Alert archive / Oklahoma / Tornado Watches in 2008

Tornado Watch 3

January 7, 20087 counties in Arkansas; 6 counties in Missouri; 27 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Jan 7, 2008, 4:02 PM CST for 7 counties in Arkansas; 6 counties in Missouri; 27 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 7, 2008, 4:02 PM CST (22:02 UTC)
Expired
Jan 7, 2008, 8:56 PM CST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 40 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Christian County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Kay County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 7 km from the middle of the area, began a volume at 22:03 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
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%

Warnings issued inside it

35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jan 7, 4:11 PM CSTTornado WarningSGFMcDonald64 min
Jan 7, 4:36 PM CSTTornado WarningSGFBarry, Newton54 min
Jan 7, 4:40 PM CSTSevere Thunderstorm WarningTSADelaware47 min
Jan 7, 5:06 PM CSTSevere Thunderstorm WarningTSABenton35 min
Jan 7, 5:09 PM CSTTornado WarningSGFChristian, Lawrence, Stone50 min
Jan 7, 5:18 PM CSTTornado WarningSGFMcDonald72 min
Jan 7, 5:35 PM CSTSevere Thunderstorm WarningTSALeFlore43 min
Jan 7, 5:47 PM CSTTornado WarningSGFBarry73 min
Jan 7, 6:12 PM CSTTornado WarningSGFMcDonald38 min
Jan 7, 6:29 PM CSTTornado WarningSGFChristian, Lawrence, Stone76 min
Jan 7, 6:31 PM CSTSevere Thunderstorm WarningTSAMcIntosh, Muskogee59 min
Jan 7, 6:33 PM CSTTornado WarningSGFBarry, Newton41 min
Jan 7, 6:38 PM CSTSevere Thunderstorm WarningTSAAdair, Cherokee67 min
Jan 7, 6:57 PM CSTTornado WarningTSACherokee33 min
Jan 7, 7:03 PM CSTTornado WarningTSACherokee, Muskogee42 min
Jan 7, 7:06 PM CSTTornado WarningTSAAdair, Delaware24 min
Jan 7, 7:11 PM CSTTornado WarningTSAMcIntosh, Muskogee34 min
Jan 7, 7:14 PM CSTTornado WarningTSABenton31 min
Jan 7, 7:18 PM CSTTornado WarningSGFChristian, Lawrence57 min
Jan 7, 7:22 PM CSTTornado WarningTSAMcIntosh, Muskogee41 min
Jan 7, 7:28 PM CSTTornado WarningTSAAdair, Delaware32 min
Jan 7, 7:35 PM CSTTornado WarningTSAAdair, Cherokee55 min
Jan 7, 7:40 PM CSTTornado WarningTSACherokee, Muskogee50 min
Jan 7, 7:42 PM CSTTornado WarningTSABenton48 min
Jan 7, 7:44 PM CSTFlash Flood WarningSGFBarry, Christian, Greene, Lawrence, McDonald, Newton and 1 more6 hr
Jan 7, 7:58 PM CSTTornado WarningTSACherokee31 min
Jan 7, 7:59 PM CSTSevere Thunderstorm WarningTSACherokee, Delaware, Mayes, Muskogee, Wagoner61 min
Jan 7, 8:01 PM CSTTornado WarningSGFMcDonald59 min
Jan 7, 8:08 PM CSTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okfuskee, Okmulgee, Rogers, Tulsa and 1 more67 min
Jan 7, 8:09 PM CSTTornado WarningTSABenton, Washington66 min
Jan 7, 8:17 PM CSTTornado WarningTSACherokee, Muskogee, Wagoner43 min
Jan 7, 8:21 PM CSTTornado WarningSGFBarry, McDonald54 min
Jan 7, 8:24 PM CSTFlash Flood WarningTSABenton, Washington4 hr
Jan 7, 8:49 PM CSTTornado WarningSGFBarry, Stone71 min
Jan 7, 8:54 PM CSTTornado WarningTSABenton66 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 10.0 hours before the alert went out and 171 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lamont, OK at 12:00Z on 2008-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lamont, OK at 12:00Z on 2008-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1621 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

847 
WWUS20 KWNS 072202
SEL3  
SPC WW 072202
ARZ000-MOZ000-OKZ000-080400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 3
NWS STORM PREDICTION CENTER NORMAN OK
405 PM CST MON JAN 7 2008

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

       NORTHWEST ARKANSAS
       PARTS OF SOUTHWEST MISSOURI
       PARTS OF NORTHEAST AND NORTH CENTRAL OKLAHOMA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
1000 PM CST.

TORNADOES...HAIL TO 2.5 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 110 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF GROVE
OKLAHOMA TO 40 MILES WEST OF POTEAU OKLAHOMA.  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 1...WW 2...

DISCUSSION...WITH APPROACH OF VIGOROUS TROUGH NOW OVER NM...LOW
LEVEL FLOW WILL BACK AND ENHANCE SHEAR AND SUPERCELL POTENTIAL THIS
EVENING ACROSS THE WATCH AREA.  CURRENTLY THUNDERSTORMS DEVELOPING
ERN OK IN AXIS OF FAVORABLE DEEP LAYER SHEAR AND INSTABILITY WITH
POTENTIAL OF SUPERCELL AND TORNADOES IN THE NEAR TERM.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24040.


...HALES

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 7, 12:25 PM CSTMesoscale DiscussionSPCBenton2 hr
Jan 7, 7:26 AM CSTMesoscale DiscussionSPCHarrison, Mercer, Putnam2 hr
Jan 7, 1:47 PM CSTMesoscale DiscussionSPCClark, Lewis, Lincoln, Marion, Monroe, Pike and 2 more58 min
Jan 7, 1:52 PM CSTTornado WatchSPCAdair, Audrain, Barton, Bates, Benton, Boone and 48 more146 days
Jan 7, 4:34 PM CSTMesoscale DiscussionSPCAdair, Audrain, Barton, Bates, Benton, Boone and 50 more86 min

Nearby

Tornado Watches in Oklahoma, 2008Tornado Watches in Arkansas, 2008Tornado Watches in Missouri, 2008Every tornado watch in 2008

Sources

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.