Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 211, NWS Huntsville, AL

June 22, 2011Lawrence County, Limestone County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 22, 2011, 3:25 PM CDT for Lawrence County, Limestone County, Morgan County, Alabama. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 22, 2011, 3:25 PM CDT (20:25 UTC)
Expired: Jun 22, 2011, 4:15 PM CDT
In force: 50 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Lawrence County, AL, Limestone County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 96 km from the middle of the area, began a volume at 20:28 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 22, 1:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.4 hours before the alert went out and 159 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: 983 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 765 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 3:19 PM CDT, 6 minutes earlier.

Area forecast discussion, Jun 22, 3:19 PM CDT, 6 minutes before

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Hazardous weather outlook, Jun 22, 12:00 PM CDT, 3 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1200 PM CDT WED JUN 22 2011

ALZ001>010-016-TNZ076-096-097-230500-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
1200 PM CDT WED JUN 22 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF
SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

NUMEROUS TO WIDESPREAD THUNDERSTORMS WILL BE LIKELY THROUGH THE
EVENING PERIOD...AS A SERIES OF UPPER LEVEL DISTURBANCES MOVE ACROSS
THE AREA. THE SEVERE WEATHER THREAT THIS AFTERNOON AND EARLY EVENING
WILL DEPEND ON THE AMOUNT OF CLOUD COVER. SOME STORMS COULD BE
STRONG TO SEVERE...WITH DAMAGING WINDS AND HAIL. RUNOFF FROM
EXCESSIVE RAINFALL MAY ALSO CAUSE A FEW INSTANCES OF FLASH
FLOODING...ESPECIALLY ACROSS AREAS THAT RECEIVE HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

A CHANCE FOR THUNDERSTORMS WILL CONTINUE THROUGH THE WEEKEND AND
EARLY NEXT WEEK...AS AN UNSETTLED WEATHER PATTERN PREVAILS ACROSS
THE SOUTHERN STATES. FRIDAY SHOULD BE THE MOST ACTIVE DAY DURING
THIS PERIOD.

MAIN THREATS POISED BY THE STRONGER STORMS INCLUDE GUSTY
WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. A FEW STORMS
COULD BECOME SEVERE...WITH THE MAIN THREAT DAMAGING WINDS AND
MARGINALLY SEVERE HAIL. LOCALLY HEAVY RAINFALL...ESPECIALLY IF
STORMS REPEATEDLY AFFECT THE SAME AREA...COULD LEAD TO INSTANCES OF
FLASH FLOODING.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL...IN
SUPPORT OF SEVERE WEATHER OPERATIONS...MAY BE NEEDED THIS AFTERNOON.

In the hours before

Special weather statement, Jun 22, 2:11 PM CDT, 1 hour 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
211 PM CDT WED JUN 22 2011

ALZ001-002-222015-
COLBERT-LAUDERDALE-
211 PM CDT WED JUN 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR COLBERT AND LAUDERDALE COUNTIES
UNTIL 315 PM CDT...

AT 206 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CLUSTER OF STRONG THUNDERSTORMS AROUND CHEROKEE...OR 14 MILES EAST
OF IUKA...MOVING EAST AT 35 MPH.

WINDS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  PRIDE LANDING.
  OAKLAND...THREET.
  CLOVERDALE...SHEFFIELD.
  UNDERWOOD-PETERSVILLE...FLORENCE.
  SAINT FLORIAN...ZIP CITY.
  KILLEN.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3481 8737 3479 8742 3472 8743 3470 8811
      3482 8808 3488 8810 3489 8810 3489 8811
      3500 8814 3500 8726
TIME...MOT...LOC 1910Z 257DEG 32KT 3483 8790

Special weather statement, Jun 22, 2:17 PM CDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
217 PM CDT WED JUN 22 2011

ALZ007>010-016-222000-
CULLMAN-DE KALB-JACKSON-MARSHALL-MORGAN-
217 PM CDT WED JUN 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR CULLMAN...DEKALB...JACKSON...
MARSHALL AND MORGAN COUNTIES UNTIL 300 PM CDT...

AT 212 PM CDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A LINE OF STRONG BROKEN THUNDERSTORMS FROM TRENTON TO 5 MILES NORTH
OF CHIGGER HILL TO FAIRVIEW...OR ALONG A BROKEN LINE EXTENDING FROM
14 MILES SOUTHEAST OF BRIDGEPORT TO 9 MILES WEST OF RAINSVILLE TO 11
MILES WEST OF ARAB...MOVING EAST AT 20 MPH.

WINDS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  BEATY CROSSROADS...IDER.
  POWELL.
  HENAGAR.
  HOLLY POND.
  BAILEYTON.
  SYLVANIA...HULACO.

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO THE
STORM TO BE STRUCK BY LIGHTNING. SEEK SAFE SHELTER IMMEDIATELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3428 8574 3422 8584 3419 8617 3413 8631
      3426 8643 3426 8651 3421 8655 3402 8695
      3440 8691 3451 8615 3487 8558 3453 8551
TIME...MOT...LOC 1915Z 263DEG 15KT 3482 8552 3447 8600
          3431 8668

Special weather statement, Jun 22, 2:21 PM CDT, 1 hour 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
221 PM CDT WED JUN 22 2011

ALZ003-004-222015-
FRANKLIN-LAWRENCE-
221 PM CDT WED JUN 22 2011

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN AND LAWRENCE COUNTIES
UNTIL 315 PM CDT...

AT 218 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR RED BAY...MOVING EAST AT 35 MPH.

WINDS UP TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...AND HEAVY
DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  DEMPSEY...HODGES.
  BELGREEN...DUKETON.
  ROCKWOOD.
  RUSSELLVILLE...ISBELL.
  PLEASANT RIDGE...RUSSELLVILLE.
  THARPTOWN.

THIS THUNDERSTORM COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
WEDNESDAY EVENING FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

&&

LAT...LON 3451 8814 3457 8760 3457 8753 3458 8751
      3461 8750 3473 8732 3436 8726 3432 8815
TIME...MOT...LOC 1921Z 257DEG 30KT 3443 8806

Special weather statement, Jun 22, 2:51 PM CDT, 34 minutes before

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Special weather statement, Jun 22, 2:54 PM CDT, 31 minutes before

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Local storm report, Jun 22, 3:22 PM CDT, 3 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 8:41 AM CDT	Special Weather Statement	HUN	Lawrence, Limestone, Morgan	64 min
Jun 22, 11:42 AM CDT	Special Weather Statement	HUN	Cullman, Madison	63 min
Jun 22, 1:15 PM CDT	Special Weather Statement	HUN	DeKalb, Marshall	60 min
Jun 22, 2:11 PM CDT	Special Weather Statement	HUN	Lauderdale	64 min
Jun 22, 2:17 PM CDT	Special Weather Statement	HUN	Cullman, DeKalb, Marshall	43 min
Jun 22, 2:21 PM CDT	Special Weather Statement	HUN	Franklin, Lawrence	54 min
Jun 22, 2:51 PM CDT	Special Weather Statement	HUN	Lawrence	54 min
Jun 22, 2:54 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	66 min
Jun 22, 3:10 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence	35 min
Jun 22, 3:38 PM CDT	Special Weather Statement	HUN	Cullman, Morgan	22 min
Jun 22, 3:46 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	44 min
Jun 22, 4:10 PM CDT	Special Weather Statement	HUN	Madison	50 min
Jun 22, 5:10 PM CDT	Special Weather Statement	HUN	DeKalb	35 min
Jun 22, 4:13 PM CDT	Special Weather Statement	HUN	Franklin	32 min
Jun 22, 4:39 PM CDT	Special Weather Statement	HUN	Franklin	36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.