Tornado Watch 709

Issued

Oct 17, 2007, 10:43 AM CDT (15:43 UTC)

Expired

Oct 17, 2007, 5:42 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Tulsa radar (KINX), 112 km from the middle of the area, began a volume at 15:47 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

40%

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

80%

• Mesoscale Discussion 2092Oct 17, 10:24 AM CDT
• Mesoscale Discussion 2094Oct 17, 1:20 PM CDT
• Mesoscale Discussion 2096Oct 17, 4:29 PM CDT

000
WWUS20 KWNS 171543
SEL9  
SPC WW 171543
ARZ000-KSZ000-MOZ000-OKZ000-172300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 709
NWS STORM PREDICTION CENTER NORMAN OK
1045 AM CDT WED OCT 17 2007

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

       NORTHWEST ARKANSAS
       SOUTHEAST KANSAS
       SOUTHWEST MISSOURI
       NORTHEAST OKLAHOMA

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1045 AM UNTIL
600 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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF CHANUTE
KANSAS TO 10 MILES SOUTH SOUTHEAST OF FORT SMITH ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU9).

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 708...

DISCUSSION...STRONG SYSTEM CONTINUES TO DEEPEN INTO PLAINS WITH
RAPID INCREASE IN MOISTURE/INSTABILITY NWD THROUGH WATCH AREA. 
SEVERE THUNDERSTORMS NRN OK EXPECTED TO CONTINUE DEVELOPING NEWD
WITH INCREASING POTENTIAL FOR TORNADIC SUPERCELLS DURING THE
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
500. MEAN STORM MOTION VECTOR 23040.


...HALES

Tornado Watches in Missouri, 2007Tornado Watches in Kansas, 2007Tornado Watches in Oklahoma, 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.