Tornado Watch 235

Issued

May 5, 2007, 2:42 PM CDT (19:42 UTC)

Expired

May 5, 2007, 9:32 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

3 in

Strongest gust expected

70 kt

The Omaha radar (KOAX), 84 km from the middle of the area, began a volume at 19:45 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

90%

One or more EF2 to EF5 tornadoes

60%

Ten or more severe wind reports

90%

One or more gusts of 65 knots or more

60%

Ten or more severe hail reports

95%

One or more hailstones of 2 inches or more

70%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 707May 5, 2:32 PM CDT
• Mesoscale Discussion 711May 5, 6:16 PM CDT
• Mesoscale Discussion 715May 5, 8:18 PM CDT

000
WWUS20 KWNS 051944
SEL5  
SPC WW 051944
IAZ000-KSZ000-NEZ000-060300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 235
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT SAT MAY 5 2007

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

       PARTS OF SOUTHWEST IOWA
       LARGE PART OF NORTHEAST KANSAS
       MUCH OF EASTERN NEBRASKA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
1000 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF
NORFOLK NEBRASKA TO 40 MILES SOUTH OF MANHATTAN KANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 232...WW 233...WW 234...

DISCUSSION...SEVERE THUNDERSTORMS ARE INCREASING IN BOTH NUMBER AND
INTENSITY ACROSS CENTRAL NE/KS AS AIR MASS HAS BECOME VERY UNSTABLE.
 VERY FAVORABLE STRONG SHEAR PROFILES WILL SUPPORT TORNADIC
SUPERCELLS ACROSS THE WATCH AREA THRU THE EVENING. 
SHEAR/INSTABILITY WILL SUPPORT POTENTIAL OF STRONG/LONG TRACK
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 22040.


...HALES

Tornado Watches in Nebraska, 2007Tornado Watches in Kansas, 2007Tornado Watches in Iowa, 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.