Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 50, NWS Little Rock, AR

March 27, 20184 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 27, 2018, 10:49 AM CDT for 4 counties in Arkansas. It was in force for 41 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 27, 2018, 10:49 AM CDT (15:49 UTC)
Expired: Mar 27, 2018, 11:30 AM CDT
In force: 41 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Johnson County, AR, Logan County, AR, Newton County, AR, Pope County, AR

The radar

The Western Arkansas radar (KSRX), 95 km from the middle of the area, began a volume at 15:50 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 12:00Z, 3.8 hours before the alert went out and 157 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -58 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 27, 6:50 AM CDT, 3 hours 59 minutes earlier.

Area forecast discussion, Mar 27, 6:50 AM CDT, 3 hours 59 minutes before

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Hazardous weather outlook, Mar 27, 5:16 AM CDT, 5 hours 33 minutes before

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In the hours before

Special weather statement, Mar 27, 10:38 AM CDT, 11 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
Mar 26, 10:44 PM CDT	River Flood Advisory	LZK	Independence	36 hr
Mar 27, 3:40 AM CDT	Wind Advisory	LZK	Arkansas, Desha, Jackson, Jefferson, Lincoln, Lonoke and 4 more	15 hr
Mar 27, 10:38 AM CDT	Special Weather Statement	LZK	Logan	37 min
Mar 27, 11:26 AM CDT	Special Weather Statement	LZK	Pope	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.