Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Shreveport, LA

March 27, 20215 counties in Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 27, 2021, 7:56 PM CDT for 5 counties in Arkansas. It was in force for 49 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, 7:56 PM CDT (00:56 UTC)
Expired: Mar 27, 2021, 8:45 PM CDT
In force: 49 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 70.0 mph

Counties Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Miller County, AR, Nevada County, AR

The radar

The Shreveport radar (KSHV), 119 km from the middle of the area, began a volume at 00:58 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, 7:57 PM CDT	TSTM WND DMG	1 Nne Lewisville, AR	TREE DOWN NEAR COUNTY ROAD 120.
Mar 27, 7:57 PM CDT	TSTM WND DMG	2 N Lewisville, AR	TREE DOWN NEAR COUNTY ROAD 25.

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 00:00Z, 0.9 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: 1297 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

As transmitted.

877 
WUUS54 KSHV 280056
SVRSHV
ARC027-057-073-091-099-280145-
/O.NEW.KSHV.SV.W.0036.210328T0056Z-210328T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
756 PM CDT Sat Mar 27 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hempstead County in southwestern Arkansas...
  East central Miller County in southwestern Arkansas...
  Northeastern Lafayette County in southwestern Arkansas...
  Southern Nevada County in southwestern Arkansas...
  Northern Columbia County in southwestern Arkansas...

* Until 845 PM CDT.

* At 756 PM CDT, severe thunderstorms were located along a line
  extending from Bodcaw to 6 miles south of Lewisville, moving east
  at 60 mph.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Magnolia, Stamps, Waldo, Lewisville, McNeil, Buckner, Rosston,
  Garland, Willisville, Bodcaw, Smithland, Village, Calhoun, Mount
  Vernon, Cale, Patmos, Lerch, Laughlin, Waterloo and Falcon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 3338 9312 3338 9298 3321 9299 3321 9383
      3360 9363 3367 9311
TIME...MOT...LOC 0056Z 253DEG 52KT 3354 9339 3327 9359 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

15

1 follow-up statement

442 
WWUS54 KSHV 280122 RRA
SVSSHV

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

ARC057-091-280131-
/O.CAN.KSHV.SV.W.0036.000000T0000Z-210328T0145Z/
Hempstead AR-Miller AR-
822 PM CDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HEMPSTEAD AND
EAST CENTRAL MILLER COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 3338 9312 3338 9298 3321 9299 3323 9346
      3363 9337 3367 9311
TIME...MOT...LOC 0121Z 257DEG 28KT 3354 9313 3327 9333 

$$

ARC027-073-099-280145-
/O.CON.KSHV.SV.W.0036.000000T0000Z-210328T0145Z/
Lafayette AR-Nevada AR-Columbia AR-
822 PM CDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN LAFAYETTE...SOUTHEASTERN NEVADA AND NORTHERN
COLUMBIA COUNTIES...

At 821 PM CDT, severe thunderstorms were located along a line
extending from 8 miles east of Rosston to near Smithland, moving east
at 30 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Magnolia, Waldo, McNeil, Buckner, Rosston, Willisville, Bodcaw,
Village, Smithland, Calhoun, Mount Vernon, Cale, Young, Ebenezer,
Laughlin, Waterloo, Cornelius, Mount Moriah, College Hill and
Lamartine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 3338 9312 3338 9298 3321 9299 3323 9346
      3363 9337 3367 9311
TIME...MOT...LOC 0121Z 257DEG 28KT 3354 9313 3327 9333 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 7:20 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Lafayette, Miller	40 min
Mar 27, 10:23 PM CDT	Severe Thunderstorm Warning	SHV	Union	67 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.