado watch in 2009

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.