Alert archive / Arkansas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 86, NWS Little Rock, AR

April 13, 2007Grant County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 13, 2007, 8:12 PM CDT for Grant County, Arkansas. It was in force for 33 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 13, 2007, 8:12 PM CDT (01:12 UTC)
Expired: Apr 13, 2007, 8:45 PM CDT
In force: 33 min
Issued by: NWS Little Rock, AR
Area: Counties, with a storm outline in the text

County Grant County, AR

The radar

The Little Rock radar (KLZK), 63 km from the middle of the area, began a volume at 01:15 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.

Issued	Product	Office	Lasted
Apr 13, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.2 hours before the alert went out and 234 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 762 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 622 m²/s²
0-3 km storm-relative helicity: 1200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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 13, 6:12 PM CDT, 2 hours earlier.

Area forecast discussion, Apr 13, 6:12 PM CDT, 2 hours before

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Hazardous weather outlook, Apr 13, 5:00 AM CDT, 15 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT FRI APR 13 2007

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-141000-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
500 AM CDT FRI APR 13 2007

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

.DAY ONE...TODAY AND TONIGHT

A STORM SYSTEM CURRENTLY IN THE SOUTHWEST PART OF THE NATION WILL
MOVE ACROSS SOUTHERN ARKANSAS DURING THE PERIOD BRINGING A CHANCE OF
HEAVY RAIN AND POSSIBLE SEVERE WEATHER TO THE NATURAL STATE.

SCATTERED SHOWERS WILL BE POSSIBLE MOST OF THE MORNING WITH
WIDESPREAD RAIN DEVELOPING DURING THE AFTERNOON. ISOLATED
THUNDERSTORMS WILL BE POSSIBLE WITH THE BEST CHANCES OVER THE
SOUTHERN PART OF THE STATE. A WARM FRONT IS FORECAST TO MOVE
EASTWARD AND STRADDLE THE LOUISIANA AND ARKANSAS BORDER BY THE END
OF THE DAY. COPIOUS AMOUNTS OF GULF MOISTURE WILL RIDE UP AND OVER
THE BOUNDARY. THE RESULT WILL BE WIDESPREAD...LOCALLY HEAVY...RAIN
ACROSS THE FORECAST AREA.

THE WARM FRONT IS THEN EXPECTED TO MOVE SLOWLY TO THE NORTH LATE
THIS AFTERNOON OR EARLY TONIGHT. AREAS ALONG AND TO THE SOUTH OF THE
BOUNDARY WILL HAVE THE BEST CHANCES OF SEEING ORGANIZED SEVERE
WEATHER ESPECIALLY AS THE LOW PRESSURE SYSTEM AND ASSOCIATED COLD
FRONT MOVE ACROSS SOUTHERN ARKANSAS. THE BEST CHANCES OF SEEING
SEVERE WEATHER WILL BE SOUTH OF A HOPE TO MONTICELLO LINE BUT
ISOLATED SEVERE THUNDERSTORMS COULD OCCUR FURTHER NORTH...ROUGHLY
ALONG AN ARKADELPHIA TO PINE BLUFF LINE. THE ATMOSPHERE APPEARERS TO
REMAIN TOO STABLE FOR SEVERE WEATHER NORTH OF THIS LINE BUT AN
ISOLATED THUNDERSTORM OF TWO WILL REMAIN POSSIBLE.

THE SEVERE STORMS...SHOULD THEY DEVELOP IN THE WARM SECTOR...WILL BE
CAPABLE OF PRODUCING STRONG DAMAGING WINDS...LARGE HAIL AND
POSSIBLY A TORNADO OR TWO. THE STORM PREDICTION CENTER HAS ISSUED A
MODERATE RISK OF SEVERE WEATHER OVER FAR SOUTHWEST ARKANSAS WITH A
SLIGHT RISK AS FAR NORTH AS A BRINKLEY TO CONWAY TO CLARKSVILLE LINE.

THE POSSIBILITY OF HEAVY RAIN WILL CONTINUE ACROSS THE REMAINDER OF
THE FORECAST AREA THROUGH MOST OF THE NIGHT WITH PRECIPITATION
CHANCES DECREASING TOWARDS MORNING AS THE SYSTEM PULLS AWAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SHOWERS AND THUNDERSTORMS WILL LINGER INTO EARLY SATURDAY...WITH
COOLER WEATHER TO RETURN FOR THE WEEKEND. WARMER TEMPERATURES ARE
THEN EXPECTED FOR MONDAY. THE NEXT SYSTEM WILL APPROACH ON TUESDAY
AND BRING A CHANCE OF SHOWERS AND THUNDERSTORMS WHICH WILL CONTINUE
INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATER TONIGHT.

VISIT NWS LITTLE ROCK ON THE WEB. GO TO WEATHER.GOV AND CLICK ON
CENTRAL ARKANSAS.

38/56

In the hours before

Local storm report, Apr 13, 2:41 PM CDT, 5 hours 31 minutes before

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Local storm report, Apr 13, 5:32 PM CDT, 2 hours 40 minutes before

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Local storm report, Apr 13, 6:34 PM CDT, 1 hour 38 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:08 PM CDT	Severe Thunderstorm Warning	LZK	Hot Spring, Saline	36 min
Apr 13, 7:16 PM CDT	Severe Thunderstorm Warning	LZK	Lincoln	44 min
Apr 13, 7:29 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski	31 min
Apr 13, 7:37 PM CDT	Severe Thunderstorm Warning	LZK	Garland	23 min
Apr 13, 8:15 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas	45 min
Apr 13, 8:29 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Pike	31 min
Apr 13, 8:31 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	29 min
Apr 13, 8:55 PM CDT	Severe Thunderstorm Warning	LZK	Grant	35 min
Apr 13, 9:35 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson, Pulaski	25 min
Apr 13, 10:03 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas	27 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2007 Every severe thunderstorm warning in 2007

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.