Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Shreveport, LA

May 9, 2021Hempstead County, Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at May 9, 2021, 4:59 PM CDT for Hempstead County, Nevada County, Arkansas. It was in force for 46 min. 2 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: May 9, 2021, 4:59 PM CDT (21:59 UTC)
Expired: May 9, 2021, 5:45 PM CDT
In force: 46 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hempstead County, AR, Nevada County, AR

The radar

The Shreveport radar (KSHV), 137 km from the middle of the area, began a volume at 22:00 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, 5:06 PM CDT	HAIL 1	2 W Hope, AR	QUARTER SIZE HAIL REPORTED IN THE GUERNSEY COMMUNITY WEST OF HOPE.
May 9, 5:27 PM CDT	HAIL 1	5 Se Hope, AR	QUARTER SIZE HAILED SE OF HOPE IN THE SHOVER SPRINGS AREA.

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, 10.0 hours before the alert went out and 133 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.

099 
WUUS54 KSHV 092159
SVRSHV
ARC057-099-092245-
/O.NEW.KSHV.SV.W.0129.210509T2159Z-210509T2245Z/

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

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Central Hempstead County in southwestern Arkansas...
  Southwestern Nevada County in southwestern Arkansas...

* Until 545 PM CDT.

* At 459 PM CDT, a severe thunderstorm was located near Fulton, or 11
  miles west of Hope, 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...
  Hope, Prescott, Emmet, Perrytown, Fulton, Washington, Bodcaw,
  McNab, Oakhaven and Sutton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3384 9336 3349 9340 3360 9381 3361 9382
      3361 9383 3362 9385 3362 9386 3363 9386
      3364 9388 3375 9387 3375 9383 3379 9383
TIME...MOT...LOC 2159Z 274DEG 28KT 3370 9378 

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

33

1 follow-up statement

561 
WWUS54 KSHV 092232
SVSSHV

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

ARC057-099-092245-
/O.CON.KSHV.SV.W.0129.000000T0000Z-210509T2245Z/
Hempstead AR-Nevada AR-
532 PM CDT Sun May 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR SOUTHEASTERN HEMPSTEAD AND SOUTHWESTERN NEVADA COUNTIES...

At 531 PM CDT, a severe thunderstorm was located over Emmet, or near
Hope, 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...
Hope, Prescott, Emmet, Perrytown, Bodcaw and Sutton. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3384 9336 3349 9340 3356 9365 3382 9351
TIME...MOT...LOC 2231Z 274DEG 28KT 3368 9348 

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

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, 3:23 PM CDT	Severe Thunderstorm Warning	SHV	Howard	37 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, 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.