Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Little Rock, AR

June 21, 2021Boone County, Arkansas

NWS Little Rock, AR issued this special weather statement at Jun 21, 2021, 8:06 AM CDT for Boone County, Arkansas. It was in force for 39 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: Jun 21, 2021, 8:06 AM CDT (13:06 UTC)
Expired: Jun 21, 2021, 8:45 AM CDT
In force: 39 min
Issued by: NWS Little Rock, AR
Hail: 0.75 in
Wind: 40

County Boone County, AR

The radar

The Springfield radar (KSGF), 125 km from the middle of the area, began a volume at 13:05 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

Little Rock, AR (KLZK), launched 12:00Z, 1.1 hours before the alert went out and 327 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: 2000 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 134 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 9:40 AM CDT	Special Weather Statement	LZK	Cleburne, Independence, Izard, Jackson, Lawrence, Stone	50 min
Jun 21, 10:17 AM CDT	Special Weather Statement	LZK	Johnson, Logan, Scott	43 min
Jun 21, 10:31 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	35 min

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.