Tornado Watch 876

Issued

Nov 27, 2005, 2:20 PM CST (20:20 UTC)

Expired

Nov 27, 2005, 10:00 PM CST

In force

8 hr

Issued by

the Storm Prediction Center

The Western Arkansas radar (KSRX), 77 km from the middle of the area, began a volume at 20:23 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 2474Nov 27, 1:48 PM CST
• Mesoscale Discussion 2478Nov 27, 4:39 PM CST
• Mesoscale Discussion 2479Nov 27, 5:07 PM CST

000 
WWUS20 KWNS 272020
SEL6  
SPC WW 272020
ARZ000-LAZ000-OKZ000-TXZ000-280400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 876
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CST SUN NOV 27 2005

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

       WESTERN AND CENTRAL ARKANSAS
       NORTHWEST LOUISIANA
       EXTREME EASTERN OKLAHOMA
       NORTHEAST TEXAS

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 220 PM UNTIL 1000
PM CST.

TORNADOES...HAIL TO 1.5 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 20 MILES NORTHWEST OF HARRISON
ARKANSAS TO 35 MILES SOUTH SOUTHWEST OF SHREVEPORT LOUISIANA.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).

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 875...

DISCUSSION...THUNDERSTORMS ARE DEVELOPING ALONG A PRE-FRONTAL
CONFLUENCE BAND FROM NE TX INTO EXTREME SE OK/SW AR.  LOW-LEVEL
WARMING AND MOISTENING SHOULD RESULT IN CONTINUED DESTABILIZATION
ALONG AND E/NE OF THIS BAND...WITH THE ENVIRONMENT BECOMING MORE
FAVORABLE FOR SEVERE STORMS THROUGH THE AFTERNOON/EVENING.  VERY
STRONG VERTICAL SHEAR PROFILES WILL SUPPORT BOTH SUPERCELLS AND
EMBEDDED BOWING SEGMENTS CAPABLE OF PRODUCING DAMAGING WINDS AND
LARGE HAIL.  GIVEN THE DEGREE OF LOW-LEVEL SHEAR AND A FEW DISCRETE
SUPERCELLS WITHIN A BROADER BROKEN BAND...A STRONG TORNADO OR TWO
COULD OCCUR THIS EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 23050.


...THOMPSON

362,0915 315,0924 315,0952 362,0945

Tornado Watches in Arkansas, 2005Tornado Watches in Texas, 2005Tornado Watches in Louisiana, 2005Every tornado watch in 2005

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.