Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 124, NWS Shreveport, LA

May 9, 2021Howard County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at May 9, 2021, 3:23 PM CDT for Howard County, Arkansas. It was in force for 37 min. 1 report 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: May 9, 2021, 3:23 PM CDT (20:23 UTC)
Expired: May 9, 2021, 4:00 PM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Howard County, AR

The radar

The Western Arkansas radar (KSRX), 133 km from the middle of the area, began a volume at 20:22 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
May 9, 4:00 PM CDT	HAIL 1	7 Ene Center Point, AR	NATHAN, AR REPORTS HALF DOLLAR SIZE HAIL.

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
May 9, 1:14 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.4 hours before the alert went out and 187 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: 853 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 639 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 490 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

389 
WUUS54 KSHV 092023
SVRSHV
ARC061-092100-
/O.NEW.KSHV.SV.W.0124.210509T2023Z-210509T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
323 PM CDT Sun May 9 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Northeastern Howard County in southwestern Arkansas...

* Until 400 PM CDT.

* At 323 PM CDT, a severe thunderstorm was located near Dierks,
  moving east at 20 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...
  Dierks, Corinth and Muddy Fork. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3419 9392 3418 9382 3402 9382 3407 9401
      3422 9400 3422 9392
TIME...MOT...LOC 2023Z 275DEG 15KT 3413 9392 

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

33

1 follow-up statement

212 
WWUS54 KSHV 092051
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
351 PM CDT Sun May 9 2021

ARC061-092101-
/O.EXP.KSHV.SV.W.0124.000000T0000Z-210509T2100Z/
Howard AR-
351 PM CDT Sun May 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HOWARD COUNTY
WILL EXPIRE AT 400 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southwestern Arkansas.

LAT...LON 3419 9392 3418 9382 3402 9382 3407 9401
      3422 9400 3422 9392
TIME...MOT...LOC 2051Z 275DEG 15KT 3412 9379 

$$

33

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 2:55 PM CDT	Special Weather Statement	SHV	Howard	50 min
May 9, 2:55 PM CDT	Special Weather Statement	SHV	Nevada	50 min
May 9, 3:56 PM CDT	Special Weather Statement	SHV	Little River	49 min
May 9, 4:07 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	38 min
May 9, 4:26 PM CDT	Special Weather Statement	SHV	Nevada	49 min
May 9, 4:44 PM CDT	Special Weather Statement	SHV	Hempstead	46 min
May 9, 4:49 PM CDT	Special Weather Statement	SHV	Columbia, Lafayette	41 min
May 9, 4:59 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	46 min
May 9, 5:05 PM CDT	Severe Thunderstorm Warning	SHV	Nevada	55 min
May 9, 5:59 PM CDT	Special Weather Statement	SHV	Nevada	46 min
May 9, 6:47 PM CDT	Special Weather Statement	SHV	Columbia, Lafayette	58 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.