Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 56, NWS Shreveport, LA

April 9, 20214 counties in Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 2:32 PM CDT for 4 counties in Arkansas. It was in force for 43 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 9, 2021, 2:32 PM CDT (19:32 UTC)
Expired: Apr 9, 2021, 3:15 PM CDT
In force: 43 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Columbia County, AR, Lafayette County, AR, Nevada County, AR, Union County, AR

The radar

The Shreveport radar (KSHV), 120 km from the middle of the area, began a volume at 19:33 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.

What was reported inside it

Time	Report	Where	Remark
Apr 9, 2:40 PM CDT	TSTM WND GST 60	1 Se Magnolia, AR
Apr 9, 2:45 PM CDT	TSTM WND DMG	4 Ese Rosston, AR	SEVERAL TREES DOWN ON HIGHWAY 278 JUST EAST OF CANEY CREEK.
Apr 9, 2:50 PM CDT	HAIL 0.88	1 Se Magnolia, AR	ALSO HIGH WINDS ARE KNOCKING DOWN NUMEROUS SMALL BRANCHES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 9, 12:07 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 7.5 hours before the alert went out and 113 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: 928 J/kg
Mixed-layer CIN: -310 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

051 
WUUS54 KSHV 091932
SVRSHV
ARC027-073-099-139-092015-
/O.NEW.KSHV.SV.W.0056.210409T1932Z-210409T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
232 PM CDT Fri Apr 9 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Northeastern Lafayette County in southwestern Arkansas...
  Southern Nevada County in southwestern Arkansas...
  Western Union County in south central Arkansas...
  Columbia County in southwestern Arkansas...

* Until 315 PM CDT.

* At 232 PM CDT, severe thunderstorms were located along a line
  extending from near Bodcaw to Waldo to near Springhill, moving east
  at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Magnolia, Waldo, McNeil, Emmet, Emerson, Rosston, Willisville,
  Bodcaw, Bluff City, Mount Holly, Atlanta, Village, Macedonia, White
  Oak Lake State Park, Calhoun, Cale, Laughlin, Waterloo, College
  Hill and Spotville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3338 9312 3337 9287 3302 9289 3302 9342
      3335 9335 3371 9347 3374 9311
TIME...MOT...LOC 1932Z 271DEG 27KT 3364 9340 3335 9329 3303 9337 

HAIL...1.00IN
WIND...60MPH
 
$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 10:41 AM CDT	Special Weather Statement	SHV	Hempstead	49 min
Apr 9, 11:25 AM CDT	Special Weather Statement	SHV	Little River	50 min
Apr 9, 12:28 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	45 min
Apr 9, 12:34 PM CDT	Special Weather Statement	SHV	Nevada	41 min
Apr 9, 12:45 PM CDT	Severe Thunderstorm Warning	SHV	Little River	33 min
Apr 9, 1:49 PM CDT	Special Weather Statement	SHV	Lafayette, Miller	41 min
Apr 9, 2:03 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Miller, Nevada	30 min
Apr 9, 3:05 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Union	55 min
Apr 9, 3:57 PM CDT	Severe Thunderstorm Warning	SHV	Union	33 min
Apr 9, 4:30 PM CDT	Severe Thunderstorm Warning	SHV	Union	30 min
Apr 9, 5:01 PM CDT	Severe Thunderstorm Warning	SHV	Union	44 min
Apr 9, 5:58 PM CDT	Severe Thunderstorm Warning	SHV	Union	21 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.