Alert archive / Alabama / Tornado Warnings in 2010

Tornado Warning 21, NWS Huntsville, AL

May 1, 2010Colbert County, Lauderdale County, Alabama

NWS Huntsville, AL issued this tornado warning at May 1, 2010, 2:33 PM CDT for Colbert County, Lauderdale County, Alabama. It was in force for 42 min. 4 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: May 1, 2010, 2:33 PM CDT (19:33 UTC)
Expired: May 1, 2010, 3:15 PM CDT
In force: 42 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Colbert County, AL, Lauderdale County, AL

The radar

The Columbus AFB radar (KGWX), 117 km from the middle of the area, began a volume at 19:34 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
May 1, 3:07 PM CDT	HAIL 1	Waterloo, AL	QUARTER-SIZED HAIL REPORTED IN WATERLOO.
May 1, 3:10 PM CDT	TSTM WND DMG	4 Nne Margerum, AL	A TREE WAS BLOWN DOWN AT RIVERTON ROSE TRAIL.
May 1, 3:14 PM CDT	FUNNEL CLOUD	1 Nnw Cherokee, AL	TRAINED SPOTTER LOCATED NORTH OF CHEROKEE REPORTED FUNNEL CLOUD.
May 1, 3:15 PM CDT	HAIL 1	Cherokee, AL	QUARTER INCH HAIL WAS REPORTED JUST NORTH OF CHEROKEE.

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
May 1, 9:52 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 7.6 hours before the alert went out and 175 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: 6 J/kg
Mixed-layer CIN: -380 J/kg
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

121 
WFUS54 KHUN 011933
TORHUN
ALC033-077-012015-
/O.NEW.KHUN.TO.W.0021.100501T1933Z-100501T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
233 PM CDT SAT MAY 1 2010

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN COLBERT COUNTY IN NORTHWEST ALABAMA...
  WESTERN LAUDERDALE COUNTY IN NORTHWEST ALABAMA...

* UNTIL 315 PM CDT

* AT 233 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO NEAR   
  LEEDY IN MISSISSIPPI. THIS STORM IS MOVING EAST AT 40 MPH. 

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...
  MALONE.
  MARGERUM.
  RIVERTON.
  WRIGHT.
  OAKLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SATURDAY AFTERNOON
FOR NORTHWESTERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3502 8776 3477 8771 3471 8812 3481 8811
      3489 8810 3492 8814 3497 8817 3499 8819
      3501 8820 3502 8818
TIME...MOT...LOC 1933Z 254DEG 34KT 3477 8834

$$
JLL

3 follow-up statements

449 
WWUS54 KHUN 011949
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
249 PM CDT SAT MAY 1 2010

ALC033-077-012015-
/O.CON.KHUN.TO.W.0021.000000T0000Z-100501T2015Z/
LAUDERDALE AL-COLBERT AL-
249 PM CDT SAT MAY 1 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
NORTHWESTERN COLBERT AND WESTERN LAUDERDALE COUNTIES...

AT 248 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS STORM WAS LOCATED 
JUST NORTH OF IUKA...MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MARGERUM...RIVERTON...MT HESTER...WATERLOO...CHEROKEE...WRIGHT...
THREET...OAKLAND AND CLOVERDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SATURDAY AFTERNOON
FOR NORTHWESTERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3502 8776 3477 8771 3471 8812 3481 8811
      3489 8810 3492 8814 3497 8817 3499 8819
      3501 8820 3502 8818
TIME...MOT...LOC 1948Z 253DEG 31KT 3481 8819

$$

JLL

069 
WWUS54 KHUN 012001
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
301 PM CDT SAT MAY 1 2010

ALC033-077-012015-
/O.CON.KHUN.TO.W.0021.000000T0000Z-100501T2015Z/
LAUDERDALE AL-COLBERT AL-
301 PM CDT SAT MAY 1 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
NORTHWESTERN COLBERT AND WESTERN LAUDERDALE COUNTIES...

AT 300 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION.  THIS STORM WAS LOCATED
NEAR RIVERTON...OR ABOUT 7 MILES NORTHEAST OF IUKA...MOVING EAST AT 
40 MPH. THIS STORM HAS A HISTORY OF PRODUCING DAMAGE IN TISHOMINGO 
COUNTY.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WATERLOO...CHEROKEE...WRIGHT...THREET...OAKLAND AND CLOVERDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SATURDAY AFTERNOON
FOR NORTHWESTERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3502 8776 3477 8771 3471 8812 3481 8811
      3489 8810 3492 8814 3497 8817 3499 8819
      3501 8820 3502 8818
TIME...MOT...LOC 2000Z 251DEG 37KT 3486 8805

$$

JLL

285 
WWUS54 KHUN 012010
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
310 PM CDT SAT MAY 1 2010

ALC033-077-012015-
/O.CON.KHUN.TO.W.0021.000000T0000Z-100501T2015Z/
LAUDERDALE AL-COLBERT AL-
310 PM CDT SAT MAY 1 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
NORTHWESTERN COLBERT AND WESTERN LAUDERDALE COUNTIES...

AT 308 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS STORM WAS LOCATED 
JUST SOUTHEAST OF RIVERTON...MOVING NORTHEAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
THREET...OAKLAND AND CLOVERDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT 
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SATURDAY AFTERNOON
FOR NORTHWESTERN ALABAMA AND CENTRAL TENNESSEE.

&&

LAT...LON 3502 8776 3477 8771 3471 8812 3481 8811
      3489 8810 3492 8814 3497 8817 3499 8819
      3501 8820 3502 8818
TIME...MOT...LOC 2008Z 246DEG 30KT 3488 8800

$$

JLL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 3:12 PM CDT	Tornado Warning	HUN	Colbert, Lauderdale	36 min
May 1, 3:46 PM CDT	Flash Flood Warning	HUN	Colbert, Lauderdale	40 min

Nearby

Tornado Warnings in Alabama, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.