Alert archive / Arkansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 113, NWS Little Rock, AR

May 2, 20095 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 2, 2009, 12:30 AM CDT for 5 counties in Arkansas. It was in force for 48 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: May 2, 2009, 12:30 AM CDT (05:30 UTC)
Expired: May 2, 2009, 1:18 AM CDT
In force: 48 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Cleburne County, AR, Conway County, AR, Faulkner County, AR, Van Buren County, AR, White County, AR

The radar

The Little Rock radar (KLZK), 58 km from the middle of the area, began a volume at 05:33 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
May 1, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.5 hours before the alert went out and 219 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: 2140 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 8.3

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 May 2, 12:16 AM CDT, 14 minutes earlier.

Area forecast discussion, May 2, 12:16 AM CDT, 14 minutes before

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Hazardous weather outlook, May 1, 10:30 PM CDT, 2 hours before

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In the hours before

Special weather statement, May 1, 7:27 PM CDT, 5 hours 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
727 PM CDT FRI MAY 1 2009

ARZ065-069-020055-
DESHA-DREW-
727 PM CDT FRI MAY 1 2009

...SIGNIFICANT WEATHER ALERT FOR DESHA AND DREW COUNTIES UNTIL 755 PM
CDT...

AT 726 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR SELMA...MOVING NORTHEAST AT 20 MPH.

SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

FREQUENT...DANGEROUS LIGHTNING IS OCCURRING WITH THIS STORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE
INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS
AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY.

61

Local storm report, May 1, 8:47 PM CDT, 3 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
847 PM CDT FRI MAY 01 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0828 PM     TORNADO          LIMESTONE               35.78N 93.28W
05/01/2009                   NEWTON             AR   LAW ENFORCEMENT

            POSSIBLE TORNADO TOUCHDOWN IN LIMESTONE VALLEY.

&&

61

Local storm report, May 1, 10:14 PM CDT, 2 hours 16 minutes before

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Local storm report, May 1, 10:26 PM CDT, 2 hours 4 minutes before

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Local storm report, May 2, 12:00 AM CDT, 30 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
May 1, 7:25 PM CDT	Tornado Warning	LZK	Boone, Newton	50 min
May 1, 8:04 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope	41 min
May 1, 8:16 PM CDT	Tornado Warning	LZK	Johnson, Newton	44 min
May 1, 8:28 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope	47 min
May 1, 8:42 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope, Searcy	31 min
May 1, 8:56 PM CDT	Tornado Warning	LZK	Johnson, Newton, Pope, Searcy, Van Buren	49 min
May 1, 9:19 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Pope	41 min
May 1, 9:45 PM CDT	Flash Flood Warning	LZK	Conway, Johnson, Newton, Pope, Searcy, Van Buren and 1 more	2 hr
May 1, 9:50 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Newton, Perry, Pope, Van Buren and 1 more	55 min
May 1, 9:54 PM CDT	Tornado Warning	LZK	Conway, Pope, Van Buren	51 min
May 1, 10:47 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Van Buren	58 min
May 1, 10:48 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Pope	42 min
May 1, 11:36 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Johnson, Logan, Perry, Pope, Yell	39 min
May 1, 11:45 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Van Buren, White	45 min
May 1, 11:50 PM CDT	Flash Flood Warning	LZK	Conway, Faulkner, Johnson, Logan, Newton, Pope and 3 more	6 hr
May 2, 12:18 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry, Pulaski	42 min
May 2, 12:38 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, White	52 min
May 2, 1:13 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, White	33 min
May 2, 2:12 AM CDT	Flash Flood Warning	LZK	Cleburne, Faulkner, Independence, Jackson, Stone, Van Buren and 2 more	4 hr
May 2, 3:46 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner	32 min
May 2, 6:58 AM CDT	Flash Flood Warning	LZK	Conway, Faulkner, Pope, Van Buren, Yell	4 hr
May 2, 7:54 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Perry, Yell	41 min
May 2, 8:08 AM CDT	Flash Flood Warning	LZK	Faulkner, Lonoke, Monroe, Prairie, Pulaski, White and 1 more	3 hr
May 2, 8:19 AM CDT	Flash Flood Warning	LZK	Scott, Yell	3 hr
May 2, 10:09 AM CDT	Flash Flood Warning	LZK	Johnson, Logan, Pope, Scott, Yell	3 hr
May 2, 11:04 AM CDT	Flash Flood Warning	LZK	Cleburne, Conway, Faulkner, Lonoke, Monroe, Perry and 8 more	6 hr
May 2, 11:35 AM CDT	Flash Flood Warning	LZK	Montgomery, Polk, Scott, Yell	6 hr
May 2, 11:42 AM CDT	Severe Thunderstorm Warning	LZK	Polk	48 min
May 2, 12:16 PM CDT	River Flood Warning	LZK	Prairie, White, Woodruff	23 hr
May 2, 12:16 PM CDT	River Flood Warning	LZK	Prairie	18 days
May 2, 12:23 PM CDT	River Flood Warning	LZK	Randolph	18 days
May 2, 12:24 PM CDT	River Flood Warning	LZK	White	32 hr
May 2, 12:34 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Montgomery, Pike	41 min
May 2, 2:02 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Jefferson	43 min
May 2, 2:08 PM CDT	Tornado Warning	LZK	Cleveland, Dallas, Grant, Jefferson, Lincoln	52 min
May 2, 2:56 PM CDT	Tornado Warning	LZK	Cleveland, Jefferson, Lincoln	49 min
May 2, 3:30 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Drew, Lincoln	45 min
May 2, 3:40 PM CDT	Flash Flood Warning	LZK	Clark, Dallas, Garland, Hot Spring, Montgomery, Perry and 4 more	6 hr
May 2, 3:51 PM CDT	Tornado Warning	LZK	Desha, Drew, Lincoln	39 min
May 2, 4:15 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Drew	60 min
May 2, 4:36 PM CDT	Severe Thunderstorm Warning	LZK	Desha	39 min
May 2, 4:59 PM CDT	Flash Flood Warning	LZK	Bradley, Calhoun, Clark, Cleveland, Dallas, Ouachita	6 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2009 Every severe thunderstorm warning in 2009

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.