Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 33, NWS Shreveport, LA

March 27, 2021Hempstead County, Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 27, 2021, 5:59 PM CDT for Hempstead County, Nevada County, Arkansas. It was in force for 23 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: Mar 27, 2021, 5:59 PM CDT (22:59 UTC)
Expired: Mar 27, 2021, 6:22 PM CDT
In force: 23 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

Counties Hempstead County, AR, Nevada County, AR

The radar

The Little Rock radar (KLZK), 148 km from the middle of the area, began a volume at 23:02 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
Mar 27, 6:08 PM CDT	HAIL 1.75	2 Wnw Prescott, AR	GOLF BALL SIZE HAIL REPORTED ALONG INTERSTATE 30.
Mar 27, 6:10 PM CDT	HAIL 2.5	5 Ne Prescott, AR	PUBLIC REPORT OF HAIL UP TO TENNIS BALL SIZE ON THE NORTHEAST SIDE OF PRESCOTT.

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
Mar 27, 3:25 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.0 hours before the alert went out and 160 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: 951 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted.

197 
WUUS54 KSHV 272259
SVRSHV
ARC057-099-272345-
/O.NEW.KSHV.SV.W.0033.210327T2259Z-210327T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
559 PM CDT Sat Mar 27 2021

The National Weather Service in Shreveport has issued a

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

* Until 645 PM CDT.

* At 559 PM CDT, a severe thunderstorm was located 7 miles southeast 
  of Blevins, or 8 miles west of Prescott, moving northeast at 30 
  mph.

  HAZARD...Two inch hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Prescott, Emmet, Perrytown and Boughton. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for southwestern
Arkansas.

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

&&

LAT...LON 3396 9337 3395 9336 3392 9334 3390 9331
      3390 9330 3388 9331 3384 9329 3384 9328
      3368 9353 3375 9364 3396 9344 3395 9342
TIME...MOT...LOC 2259Z 224DEG 27KT 3379 9353 

HAIL...2.00IN
WIND...60MPH
 
$$

15

2 follow-up statements

781 
WWUS54 KSHV 272307
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
607 PM CDT Sat Mar 27 2021

ARC057-099-272345-
/O.CON.KSHV.SV.W.0033.000000T0000Z-210327T2345Z/
Hempstead AR-Nevada AR-
607 PM CDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EAST CENTRAL HEMPSTEAD AND NORTHWESTERN NEVADA COUNTIES...

At 607 PM CDT, a severe thunderstorm was located just northwest of 
Prescott, moving northeast at 35 mph.

This is a very dangerous storm.

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

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
Prescott and Boughton. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for southwestern
Arkansas.

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

&&

LAT...LON 3396 9337 3395 9336 3392 9334 3390 9331
      3390 9330 3388 9331 3384 9329 3384 9328
      3373 9345 3381 9356 3396 9344 3395 9342
TIME...MOT...LOC 2306Z 225DEG 29KT 3384 9346 

HAIL...2.75IN
WIND...60MPH
 
$$

15

128 
WWUS54 KSHV 272322
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
622 PM CDT Sat Mar 27 2021

ARC057-099-272332-
/O.CAN.KSHV.SV.W.0033.000000T0000Z-210327T2345Z/
Hempstead AR-Nevada AR-
622 PM CDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HEMPSTEAD AND
NORTHWESTERN NEVADA COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However heavy rain is 
still possible with these thunderstorms.

A Tornado Watch remains in effect until 1100 PM CDT for southwestern
Arkansas.

LAT...LON 3396 9337 3395 9336 3392 9334 3390 9331
      3390 9330 3388 9331 3384 9329 3384 9328
      3373 9345 3381 9356 3396 9344 3395 9342
TIME...MOT...LOC 2321Z 224DEG 27KT 3393 9336 

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 4:04 PM CDT	Special Weather Statement	SHV	Columbia	41 min
Mar 27, 5:05 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	40 min
Mar 27, 5:34 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	26 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.