Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Little Rock, AR

April 24, 2021Polk County, Arkansas

NWS Little Rock, AR issued this special weather statement at Apr 24, 2021, 1:43 AM CDT for Polk County, Arkansas. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 24, 2021, 1:43 AM CDT (06:43 UTC)
Expired: Apr 24, 2021, 2:15 AM CDT
In force: 32 min
Issued by: NWS Little Rock, AR

County Polk County, AR

The radar

The Western Arkansas radar (KSRX), 94 km from the middle of the area, began a volume at 06:43 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, 6.7 hours before the alert went out and 274 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: 1023 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 24, 12:29 AM CDT, 1 hour 14 minutes earlier.

Area forecast discussion, Apr 24, 12:29 AM CDT, 1 hour 14 minutes before

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Hazardous weather outlook, Apr 23, 3:31 AM CDT, 22 hours 12 minutes before

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In the hours before

Special weather statement, Apr 24, 1:21 AM CDT, 22 minutes before

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Special weather statement, Apr 24, 1:43 AM CDT, 0 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 24, 1:21 AM CDT	Special Weather Statement	LZK	Polk	24 min
Apr 24, 1:58 AM CDT	Special Weather Statement	LZK	Pike	32 min
Apr 24, 2:28 AM CDT	Special Weather Statement	LZK	Clark, Pike	32 min
Apr 24, 2:57 AM CDT	Special Weather Statement	LZK	Calhoun, Clark, Dallas, Hot Spring, Ouachita	33 min
Apr 24, 3:26 AM CDT	Special Weather Statement	LZK	Bradley, Calhoun, Dallas	34 min
Apr 24, 3:55 AM CDT	Special Weather Statement	LZK	Bradley, Cleveland, Drew, Lincoln	35 min
Apr 24, 4:28 AM CDT	Special Weather Statement	LZK	Desha, Drew	47 min
Apr 24, 10:14 AM CDT	River Flood Warning	LZK	Bradley, Calhoun, Union	60 days
Apr 24, 10:14 AM CDT	River Flood Warning	LZK	Calhoun, Ouachita	4 days

Nearby

Special Weather Statements in Arkansas, 2021 Every special weather statement in 2021

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.