Alert archive / Arkansas / Tornado Watches in 2008

Tornado Watch 8

January 8, 20085 states

The Storm Prediction Center issued this tornado watch at Jan 8, 2008, 8:34 AM CST for 5 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 8, 2008, 8:34 AM CST (14:34 UTC)
Expired
Jan 8, 2008, 1:49 PM CST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt
All 88 counties

Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lafayette County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Miller County, AR, Mississippi County, AR, Monroe County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Marshall County, KY, McCracken County, KY, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Coahoma County, MS, DeSoto County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Carroll County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Haywood County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 116 km from the middle of the area, began a volume at 14:35 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
60%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jan 8, 8:43 AM CSTTornado WarningLZKFaulkner, Garland, Perry, Pulaski, Saline32 min
Jan 8, 9:15 AM CSTSevere Thunderstorm WarningLZKFaulkner, Perry, Pulaski30 min
Jan 8, 9:15 AM CSTSevere Thunderstorm WarningLZKCleburne, Stone, Van Buren45 min
Jan 8, 9:38 AM CSTSevere Thunderstorm WarningLZKClark, Dallas, Garland, Hot Spring, Pike52 min
Jan 8, 9:57 AM CSTSevere Thunderstorm WarningSHVMiller48 min
Jan 8, 10:00 AM CSTSevere Thunderstorm WarningLZKIndependence, Izard, Sharp, Stone45 min
Jan 8, 10:32 AM CSTTornado WarningMEGLawrence, Randolph43 min
Jan 8, 11:19 AM CSTSevere Thunderstorm WarningSHVColumbia41 min
Jan 8, 11:36 AM CSTSevere Thunderstorm WarningLZKJefferson, Lonoke, Prairie, Pulaski39 min
Jan 8, 12:13 PM CSTSevere Thunderstorm WarningLZKCalhoun, Cleveland, Dallas, Lincoln, Ouachita47 min
Jan 8, 12:15 PM CSTSevere Thunderstorm WarningLZKArkansas, Monroe, Prairie, Woodruff45 min
Jan 8, 12:51 PM CSTSevere Thunderstorm WarningMEGCross, Poinsett, St. Francis54 min
Jan 8, 12:59 PM CSTSevere Thunderstorm WarningSHVUnion46 min
Jan 8, 1:02 PM CSTSevere Thunderstorm WarningLZKArkansas, Monroe, Prairie28 min
Jan 8, 1:02 PM CSTTornado WarningMEGCross43 min
Jan 8, 1:12 PM CSTSevere Thunderstorm WarningLZKArkansas, Bradley, Calhoun, Cleveland, Desha, Drew and 3 more63 min
Jan 8, 1:15 PM CSTSevere Thunderstorm WarningMEGCrittenden, Lee, St. Francis60 min
Jan 8, 1:28 PM CSTTornado WarningMEGCrittenden, Mississippi, Poinsett47 min
Jan 8, 1:28 PM CSTTornado WarningMEGDunklin, Pemiscot47 min
Jan 8, 1:42 PM CSTSevere Thunderstorm WarningPAHMississippi, New Madrid, Scott, Stoddard33 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

Little Rock, AR (KLZK), launched 12:00Z, 2.6 hours before the alert went out and 132 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, Little Rock, AR at 12:00Z on 2008-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 181 joules per kilogram.LCLLFCEL10008507005003002001001 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, Little Rock, AR at 12:00Z on 2008-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 466 square meters per square second.19395878Sfc1 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
181 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
466 m²/s²
0-3 km storm-relative helicity
474 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.1

Open this sounding in Storm Lab

The text

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

149 
WWUS20 KWNS 081434
SEL8  
SPC WW 081434
ARZ000-KYZ000-MOZ000-MSZ000-TNZ000-082200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 8
NWS STORM PREDICTION CENTER NORMAN OK
835 AM CST TUE JAN 8 2008

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

       MUCH OF EASTERN AND SOUTHERN ARKANSAS
       PARTS OF WESTERN KENTUCKY
       PARTS OF SOUTHEAST MISSOURI
       PARTS OF NORTHERN MISSISSIPPI
       PARTS OF WESTERN TENNESSEE

EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 835 AM UNTIL
400 PM CST.

TORNADOES...HAIL TO 2.5 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES EAST NORTHEAST OF
POPLAR BLUFF MISSOURI TO 10 MILES SOUTHWEST OF EL DORADO
ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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.

DISCUSSION...VERY POTENT SHEAR PROFILES IN PLACE FOR TORNADIC
SUPERCELL DEVELOPMENT AS STRONG S/WV TROUGH MOVES TOWARD AREA FROM
SRN PLAINS.  CURRENT THUNDERSTORMS WESTERN AR EXPECTED TO INCREASE
IN NUMBER AND INTENSITY ALONG WITH POTENTIAL FOR TORNADOS THRU THE
AFTERNOON AS THEY DEVELOP EWD ACROSS MS RIVER VALLEY.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24045.


...HALES

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 7, 6:11 PM CSTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Madison, Washington94 min
Jan 7, 7:48 PM CSTTornado Watch PDSSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more9 hr
Jan 7, 10:04 PM CSTMesoscale DiscussionSPCBenton, Carroll, Washington86 min
Jan 8, 3:44 AM CSTMesoscale DiscussionSPCBaxter, Benton, Carroll, Fulton91 min
Jan 8, 7:18 AM CSTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 34 more117 min
Jan 8, 11:27 AM CSTMesoscale DiscussionSPCArkansas, Ashley, Baxter, Bradley, Calhoun, Chicot and 48 more2 hr
Jan 8, 1:11 PM CSTMesoscale DiscussionSPCChicot, Crittenden, Desha, Lee, Mississippi, Phillips and 1 more2 hr
Jan 8, 1:26 PM CSTTornado WatchSPCArkansas, Ashley, Bradley, Chicot, Crittenden, Desha and 7 more8 hr
Jan 8, 12:22 PM CSTMesoscale DiscussionSPCBallard, Breckinridge, Bullitt, Butler, Caldwell, Carroll and 26 more83 min
Jan 8, 4:03 PM CSTMesoscale DiscussionSPCAllen, Anderson, Barren, Breckinridge, Bullitt, Butler and 33 more117 min
Jan 8, 5:51 PM CSTMesoscale DiscussionSPCAllen, Clinton, Cumberland, Metcalfe, Monroe54 min
Jan 8, 3:59 PM CSTTornado WatchSPCAttala, Choctaw, Claiborne, Clarke, Clay, Copiah and 18 more3 hr
Jan 7, 6:57 PM CSTMesoscale DiscussionSPCAudrain, Barton, Benton, Boone, Callaway, Camden and 48 more93 min
Jan 7, 8:25 PM CSTMesoscale DiscussionSPCBarton, Bates, Chariton, Henry, Howard, Johnson and 5 more65 min
Jan 7, 8:55 PM CSTSevere Thunderstorm WatchSPCBarton, Bates, Carroll, Cass, Cedar, Chariton and 12 more8 hr
Jan 7, 11:18 PM CSTMesoscale DiscussionSPCBarton, Bates, Benton, Cedar, Henry, Johnson and 3 more87 min
Jan 8, 2:02 AM CSTMesoscale DiscussionSPCDent, Douglas, Shannon, Texas, Wright118 min

Nearby

Tornado Watches in Arkansas, 2008Tornado Watches in Tennessee, 2008Tornado Watches in Kentucky, 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.