Tornado Watch 293

Issued

May 10, 2008, 11:29 AM CDT (16:29 UTC)

Expired

May 10, 2008, 8:29 PM CDT

In force

9 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Springfield radar (KSGF), 139 km from the middle of the area, began a volume at 16:31 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

50%

One or more EF2 to EF5 tornadoes

40%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

50%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

50%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 855May 10, 7:36 AM CDT
• Mesoscale Discussion 856May 10, 9:40 AM CDT
• Mesoscale Discussion 857May 10, 10:55 AM CDT
• Mesoscale Discussion 859May 10, 12:34 PM CDT
• Mesoscale Discussion 860May 10, 12:47 PM CDT
• Mesoscale Discussion 862May 10, 2:23 PM CDT
• Mesoscale Discussion 867May 10, 5:13 PM CDT

000
WWUS20 KWNS 101632
SEL3  
SPC WW 101632
ARZ000-KSZ000-MOZ000-OKZ000-110000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 293
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM CDT SAT MAY 10 2008

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

       NORTHWEST ARKANSAS
       SOUTHEAST KANSAS
       SOUTHWEST MISSOURI
       NORTHEAST OKLAHOMA

EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1130 AM UNTIL
700 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 110 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF
BARTLESVILLE OKLAHOMA TO 50 MILES NORTHEAST OF HARRISON ARKANSAS.
 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 292...

DISCUSSION...NUMEROUS ELEVATED STORMS WILL OVERSPREAD SOME OF THE
WATCH AREA THROUGH EARLY AFTERNOON WITHIN INTENSIFYING LOW LEVEL
WARM ADVECTION REGIME AHEAD OF AMPLIFYING LARGE SCALE PATTERN. MOST
GUIDANCE SUPPORT RAPID NEAR-SURFACE-BASED DESTABILIZATION IN THE
WAKE OF THIS INITIAL ROUND OF ELEVATED CONVECTION AND ADDITIONAL
STORMS ARE ILKLEY TO FORM NEAR THE SURFACE LOW AND WARM FRONT BY
MID-LATE AFTERNOON. DEEP-LAYER SHEAR...ALREADY SUFFICIENT FOR
UPDRAFT ROTATION AND HAIL PRODUCTION...WILL STRENGTHEN FURTHER
COINCIDENT WITH THE INCREASE IN LARGE SCALE ASCENT.
FURTHERMORE...STRONG LOW LEVEL SRH NEAR THE LOW AND ALONG THE WARM
FRONT WILL BECOME INCREASINGLY FAVORABLE FOR LOW LEVEL AND
PERSISTENT STORM ROTATION AND POSSIBLE TORNADOES...ESPECIALLY LATER
THIS AFTERNOON.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 26030.


...CARBIN

Tornado Watches in Missouri, 2008Tornado Watches in Kansas, 2008Tornado Watches in Arkansas, 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.