Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 182, NWS Jackson, MS

April 5, 2012Ashley County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Apr 5, 2012, 4:23 AM CDT for Ashley County, Arkansas. It was in force for 52 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 5, 2012, 4:23 AM CDT (09:23 UTC)
Expired: Apr 5, 2012, 5:15 AM CDT
In force: 52 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Ashley County, AR

The radar

The Little Rock radar (KLZK), 176 km from the middle of the area, began a volume at 09:23 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 5, 4:45 AM CDT	HAIL 1.75	Hamburg, AR

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 5, 1:53 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 9.4 hours before the alert went out and 192 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: 439 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1639 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

868 
WUUS54 KJAN 050923
SVRJAN
ARC003-051015-
/O.NEW.KJAN.SV.W.0182.120405T0923Z-120405T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
423 AM CDT THU APR 5 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ASHLEY COUNTY IN SOUTHEAST ARKANSAS...
  THIS INCLUDES THE CITY OF HAMBURG...

* UNTIL 515 AM CDT

* AT 424 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  WEST OF OLD MILO MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OLD MILO BY 435 AM CDT...
  FOUNTAIN HILL AND HAMBURG BY 440 AM CDT...
  SNYDER BY 500 AM CDT...
  PORTLAND BY 505 AM CDT...
  MONTROSE BY 510 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. WHILE NOT IMMEDIATELY
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS
A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CDT THURSDAY MORNING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3321 9212 3322 9209 3323 9210 3328 9204
      3328 9202 3331 9198 3334 9200 3338 9197
      3340 9186 3339 9146 3323 9146 3320 9160
      3316 9211
TIME...MOT...LOC 0924Z 258DEG 34KT 3327 9201

$$

JA

2 follow-up statements

496 
WWUS54 KJAN 050927
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
427 AM CDT THU APR 5 2012

ARC003-051015-
/O.CON.KJAN.SV.W.0182.000000T0000Z-120405T1015Z/
ASHLEY AR-
427 AM CDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT
FOR NORTHERN ASHLEY COUNTY...

AT 427 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
WEST OF OLD MILO MOVING EAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  OLD MILO BY 435 AM CDT...
  FOUNTAIN HILL AND HAMBURG BY 440 AM CDT...
  SNYDER BY 500 AM CDT...
  PORTLAND BY 505 AM CDT...
  MONTROSE BY 510 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

THE HAIL BEING PRODUCED BY THIS SEVERE THUNDERSTORM WILL LIKELY
DAMAGE CARS AND ROOFS. PEOPLE WHO ARE OUT OF DOORS SHOULD MOVE INSIDE
A STRUCTURE IMMEDIATELY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CDT THURSDAY MORNING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3321 9212 3322 9209 3323 9210 3328 9204
      3328 9202 3331 9198 3334 9200 3338 9197
      3340 9186 3339 9146 3323 9146 3320 9160
      3316 9211
TIME...MOT...LOC 0927Z 258DEG 34KT 3327 9198

$$

270 
WWUS54 KJAN 050940
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
440 AM CDT THU APR 5 2012

ARC003-051015-
/O.CON.KJAN.SV.W.0182.000000T0000Z-120405T1015Z/
ASHLEY AR-
440 AM CDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT
FOR NORTHERN ASHLEY COUNTY...

AT 441 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
HAMBURG MOVING EAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SNYDER BY 455 AM CDT...
  PORTLAND AND MONTROSE BY 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

THE HAIL BEING PRODUCED BY THIS SEVERE THUNDERSTORM WILL LIKELY
DAMAGE CARS AND ROOFS. PEOPLE WHO ARE OUT OF DOORS SHOULD MOVE INSIDE
A STRUCTURE IMMEDIATELY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM CDT THURSDAY MORNING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3321 9212 3322 9209 3323 9210 3328 9204
      3328 9202 3331 9198 3334 9200 3338 9197
      3340 9186 3339 9146 3323 9146 3320 9160
      3316 9211
TIME...MOT...LOC 0941Z 276DEG 37KT 3324 9182

$$

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 5, 1:08 AM CDT	Special Weather Statement	JAN	Ashley	32 min
Apr 5, 1:29 AM CDT	Special Weather Statement	JAN	Ashley	31 min
Apr 5, 2:02 AM CDT	Special Weather Statement	JAN	Chicot	28 min
Apr 5, 2:37 AM CDT	Severe Thunderstorm Warning	JAN	Chicot	53 min
Apr 5, 4:12 AM CDT	Special Weather Statement	JAN	Ashley	63 min
Apr 5, 4:47 AM CDT	Severe Thunderstorm Warning	JAN	Ashley	58 min
Apr 5, 5:10 AM CDT	Severe Thunderstorm Warning	JAN	Chicot	50 min
Apr 5, 5:30 AM CDT	Severe Thunderstorm Warning	JAN	Chicot	60 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2012 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.