Alert archive / Arkansas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 1, NWS Little Rock, AR

March 13, 2003Boone County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 13, 2003, 1:15 AM CST for Boone County, Arkansas. It was in force for 45 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: Mar 13, 2003, 1:15 AM CST (07:15 UTC)
Expired: Mar 13, 2003, 2:00 AM CST
In force: 45 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Boone County, AR

The radar

The Springfield radar (KSGF), 107 km from the middle of the area, began a volume at 07:16 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.3 hours before the alert went out and 91 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1109 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1150 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

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 Mar 12, 9:55 PM CST, 3 hours 20 minutes earlier.

Area forecast discussion, Mar 12, 9:55 PM CST, 3 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
955 PM CST WED MAR 12 2003

WILL UPDATE THE FORECAST TO RAISE LOW TEMPERATURES A COUPLE OF
DEGREES. TEMPERATURES ARE STILL WELL INTO THE 60S AND DEW POINT
TEMPERATURES ARE IN THE 50S AND 60S. MID 50S IN THE NORTH AND LOWER
60S IN THE SOUTH LOOKS MORE REASONABLE. SLOW MOVING COLD FRONT WILL
GET INTO ARKANSAS LATE TONIGHT AND SHOWERS AND THUNDERSTORMS WILL BE
EXPECTED ALONG THE FRONT. SHOWERS AND THUNDERSTORMS ARE EXPECTED
THROUGH NOON ON THURSDAY. OTHERWISE...THE FORECAST LOOKS TO BE ON
TRACK.

.LZK...NONE.

51

Hazardous weather outlook, Mar 12, 11:15 PM CST, 2 hours before

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-131100-

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1115 PM CST WED MAR 12 2003

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

.DAY ONE...TONIGHT

A COLD FRONT CONTINUES TO ADVANCE TOWARDS ARKANSAS FROM THE
NORTHWEST. SCATTERED SHOWERS AND THUNDERSTORMS HAVE DEVELOPED ACROSS
SOUTHERN MISSOURI AND EASTERN OKLAHOMA IN ADVANCE OF THE FRONT. A
FEW STORMS MAY BECOME SEVERE IN NORTHERN SECTIONS OF THE STATE LATE
TONIGHT ...MAINLY IN AREAS NORTH OF CLARKSVILLE AND BATESVILLE. THE
MAIN SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WINDS.
THE FRONT WILL CONTINUE TO MOVE SOUTHWARD TONIGHT FOR A CONTINUING
CHANCE OF SHOWERS AND THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED SHOWERS AND THUNDERSTORMS IN NORTHERN ARKANSAS ARE
EXPECTED TO WEAKEN AS THEY MOVE INTO CENTRAL AND SOUTHERN SECTIONS
OF THE STATE ON THURSDAY. THE FRONT RESPONSIBLE FOR TRIGGERING THE
STORMS WILL PUSH THROUGH THE REGION ON THURSDAY...WITH TRANQUIL
WEATHER RETURNING BY THURSDAY NIGHT. YET ANOTHER COLD FRONT WILL
ARRIVE FROM THE PLAINS BY TUESDAY OF NEXT WEEK. SEVERE WEATHER IS
POSSIBLE AHEAD OF THE FRONT MONDAY AND TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED LATE TONIGHT MAINLY IN NORTHERN
ARKANSAS.

56

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 2:40 AM CST	Severe Thunderstorm Warning	LZK	Logan, Polk, Scott	30 min
Mar 13, 4:03 AM CST	Severe Thunderstorm Warning	LZK	Pope	62 min
Mar 13, 5:00 AM CST	Severe Thunderstorm Warning	LZK	Ouachita	30 min
Mar 13, 5:14 AM CST	Severe Thunderstorm Warning	LZK	Prairie	31 min
Mar 13, 6:52 AM CST	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson	43 min
Mar 13, 7:00 AM CST	Severe Thunderstorm Warning	LZK	Lincoln	30 min
Mar 13, 7:02 AM CST	Severe Thunderstorm Warning	LZK	Lincoln	28 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2003 Every 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.