Tornado Watch 48

Issued

Mar 8, 2009, 6:32 AM CDT (11:32 UTC)

Expired

Mar 8, 2009, 1:59 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Pleasant Hill radar (KEAX), 116 km from the middle of the area, began a volume at 11:35 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

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 205Mar 8, 5:56 AM CDT
• Mesoscale Discussion 206Mar 8, 9:26 AM CDT
• Mesoscale Discussion 208Mar 8, 11:35 AM CDT

837 
WWUS20 KWNS 081134
SEL8  
SPC WW 081134
ILZ000-KSZ000-MOZ000-081900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 48
NWS STORM PREDICTION CENTER NORMAN OK
635 AM CDT SUN MAR 8 2009

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

       WEST CENTRAL ILLINOIS
       FAR SOUTHEAST KANSAS
       SOUTHWEST THROUGH EAST CENTRAL MISSOURI

EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 635 AM UNTIL 200
PM CDT.

TORNADOES...HAIL TO 1.5 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 NORTH AND SOUTH OF A LINE FROM 55 MILES NORTH NORTHWEST OF
JOPLIN MISSOURI TO 25 MILES NORTH OF ALTON ILLINOIS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

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...TSTMS/POSSIBLE SUPERCELLS EXPECTED TO INCREASE DURING
THE NEXT SEVERAL HOURS OVER WW AREA AS HEIGHT FALLS/DEEP ASCENT
SHARPLY INCREASE ATOP WARM SECTOR OF DEVELOPING MO SFC LOW. 
STRENGTH OF LOW LVL SHEAR /50 KT/ AND EXISTING QUASI-DISCRETE STORM
STRUCTURES SUGGEST POTENTIAL FOR ISOLD TORNADOES IN ADDITION TO
BOWING SEGMENTS WITH HIGH WIND/HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 24045.


...CORFIDI

Tornado Watches in Missouri, 2009Tornado Watches in Illinois, 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.