Alert archive / Arkansas / Tornado Warnings in 2018

Tornado Warning 76, NWS Shreveport, LA

April 14, 2018Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Apr 14, 2018, 2:01 AM CDT for Union County, Arkansas. It was in force for 29 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: Apr 14, 2018, 2:01 AM CDT (07:01 UTC)
Expired: Apr 14, 2018, 2:30 AM CDT
In force: 29 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Union County, AR

The radar

The Shreveport radar (KSHV), 155 km from the middle of the area, began a volume at 07:02 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
Apr 14, 2:03 AM CDT	TORNADO	7 Ese El Dorado, AR	AN EF-1 TORNADO TOUCHED DOWN ALONG NICK SPRINGS ROAD JUST EAST OF SPENCER LANE. IT CONTINUED TO THE NORTHEAST WHERE IT INTERSECTED LAWSON ROAD AND DID CONSIDERABLE TREE DAMAGE AND DAMAGED THE ROOFS OF A NUMBER OF HOMES...MOBILE HOMES...AND BARNS. THE TORNADO C

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
Apr 13, 9:53 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 7.0 hours before the alert went out and 147 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: 1539 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 13.1

Open this sounding in Storm Lab

The text

As transmitted.

658 
WFUS54 KSHV 140701
TORSHV
ARC139-140730-
/O.NEW.KSHV.TO.W.0076.180414T0701Z-180414T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
201 AM CDT SAT APR 14 2018

The National Weather Service in Shreveport has issued a

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

* Until 230 AM CDT
    
* At 200 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Lawson, or near El Dorado, moving northeast at 45
  mph.

  HAZARD...Tornado and quarter size hail. 

  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. 

* Locations impacted include...
  El Dorado, Norphlet, Calion, Urbana, Lawson, Hillsboro, Kenova and
  Pigeon Hill.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3308 9253 3325 9271 3337 9270 3336 9266
      3337 9264 3336 9260 3337 9259 3336 9255
      3332 9252 3333 9250 3332 9249 3333 9248
      3330 9246 3329 9247 3327 9244 3328 9238
      3330 9235 3328 9235 3328 9234
TIME...MOT...LOC 0700Z 231DEG 39KT 3320 9257 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

1 follow-up statement

532 
WWUS54 KSHV 140708
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
208 AM CDT SAT APR 14 2018

ARC139-140730-
/O.CON.KSHV.TO.W.0076.000000T0000Z-180414T0730Z/
Union AR-
208 AM CDT SAT APR 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR CENTRAL
UNION COUNTY...
    
At 208 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Lawson, or 10 miles east of El Dorado, moving
northeast at 45 mph.

HAZARD...Tornado and quarter size hail. 

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. 

Locations impacted include...
El Dorado, Calion, Urbana, Lawson, Hillsboro and Pigeon Hill. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3318 9264 3337 9258 3336 9255 3332 9252
      3333 9250 3332 9249 3333 9248 3330 9246
      3329 9247 3327 9244 3328 9238 3330 9235
      3328 9235 3328 9234 3308 9253
TIME...MOT...LOC 0708Z 233DEG 40KT 3324 9249 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:51 PM CDT	Tornado Warning	SHV	Howard, Little River, Sevier	25 min
Apr 13, 8:15 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	45 min
Apr 13, 8:53 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	29 min
Apr 13, 9:27 PM CDT	Special Weather Statement	SHV	Howard, Sevier	48 min
Apr 13, 10:19 PM CDT	Special Weather Statement	SHV	Hempstead, Howard, Little River, Sevier	41 min
Apr 13, 11:30 PM CDT	Severe Thunderstorm Warning	SHV	Miller	45 min
Apr 13, 11:35 PM CDT	Special Weather Statement	SHV	Little River, Sevier	40 min
Apr 14, 12:15 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette, Miller	45 min
Apr 14, 12:46 AM CDT	Tornado Warning	SHV	Columbia	29 min
Apr 14, 12:59 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Union	46 min
Apr 14, 1:11 AM CDT	Tornado Warning	SHV	Columbia, Union	34 min
Apr 14, 1:13 AM CDT	Special Weather Statement	SHV	Union	17 min
Apr 14, 1:28 AM CDT	Tornado Warning	SHV	Columbia, Union	32 min
Apr 14, 1:30 AM CDT	Tornado Warning	SHV	Columbia, Union	33 min
Apr 14, 1:45 AM CDT	Severe Thunderstorm Warning	SHV	Union	75 min
Apr 14, 4:24 AM CDT	Lake Wind Advisory	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more	15 hr

Nearby

Tornado Warnings in Arkansas, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.