Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 50, NWS Shreveport, LA

April 9, 2021Hempstead County, Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 12:28 PM CDT for Hempstead County, Nevada County, Arkansas. It was in force for 45 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: Apr 9, 2021, 12:28 PM CDT (17:28 UTC)
Expired: Apr 9, 2021, 1:13 PM CDT
In force: 45 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), 145 km from the middle of the area, began a volume at 17:29 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 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, 5.5 hours before the alert went out and 141 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.

422 
WUUS54 KSHV 091728
SVRSHV
ARC057-099-091830-
/O.NEW.KSHV.SV.W.0050.210409T1728Z-210409T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1228 PM CDT Fri Apr 9 2021

The National Weather Service in Shreveport has issued a

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

* Until 130 PM CDT.

* At 1228 PM CDT, a severe thunderstorm was located near Fulton, or
  15 miles west of Hope, moving northeast at 40 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, Blevins, Perrytown, Fulton, Washington,
  McCaskill, Ozan, McNab, Oakhaven and Boughton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3390 9330 3384 9329 3382 9320 3354 9381
      3356 9379 3357 9383 3361 9382 3364 9389
      3363 9392 3365 9390 3367 9392 3365 9394
      3367 9397 3375 9388 3375 9383 3378 9383
      3396 9358 3394 9351 3396 9347 3396 9338
TIME...MOT...LOC 1728Z 233DEG 35KT 3365 9386 

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

50

2 follow-up statements

867 
WWUS54 KSHV 091759
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
1259 PM CDT Fri Apr 9 2021

ARC057-099-091830-
/O.CON.KSHV.SV.W.0050.000000T0000Z-210409T1830Z/
Hempstead AR-Nevada AR-
1259 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHEASTERN HEMPSTEAD AND NORTHWESTERN NEVADA COUNTIES...

At 1258 PM CDT, a severe thunderstorm was located over Blevins, or 10
miles west of Prescott, moving northeast at 40 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...
Prescott, Blevins, Washington, McCaskill, Ozan, Oakhaven and
Boughton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3371 9359 3383 9376 3396 9358 3394 9351
      3396 9347 3396 9338 3390 9330 3384 9329
      3383 9326
TIME...MOT...LOC 1758Z 233DEG 35KT 3383 9357 

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

50

659 
WWUS54 KSHV 091813
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
113 PM CDT Fri Apr 9 2021

ARC057-099-091823-
/O.CAN.KSHV.SV.W.0050.000000T0000Z-210409T1830Z/
Hempstead AR-Nevada AR-
113 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HEMPSTEAD AND
NORTHWESTERN NEVADA COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
southwestern Arkansas.

LAT...LON 3371 9359 3383 9376 3396 9358 3394 9351
      3396 9347 3396 9338 3390 9330 3384 9329
      3383 9326
TIME...MOT...LOC 1809Z 233DEG 35KT 3392 9343 

$$

50

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, 12:34 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, 2:32 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette, Nevada, Union	43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.