Tornado Watch 155

Issued

Apr 6, 2006, 1:26 PM CDT (18:26 UTC)

Expired

Apr 6, 2006, 9:51 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

The Norman radar (KTLX), 83 km from the middle of the area, began a volume at 18:27 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.

• Mesoscale Discussion 436Apr 6, 11:03 AM CDT
• Mesoscale Discussion 439Apr 6, 12:51 PM CDT
• Mesoscale Discussion 444Apr 6, 4:21 PM CDT
• Mesoscale Discussion 445Apr 6, 4:53 PM CDT
• Mesoscale Discussion 448Apr 6, 7:53 PM CDT
• Mesoscale Discussion 450Apr 6, 9:27 PM CDT

000 
WWUS20 KWNS 061828
SEL5  
SPC WW 061828
OKZ000-070200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 155
NWS STORM PREDICTION CENTER NORMAN OK
125 PM CDT THU APR 6 2006

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

       CENTRAL AND EASTERN OKLAHOMA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 125 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 3 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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF
BARTLESVILLE OKLAHOMA TO 20 MILES EAST SOUTHEAST OF DURANT
OKLAHOMA.  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 153...WW 154...

DISCUSSION...THE ATMOSPHERE CONTINUES TO DESTABILIZE AS OF
MIDDAY...AND TEMPERATURE/MOISTURE PROFILES WILL QUICKLY BECOME
FAVORABLE FOR STORM INITIATION ON THE PACIFIC COLD FRONT ACROSS
CENTRAL OK BY 19-20Z.  CROSS BOUNDARY FLOW/SHEAR SUGGESTS THAT
DISCRETE STORMS WILL BE FAVORED...THOUGH STRONG LOW-LEVEL FORCING
MAY ALSO ALLOW FOR A FEW LINE SEGMENTS.  LOW-LEVEL MOISTURE AND
VERTICAL SHEAR APPEAR TO BE SUFFICIENT FOR TORNADOES...AND PERHAPS A
STRONG TORNADO OR TWO IN ERN OK LATER THIS AFTERNOON...WHILE VERY
LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THE MOST INTENSE
STORMS.  GIVEN THE STRENGTH OF THE FLOW FIELDS AND THE STRONG DRY
SLOT SURGING ACROSS OK...THE SEVERE THREAT SHOULD SHIFT QUICKLY EWD
DURING THE AFTERNOON/EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23050.


...THOMPSON

Tornado Watches in Oklahoma, 2006Every tornado watch in 2006

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.