Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 8, NWS Huntsville, AL

February 24, 2011Jackson County, Madison County, Marshall County, Alabama

NWS Huntsville, AL issued this tornado warning at Feb 24, 2011, 11:47 PM CST for Jackson County, Madison County, Marshall County, Alabama. It was in force for 28 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: Feb 24, 2011, 11:47 PM CST (05:47 UTC)
Expired: Feb 25, 2011, 12:15 AM CST
In force: 28 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Jackson County, AL, Madison County, AL, Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 24 km from the middle of the area, began a volume at 05:49 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
Feb 24, 11:55 PM CST	TSTM WND DMG	Owens Crossroads, AL	POWER OUTAGES REPORTED IN OWENS CROSSROADS ON HAMPTON ROAD.
Feb 25, 12:06 AM CST	TSTM WND DMG	2 N Owens Crossroads, AL	MAJOR SUBSTATION HAS BEEN TAKEN OUT IN HAMPTON COVE. REPORTS OF LARGE AND LONG LIVED POWER FLASH IN THE AREA. LARGE POWER OUTAGE IN SOUTHEAST QUADRANT OF MADISON COUNTY.

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
Feb 24, 8:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.8 hours before the alert went out and 163 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: 17 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 538 m²/s²
0-3 km storm-relative helicity: 629 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

251 
WFUS54 KHUN 250547
TORHUN
ALC071-089-095-250615-
/O.NEW.KHUN.TO.W.0008.110225T0547Z-110225T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1147 PM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MADISON COUNTY IN NORTH CENTRAL ALABAMA...
  SOUTHWESTERN JACKSON COUNTY IN NORTHEAST ALABAMA...
  NORTH CENTRAL MARSHALL COUNTY IN NORTHEAST ALABAMA...

* UNTIL 1215 AM CST

* AT 1144 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR OWENS
  CROSSROADS...OR ABOUT 11 MILES SOUTHEAST OF HUNTSVILLE...MOVING
  EAST AT 60 MPH.

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  LIM ROCK.
  LARKINSVILLE.
  SCOTTSBORO.
  MARTINTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU
SEE OR HEAR THE TORNADO...IT MAY BE TOO LATE. TAKE COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3486 8587 3460 8591 3450 8647 3476 8645
TIME...MOT...LOC 0547Z 256DEG 53KT 3466 8637

$$
SL

1 follow-up statement

129 
WWUS54 KHUN 250601
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1201 AM CST FRI FEB 25 2011

ALC089-095-250609-
/O.CAN.KHUN.TO.W.0008.000000T0000Z-110225T0615Z/
MARSHALL AL-MADISON AL-
1201 AM CST FRI FEB 25 2011

...THE TORNADO WARNING FOR SOUTHEASTERN MADISON AND NORTH CENTRAL
MARSHALL COUNTIES IS CANCELED...

WEATHER SERVICE DOPPLER RADAR INDICATED THE THUNDERSTORM THAT 
PROMPTED THE TORNADO WARNING HAD MOVED OUT OF THE COUNTY. THEREFORE 
THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
MARSHALL COUNTY UNTIL 1215 AM CST FOR DESTRUCTIVE WINDS IN EXCESS OF 
70 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.

LAT...LON 3478 8589 3478 8588 3462 8590 3458 8614
      3461 8614 3461 8630 3479 8629 3486 8587
TIME...MOT...LOC 0559Z 256DEG 53KT 3470 8616

$$

ALC071-250615-
/O.CON.KHUN.TO.W.0008.000000T0000Z-110225T0615Z/
JACKSON AL-
1201 AM CST FRI FEB 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1215 AM CST FOR CENTRAL
JACKSON COUNTY...

AT 1158 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR LIM ROCK...OR
ABOUT 8 MILES WEST OF SCOTTSBORO...MOVING EAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LARKINSVILLE...SKYLINE...HOLLYWOOD...MARTINTOWN AND FACKLER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES AT NIGHT ARE ESPECIALLY DANGEROUS. DO NOT WAIT UNTIL YOU
SEE OR HEAR THE TORNADO...IT MAY BE TOO LATE. TAKE COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3478 8589 3478 8588 3462 8590 3458 8614
      3461 8614 3461 8630 3479 8629 3486 8587
TIME...MOT...LOC 0559Z 256DEG 53KT 3470 8616

$$

SL

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 24, 9:09 PM CST	Special Weather Statement	HUN	Colbert	51 min
Feb 24, 9:29 PM CST	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale	46 min
Feb 24, 9:55 PM CST	Tornado Warning	HUN	Colbert, Franklin	35 min
Feb 24, 10:10 PM CST	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence, Limestone	35 min
Feb 24, 10:15 PM CST	Tornado Warning	HUN	Franklin	30 min
Feb 24, 10:21 PM CST	Tornado Warning	HUN	Colbert, Lauderdale, Lawrence	24 min
Feb 24, 10:40 PM CST	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone, Madison, Morgan	50 min
Feb 24, 10:44 PM CST	Tornado Warning	HUN	Lauderdale, Lawrence, Limestone	31 min
Feb 24, 11:04 PM CST	Severe Thunderstorm Warning	HUN	Cullman	41 min
Feb 24, 11:20 PM CST	Tornado Warning	HUN	Cullman	25 min
Feb 24, 11:21 PM CST	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison, Marshall, Morgan	24 min
Feb 24, 11:23 PM CST	Tornado Warning	HUN	Marshall, Morgan	37 min
Feb 24, 11:40 PM CST	Severe Thunderstorm Warning	HUN	Cullman, Jackson, Madison, Marshall, Morgan	35 min
Feb 24, 11:56 PM CST	Tornado Warning	HUN	Jackson	22 min
Feb 25, 12:09 AM CST	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	36 min
Feb 25, 12:09 AM CST	Tornado Warning	HUN	DeKalb, Jackson, Marshall	36 min
Feb 25, 12:14 AM CST	Tornado Warning	HUN	DeKalb, Jackson	20 min

Nearby

Tornado Warnings in Alabama, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.