Alert archive / Arkansas / Tornado Watches in 2003

Tornado Watch 299

May 8, 200324 counties in Arkansas

The Storm Prediction Center issued this tornado watch at May 8, 2003, 8:25 AM CDT for 24 counties in Arkansas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2003, 8:25 AM CDT (13:25 UTC)
Expired
May 8, 2003, 1:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 24 counties

Baxter County, AR, Boone County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Marion County, AR, Newton County, AR, Poinsett County, AR, Pope County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 107 km from the middle of the area, began a volume at 13:28 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 8, 8:36 AM CDTSevere Thunderstorm WarningLZKPope44 min
May 8, 8:56 AM CDTTornado WarningLZKPope49 min
May 8, 9:42 AM CDTSevere Thunderstorm WarningLZKSearcy, Van Buren43 min
May 8, 10:04 AM CDTTornado WarningLZKVan Buren61 min
May 8, 10:30 AM CDTSevere Thunderstorm WarningLZKCleburne, Stone60 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

Springfield, MO (KSGF), launched 12:00Z, 1.4 hours before the alert went out and 192 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, Springfield, MO at 12:00Z on 2003-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 41 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, Springfield, MO at 12:00Z on 2003-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 501 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
41 J/kg
Mixed-layer CIN
-340 J/kg
Mixed-layer LCL
1727 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
501 m²/s²
0-3 km storm-relative helicity
564 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.

000 
WWUS20 KWNS 081321
SEL9  
SPC WW 081325
ARZ000-081800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 299 
NWS STORM PREDICTION CENTER NORMAN OK 
825 AM CDT THU MAY 8 2003

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

       NORTHERN ARKANSAS

EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 825 AM UNTIL
100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 45 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 30 MILES EAST SOUTHEAST OF JONESBORO ARKANSAS
TO 45 MILES SOUTH SOUTHWEST OF HARRISON ARKANSAS.

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 298. WATCH NUMBER 298 WILL NOT BE IN EFFECT AFTER 825
AM CDT. CONTINUE...WW 297...


DISCUSSION...SUPERCELLS MAY CONTINUE EWD ACROSS NRN AR ALONG SURFACE
FRONT NOW EXTENDING FROM NORTH OF LIT TO JUST NORTH OF MEM.  AIR
MASS REMAINS MODERATELY UNSTABLE AND LOW TO MID LEVEL SHEAR IS
FAVORABLE FOR TORNADIC SUPERCELLS IF ACTIVITY REMAINS NEAR SURFACE
BASED.	VERY LARGE HAIL IS ALSO A THREAT WITH THESE STORMS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26030.


...EVANS

350,0900 350,0932 361,0932 361,0900

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 1:18 AM CDTMesoscale DiscussionSPCBenton, Garland, Grant, Hot Spring, Lincoln, Montgomery and 2 more3 hr
May 8, 1:55 AM CDTSevere Thunderstorm WatchSPCBenton, Carroll5 hr
May 8, 5:02 AM CDTMesoscale DiscussionSPCCrawford, Franklin, Howard, Johnson, Logan, Madison and 8 more2 hr
May 8, 6:20 AM CDTTornado WatchSPCCrawford, Franklin, Logan, Montgomery, Scott, Sebastian and 1 more3 hr
May 8, 7:33 AM CDTMesoscale DiscussionSPCCrawford, Franklin, Johnson, Logan, Montgomery, Scott and 2 more87 min
May 8, 9:55 AM CDTMesoscale DiscussionSPCMississippi3 hr
May 8, 10:21 AM CDTMesoscale DiscussionSPCClay, Cleburne, Craighead, Greene, Independence, Izard and 8 more84 min
May 8, 10:25 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 3 more6 hr
May 8, 11:59 AM CDTMesoscale DiscussionSPCClay, Cleburne, Craighead, Greene, Independence, Izard and 8 more2 hr
May 8, 12:24 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 2 more2 hr
May 8, 5:31 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Johnson, Logan and 4 more59 min
May 8, 5:45 PM CDTTornado WatchSPCBenton, Crawford, Sebastian, Washington5 hr
May 8, 6:38 PM CDTMesoscale DiscussionSPCBenton, Crawford, Washington2 hr

Nearby

Tornado Watches in Arkansas, 2003Every tornado watch in 2003

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.