Alert archive / Arkansas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 52, NWS Little Rock, AR

April 20, 2003Baxter County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 20, 2003, 1:08 AM CDT for Baxter County, Arkansas. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 20, 2003, 1:08 AM CDT (06:08 UTC)
Expired
Apr 20, 2003, 1:35 AM CDT
In force
27 min
Issued by
NWS Little Rock, AR
Area
Counties, with a storm outline in the text

County Baxter County, AR

The radar

The Springfield radar (KSGF), 142 km from the middle of the area, began a volume at 06:08 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 19, 10:35 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.1 hours before the alert went out and 147 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 00:00Z on 2003-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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 00:00Z on 2003-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 square meters per square second.1939587897Sfc1 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
11 J/kg
Mixed-layer CIN
-140 J/kg
Mixed-layer LCL
902 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 19, 9:45 PM CDT, 3 hours 23 minutes earlier.

Area forecast discussion, Apr 19, 9:45 PM CDT, 3 hours 23 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
945 PM CDT SAT APR 19 2003

...UPDATE THIS EVENING...

CURRENT FORECAST IN PRETTY GOOD SHAPE BUT GRIDS/ZONES WILL NEED TO
UPDATED TO REFLECT CURRENT TRENDS. SHOWERS CONTINUE OVER THE
SOUTHEAST WITH THE OCCASIONAL STRONG STORM STILL HOLDING ON. MAIN
FOCUS WILL BE LINE OF INTENSE CONVECTION MOVING INTO THE NORTHWEST
CORNER OF THE STATE. CURRENT THINKING IS MOST WILL MISS THE CWA BUT
IT WILL BE FOLLOWED CLOSELY.

LOW PRESSURE CONTINUES TO MOVE FROM CENTRAL ARKANSAS TOWARDS
SOUTHWEST MISSOURI. STRONG DYNAMICS ALOFT APPEAR TO BE STAYING
PRIMARILY TO THE NORTHWEST OF THE STATE. FRONT WILL PUSH INTO
CENTRAL ARKANSAS BY SUNDAY MORNING AND WILL EDGE SLOWLY EAST DURING
THE DAY. MAIN DYNAMICS/WIND ENERGY WILL RIDE NORTH OF THE STATE
GIVING FRONT LITTLE PUSH. DURING LATE MORNING AND AFTERNOON
HOURS...SCATTERED THUNDERSTORMS MAY REDEVELOP IN AREAS MAINLY
SOUTH/EAST OF LITTLE ROCK...WITH MOSTLY DRY WEATHER BEHIND THE
FRONT.

FCSTID =   56

.LZK...NONE.
Hazardous weather outlook, Apr 19, 7:28 PM CDT, 5 hours 40 minutes before
ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-201000-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
728 PM CDT SAT APR 19 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TONIGHT

THUNDERSTORMS ACROSS OKLAHOMA DEVELOPED IN ASSOCIATION WITH A COLD
FRONT AND AREA OF LOW PRESSURE ALOFT. THE THUNDERSTORMS ARE EXPECTED
TO ENTER WESTERN ARKANSAS TONIGHT THEN PUSH FARTHER INTO THE STATE
DURING THE EARLY MORNING HOURS. SOME OF THE STORMS COULD BE
SEVERE...MAINLY OVER WESTERN AND NORTHERN ARKANSAS. THE PRIMARY
SEVERE WEATHER THREATS WILL BE DAMAGING WINDS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE COLD FRONT WILL CONTINUE MOVING EASTWARD ACROSS CENTRAL AND
EASTERN ARKANSAS ON SUNDAY. SHOWERS AND THUNDERSTORMS WILL BE
POSSIBLE NEAR THE FRONT. ISOLATED STORMS COULD BECOME SEVERE OVER
CENTRAL AND EASTERN ARKANSAS...MAINLY DURING THE MORNING AND EARLY
AFTERNOON. LARGE HAIL AND DAMAGING WINDS WOULD BE THE MAIN SEVERE
WEATHER THREATS.

THE NEXT CHANCE OF THUNDERSTORMS WILL BE FROM LATE WEDNESDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED OVER PARTS OF WESTERN AND
NORTHERN ARKANSAS TONIGHT.

51

In the hours before

Local storm report, Apr 20, 12:02 AM CDT, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1202 AM CDT SUN APR 20 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1045 PM    2 SW HUNT                 AR   .88 INCH HAIL
04/19/03   JOHNSON                        REPORTED BY EMERGENCY
                                          MANAGEMENT

28

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 19, 9:33 PM CDTSevere Thunderstorm WarningLZKDesha, Lincoln27 min
Apr 19, 10:24 PM CDTSevere Thunderstorm WarningLZKArkansas31 min
Apr 19, 10:32 PM CDTSevere Thunderstorm WarningLZKJohnson58 min
Apr 19, 10:42 PM CDTSevere Thunderstorm WarningLZKJohnson48 min
Apr 19, 10:59 PM CDTSevere Thunderstorm WarningLZKMonroe31 min
Apr 20, 1:21 AM CDTSevere Thunderstorm WarningLZKFulton39 min
Apr 20, 1:52 AM CDTSevere Thunderstorm WarningLZKSearcy28 min
Apr 20, 3:10 PM CDTSevere Thunderstorm WarningLZKArkansas25 min
Apr 20, 5:46 PM CDTSevere Thunderstorm WarningLZKArkansas29 min
Apr 20, 6:06 PM CDTSevere Thunderstorm WarningLZKMonroe29 min
Apr 20, 6:21 PM CDTSevere Thunderstorm WarningLZKArkansas29 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2003Every severe thunderstorm warning 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.