Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 45, NWS Little Rock, AR

March 19, 20185 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 19, 2018, 2:01 AM CDT for 5 counties in Arkansas. It was in force for 44 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 19, 2018, 2:01 AM CDT (07:01 UTC)
Expired: Mar 19, 2018, 2:45 AM CDT
In force: 44 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Garland County, AR, Montgomery County, AR, Perry County, AR, Saline County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 83 km from the middle of the area, began a volume at 07:02 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, 7.0 hours before the alert went out and 247 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: 1866 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 19, 12:31 AM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, Mar 19, 12:31 AM CDT, 1 hour 30 minutes before

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Hazardous weather outlook, Mar 19, 12:34 AM CDT, 1 hour 27 minutes before

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In the hours before

Special weather statement, Mar 19, 1:08 AM CDT, 53 minutes before

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Special weather statement, Mar 19, 1:55 AM CDT, 6 minutes before

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Local storm report, Mar 19, 1:56 AM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
156 AM CDT MON MAR 19 2018

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

0155 AM     HAIL             4 S MT IDA              34.49N 93.63W
03/19/2018  E0.50 INCH       MONTGOMERY         AR   CO-OP OBSERVER

            THE GROUND WAS COVERED WITH MARBLE SIZED HAIL 4 MILES
            SOUTH OF MOUNT IDA.

&&

57

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 1:08 AM CDT	Special Weather Statement	LZK	Cleveland, Lincoln	52 min
Mar 19, 1:55 AM CDT	Special Weather Statement	LZK	Montgomery	35 min
Mar 19, 3:10 AM CDT	Special Weather Statement	LZK	Desha	35 min
Mar 19, 3:20 AM CDT	Severe Thunderstorm Warning	LZK	Desha	13 min
Mar 19, 4:20 AM CDT	Special Weather Statement	LZK	Johnson, Logan, Pope	40 min
Mar 19, 4:56 AM CDT	Special Weather Statement	LZK	Johnson, Searcy	49 min
Mar 19, 5:24 AM CDT	Special Weather Statement	LZK	Pike	36 min
Mar 19, 5:54 AM CDT	Special Weather Statement	LZK	Hot Spring	36 min
Mar 19, 5:58 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Grant, Hot Spring, Saline	32 min
Mar 19, 6:19 AM CDT	Special Weather Statement	LZK	Faulkner, White	26 min
Mar 19, 6:29 AM CDT	Severe Thunderstorm Warning	LZK	Grant, Hot Spring, Jefferson	31 min
Mar 19, 6:59 AM CDT	Special Weather Statement	LZK	Jefferson	31 min
Mar 19, 7:28 AM CDT	Special Weather Statement	LZK	Monroe	32 min
Mar 19, 7:56 AM CDT	Special Weather Statement	LZK	Monroe	34 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2018 Every severe thunderstorm warning in 2018

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.