Tornado Watch 150

Issued

Mar 31, 2008, 6:12 PM CDT (23:12 UTC)

Expired

Apr 1, 2008, 1:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Little Rock radar (KLZK), 111 km from the middle of the area, began a volume at 23:12 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 526Mar 31, 5:28 PM CDT
• Mesoscale Discussion 527Mar 31, 8:12 PM CDT
• Mesoscale Discussion 528Apr 1, 12:42 AM CDT

000
WWUS20 KWNS 312313
SEL0  
SPC WW 312313
ARZ000-MOZ000-OKZ000-TXZ000-010600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 150
NWS STORM PREDICTION CENTER NORMAN OK
615 PM CDT MON MAR 31 2008

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

       A LARGE PART OF SOUTHERN AND EASTERN ARKANSAS
       SMALL PART OF SOUTHEAST MISSOURI
       SMALL PART OF SOUTHEAST OKLAHOMA
       SMALL PART OF NORTHEAST TEXAS

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 615 PM UNTIL
100 AM 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 60 STATUTE
MILES EITHER SIDE OF A LINE FROM 55 MILES EAST NORTHEAST OF
POPLAR BLUFF MISSOURI TO 55 MILES WEST OF TEXARKANA ARKANSAS. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 147...WW 148...WW 149...

DISCUSSION...WELL DEVELOPED SEVERE SQUALL LINE FROM S CENTRAL MO
INTO SERN OK EXPECTED TO CONTINUE E/SE THRU THE EVENING.  WITH MDT
INSTABILITY...50-60KT OF DEEP LAYER SHEAR...SUPERCELLS AND BOW
STRUCTURES EXPECTED TO BE ASSOCIATED WITH THE SQUALL LINE. 
TORNADOES WILL BE POSSIBLE WITH ANY SUPERCELL AND LINEAR/BOW
SEGMENTS.

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
550. MEAN STORM MOTION VECTOR 24035.


...HALES

Tornado Watches in Arkansas, 2008Tornado Watches in Missouri, 2008Tornado Watches in Texas, 2008Every tornado watch in 2008

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.