Alert archive / Arkansas / Tornado Warnings in 2021

Tornado Warning 26, NWS Shreveport, LA

June 7, 2021Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Jun 7, 2021, 4:08 PM CDT for Union 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: Jun 7, 2021, 4:08 PM CDT (21:08 UTC)
Expired: Jun 7, 2021, 4:45 PM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Union County, AR

The radar

The Shreveport radar (KSHV), 155 km from the middle of the area, began a volume at 21:08 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
Jun 7, 4:26 PM CDT	TORNADO	3 W Calion, AR	A TORNADO BRIEFLY TOUCHED DOWN JUST WEST OF THE CALION COMMUNITY NEAR RICKER ROAD. SINCE THIS WEAK TORNADO LOFTED DUST, GRASS, AND DIRT AND NO DAMAGE WAS FOUND, THIS TORNADO WILL BE RATED AN EF-UNKNOWN.

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
Jun 7, 12:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.1 hours before the alert went out and 146 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: 2401 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted.

532 
WFUS54 KSHV 072108
TORSHV
ARC139-072145-
/O.NEW.KSHV.TO.W.0026.210607T2108Z-210607T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
408 PM CDT Mon Jun 7 2021

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  North central Union County in south central Arkansas...

* Until 445 PM CDT.
    
* At 407 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located 4 miles southeast of Norphlet, moving 
  northeast at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Calion around 425 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3323 9260 3329 9268 3336 9266 3336 9260
      3337 9259 3336 9254 3333 9252 3332 9253
      3332 9252 3333 9250 3332 9249 3333 9248
      3332 9247 3332 9246
TIME...MOT...LOC 2107Z 217DEG 17KT 3330 9261 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

15

2 follow-up statements

302 
WWUS54 KSHV 072124
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
424 PM CDT Mon Jun 7 2021

ARC139-072145-
/O.CON.KSHV.TO.W.0026.000000T0000Z-210607T2145Z/
Union AR-
424 PM CDT Mon Jun 7 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR NORTH
CENTRAL UNION COUNTY...
    
At 423 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Calion, moving northeast at 15 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
north central Union County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3328 9254 3330 9263 3336 9262 3336 9260
      3337 9259 3336 9254 3333 9252 3332 9253
      3332 9252 3333 9250 3332 9249 3333 9248
      3332 9247 3332 9246
TIME...MOT...LOC 2123Z 222DEG 15KT 3334 9256 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

15

683 
WWUS54 KSHV 072144
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
444 PM CDT Mon Jun 7 2021

ARC139-072153-
/O.EXP.KSHV.TO.W.0026.000000T0000Z-210607T2145Z/
Union AR-
444 PM CDT Mon Jun 7 2021

...THE TORNADO WARNING FOR NORTH CENTRAL UNION COUNTY WILL EXPIRE AT
445 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
south central Arkansas.

Remember, a Severe Thunderstorm Warning still remains in effect for 
Union County until 515 PM. 

LAT...LON 3328 9254 3330 9263 3336 9262 3336 9260
      3337 9259 3336 9254 3333 9252 3332 9253
      3332 9252 3333 9250 3332 9249 3333 9248
      3332 9247 3332 9246
TIME...MOT...LOC 2143Z 217DEG 17KT 3341 9249 

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 10:18 PM CDT	Special Weather Statement	SHV	Little River, Sevier	42 min
Jun 7, 12:34 AM CDT	Special Weather Statement	SHV	Hempstead	41 min
Jun 7, 2:22 AM CDT	Flash Flood Warning	SHV	Hempstead, Howard, Little River, Sevier	4 hr
Jun 7, 3:04 AM CDT	Flash Flood Watch	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more	52 hr
Jun 7, 3:25 AM CDT	Special Weather Statement	SHV	Nevada	35 min
Jun 7, 4:00 AM CDT	Special Weather Statement	SHV	Howard	45 min
Jun 7, 4:33 AM CDT	Special Weather Statement	SHV	Hempstead	27 min
Jun 7, 3:04 PM CDT	Special Weather Statement	SHV	Columbia, Lafayette	56 min
Jun 7, 3:42 PM CDT	Special Weather Statement	SHV	Nevada	33 min
Jun 7, 3:52 PM CDT	Special Weather Statement	SHV	Columbia, Union	53 min
Jun 7, 4:21 PM CDT	Severe Thunderstorm Warning	SHV	Union	54 min
Jun 7, 4:45 PM CDT	Severe Thunderstorm Warning	SHV	Union	60 min

Nearby

Tornado Warnings in Arkansas, 2021 Every tornado warning in 2021 Tornadoes 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.