Alert archive / Louisiana / Tornado Warnings in 2012

Tornado Warning 4, NWS Shreveport, LA

January 25, 2012Natchitoches Parish, Sabine Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Jan 25, 2012, 2:05 PM CST for Natchitoches Parish, Sabine Parish, Louisiana. It was in force for 25 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: Jan 25, 2012, 2:05 PM CST (20:05 UTC)
Expired: Jan 25, 2012, 2:30 PM CST
In force: 25 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Natchitoches Parish, LA, Sabine Parish, LA

What was reported inside it

Time	Report	Where	Remark
Jan 25, 2:06 PM CST	TORNADO	Ssw Peason, LA	AN EF0 TORNADO TOUCHED DOWN IN SABINE PARISH NEAR PEASON ALONG HWY 118 AND MOVED EAST SOUTHEAST ALONG HWY 118. NUMEROUS TREES WERE SNAPPED AND UPROOTED ACROSS THE HWY OR ONTO POWERLINES. 3 CHICKEN HOUSES SUSTAINED MINOR ROOF DAMAGE TO ONE END AND A SMALL BARN

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
Jan 25, 7:56 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.1 hours before the alert went out and 128 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: 3 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 314 m²/s²
0-3 km storm-relative helicity: 484 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

394 
WFUS54 KSHV 252005
TORSHV
LAC069-085-252030-
/O.NEW.KSHV.TO.W.0004.120125T2005Z-120125T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
205 PM CST WED JAN 25 2012

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN NATCHITOCHES PARISH IN NORTHWEST LOUISIANA...
  EAST CENTRAL SABINE PARISH IN NORTHWEST LOUISIANA...

* UNTIL 230 PM CST

* AT 203 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  KISATCHIE...OR 14 MILES NORTHEAST OF ANACOCO...MOVING EAST NORTHEAST
  AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BELLWOOD...FLORA...GORUM...MELROSE...CLOUTIERVILLE AND CHOPIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 3153 9333 3168 9294 3165 9290 3162 9291
      3160 9284 3155 9277 3140 9287 3138 9291
      3135 9303 3136 9327
TIME...MOT...LOC 2004Z 240DEG 35KT 3144 9321

$$

03

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 9:41 AM CST	Flash Flood Watch	SHV	Bossier, Caddo, Claiborne, De Soto, Webster	11 hr
Jan 25, 10:06 AM CST	Areal Flood Advisory	SHV	Natchitoches, Ouachita, Winn	82 days
Jan 25, 11:32 AM CST	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	58 min
Jan 25, 1:12 PM CST	Tornado Warning	SHV	Natchitoches, Red River, Sabine	48 min
Jan 25, 1:17 PM CST	Tornado Warning	SHV	Sabine	28 min
Jan 25, 1:58 PM CST	Severe Thunderstorm Warning	SHV	Natchitoches, Sabine	47 min
Jan 25, 3:15 PM CST	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	60 min

Nearby

Tornado Warnings in Louisiana, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.