Alert archive / Arkansas / Tornado Warnings in 2015

Tornado Warning 73, NWS Shreveport, LA

December 27, 2015Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Dec 27, 2015, 3:12 PM CST for Union County, Arkansas. It was in force for 33 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: Dec 27, 2015, 3:12 PM CST (21:12 UTC)
Expired: Dec 27, 2015, 3:45 PM CST
In force: 33 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), 149 km from the middle of the area, began a volume at 21:11 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
Dec 27, 3:36 PM CST	TSTM WND GST 80	3 Ese Norphlet, AR	STRAIGHT LINE WINDS SNAPPED THE TRUNK OF A LARGE PINE TREE. A FEW OTHER SMALL LIMBS WERE ALSO DOWN. ALL DAMAGE POINTED DOWNSTREAM TO THE NORTHEAST. MAX WIND GUSTS ESTIMATED AT 80 MPH.
Dec 27, 3:38 PM CST	TSTM WND GST 60	3 E Norphlet, AR	STRAIGHT LINE WINDS BROKE NUMEROUS SMALL PINE LIMBS AND SNAPPED THE TRUNKS OF A FEW LARGE ROTTED TREES. ALL DAMAGE POINTED DOWNSTREAM TO THE NORTHEAST. MAX WIND SPEEDS ESTIMATED AT 60 MPH.

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
Dec 27, 2:47 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 9.2 hours before the alert went out and 140 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: 625 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 426 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

666 
WFUS54 KSHV 272112
TORSHV
ARC139-272145-
/O.NEW.KSHV.TO.W.0073.151227T2112Z-151227T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
312 PM CST SUN DEC 27 2015

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL UNION COUNTY IN SOUTH CENTRAL ARKANSAS...

* UNTIL 345 PM CST
    
* AT 312 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR WESSON...OR NEAR JUNCTION CITY...MOVING NORTH AT 40
  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...WESSON...CATESVILLE AND NEWELL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED
FOR THE SAME AREA.

&&

LAT...LON 3302 9262 3307 9279 3337 9269 3336 9268
      3336 9266 3337 9265 3336 9260 3337 9259
      3336 9254 3333 9252 3332 9252 3333 9250
      3332 9249 3333 9248
TIME...MOT...LOC 2112Z 196DEG 35KT 3311 9270 

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

$$

19

1 follow-up statement

122 
WWUS54 KSHV 272137 RRA
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
337 PM CST SUN DEC 27 2015

ARC139-272145-
/O.CON.KSHV.TO.W.0073.000000T0000Z-151227T2145Z/
UNION AR-
337 PM CST SUN DEC 27 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM CST FOR NORTH
CENTRAL UNION COUNTY...
    
AT 337 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR NORPHLET...MOVING NORTH AT 40 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 AND CALION. 

LAT...LON 3320 9254 3325 9273 3337 9269 3336 9268
      3336 9266 3337 9265 3336 9260 3337 9259
      3336 9254 3333 9252 3332 9252 3333 9250
      3332 9249 3333 9248
TIME...MOT...LOC 2137Z 196DEG 35KT 3335 9262 

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

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 27, 5:42 AM CST	Lake Wind Advisory	SHV	Miller	18 hr
Dec 27, 11:07 AM CST	Tornado Warning	SHV	Sevier	38 min
Dec 27, 12:17 PM CST	Flash Flood Warning	SHV	Little River, Sevier	12 hr
Dec 27, 12:46 PM CST	Flash Flood Warning	SHV	Howard	12 hr
Dec 27, 3:02 PM CST	Severe Thunderstorm Warning	SHV	Union	43 min
Dec 27, 3:29 PM CST	Tornado Warning	SHV	Hempstead, Lafayette, Nevada	31 min
Dec 27, 3:40 PM CST	Tornado Warning	SHV	Union	35 min
Dec 27, 3:52 PM CST	Tornado Warning Tornado observed	SHV	Hempstead, Nevada	23 min
Dec 27, 3:59 PM CST	Tornado Warning	SHV	Columbia, Lafayette	31 min
Dec 27, 4:10 PM CST	Tornado Warning	SHV	Union	35 min
Dec 27, 4:13 PM CST	Tornado Warning	SHV	Hempstead, Nevada	32 min
Dec 27, 4:26 PM CST	Tornado Warning	SHV	Columbia, Nevada	34 min
Dec 27, 4:35 PM CST	Tornado Warning	SHV	Howard, Sevier	40 min
Dec 27, 4:46 PM CST	Severe Thunderstorm Warning	SHV	Little River	59 min
Dec 27, 4:58 PM CST	Tornado Warning Tornado observed	SHV	Nevada	17 min
Dec 27, 5:22 PM CST	Tornado Warning	SHV	Miller	23 min
Dec 27, 5:29 PM CST	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Miller, Sevier	46 min
Dec 27, 5:42 PM CST	Tornado Warning	SHV	Miller	33 min

Nearby

Tornado Warnings in Arkansas, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.