Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

October 5, 2021Union County, Arkansas

NWS Shreveport, LA issued this special weather statement at Oct 5, 2021, 2:22 PM CDT for Union County, Arkansas. It was in force for 23 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: Oct 5, 2021, 2:22 PM CDT (19:22 UTC)
Expired: Oct 5, 2021, 2:45 PM CDT
In force: 23 min
Issued by: NWS Shreveport, LA
Hail: 0.50 in
Wind: 40

County Union County, AR

The radar

The Shreveport radar (KSHV), 173 km from the middle of the area, began a volume at 19:21 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

Shreveport, LA (KSHV), launched 12:00Z, 7.4 hours before the alert went out and 164 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: 308 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1270 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Oct 5, 12:35 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Oct 5, 12:35 PM CDT, 1 hour 47 minutes before

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Hazardous weather outlook, Oct 5, 4:25 AM CDT, 9 hours 57 minutes before

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In the hours before

Special weather statement, Oct 5, 2:22 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Shreveport LA
222 PM CDT Tue Oct 5 2021

ARZ073-051945-
Union AR-
222 PM CDT Tue Oct 5 2021

...A strong thunderstorm will impact portions of southeastern Union
County through 245 PM CDT...

At 221 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Lapile, or 8 miles north of Huttig, moving
southwest at 20 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Huttig, Strong, Lapile and Felsenthal.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3301 9210 3301 9243 3326 9223 3323 9223
      3323 9222 3321 9223 3320 9221 3321 9218
      3316 9217 3317 9215 3316 9211 3312 9212
      3310 9214 3307 9213 3307 9211 3303 9211
      3303 9209
TIME...MOT...LOC 1921Z 025DEG 16KT 3317 9217

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

50

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 5, 3:44 PM CDT	Special Weather Statement	SHV	Lincoln	31 min
Oct 5, 3:45 PM CDT	Special Weather Statement	SHV	Claiborne	30 min
Oct 5, 4:19 PM CDT	Special Weather Statement	SHV	Claiborne	26 min
Oct 5, 2:53 PM CDT	Special Weather Statement	SHV	Union	37 min
Oct 5, 3:33 PM CDT	Special Weather Statement	SHV	Union	27 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.