Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 199, NWS Huntsville, AL

June 21, 20115 counties in Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 21, 2011, 3:26 PM CDT for 5 counties in Alabama. It was in force for 49 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 21, 2011, 3:26 PM CDT (20:26 UTC)
Expired: Jun 21, 2011, 4:15 PM CDT
In force: 49 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL

The radar

The Columbus AFB radar (KGWX), 114 km from the middle of the area, began a volume at 20:29 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.4 hours before the alert went out and 180 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: 1519 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -80 m²/s²
0-3 km storm-relative helicity: -76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 21, 2:31 PM CDT, 55 minutes earlier.

Area forecast discussion, Jun 21, 2:31 PM CDT, 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
231 PM CDT TUE JUN 21 2011

.DISCUSSION...WENT MAINLY WITH GFS FOR THIS FCST PACKAGE.

STACKED CLOSED LOW OVER THE UPPER MIDWEST WILL SLOWLY MOVE EAST THRU
THE END OF THE WORK WEEK. THIS WILL CONTINUE TO PUMP MOISTURE AND
DISTURBANCES ACROSS THE TN VALLEY WITH THE CHC OF SHRA/TSRA. AT THE
SFC...A LOW WAS OVER IOWA WITH A CDFNT THRU WRN MO AND A WARM FRONT
ACROSS THE GREAT LAKES.

FOR TONIGHT MAY SEE A FEW STRONG TO SEVERE TSRA FOR THE REST OF THE
AFTN/EARLY EVENING DUE TO DAYTIME HEATING AND A VERY MOIST/UNSTABLE
ATMOSPHERE. THE MAIN THREAT OF SVR WX WILL BE DAMAGING WIND GUSTS
ALONG WITH HVY RAIN. OTHERWISE UNDER MOSTLY CLOUDY SKIES EXPECT
ANOTHER WARM MUGGY NIGHT WITH LOWS IN THE LOW/MID 70S. ONE THING TO
NOTE IS THAT NAM SHOWS THE CHC OF SHRA/TSRA TAPERING OFF TONIGHT
WHILE GFS KEEPS THE PCPN GOING THRU THE OVERNIGHT HOURS. GFS MAY BE
OVER DOING THE PCPN THREAT TONIGHT A LITTLE...BUT BASED ON CURRENT
STLT/RADAR TRENDS AND HPC PCPN OUTLOOK...GFS LOOKS LIKE THE WAY TO
GO ATTM. RAINFALL AMOUNTS TONIGHT COULD BE UP TO ONE INCH ESPECIALLY
OVER NWRN AL.

FOR WEDNESDAY MRNG THE THREAT OF HEAVY RAIN/TSRA SHOULD BE ON GOING BUT
SHOULD BEGIN TO TAPER OFF BY LATE AFTN/EARLY EVENING. WILL KEEP
LIKELY POPS FOR THE MRNG/AFTN HOURS ON WEDNESDAY BUT WILL DROP TO LOW
CHC POPS BY WEDNESDAY NIGHT.

REST OF THE FCST (THURSDAY THRU TUESDAY)...NOT A LOT CONFIDENCE
DURING THIS TIMEFRAME SO WILL KEEP LOW POPS GOING THRU THE PERIOD.
THERE MIGHT BE A SMALL BREAK IN THE CHC OF PCPN ON THURSDAY. GFS
SHOWS ANOTHER FAIRLY STRONG S/W MOVING ACROSS THE CWA ON
FRIDAY...THUS WILL GO WITH HIGH CHC POPS. NEXT WEEKEND AND INTO THE
BEGINNING OF THE NEXT WORK WEEK STILL LOOKS UNSETTLED AS A CDFNT IS
PROGGED TO STALL OUT OVER TN. AGAIN NOT REAL CONFIDANT WITH THIS
SCENARIO BUT WILL KEEP LOWS POPS IN.

&&

.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE    73  88  69  90  71 /  60  60  30  30  40
SHOALS        74  88  70  91  70 /  60  60  30  30  40
VINEMONT      73  86  69  89  70 /  60  60  30  30  40
FAYETTEVILLE  73  86  68  88  68 /  50  60  30  30  40
ALBERTVILLE   74  87  69  89  68 /  50  60  30  30  40
FORT PAYNE    69  85  67  87  67 /  50  60  30  30  40

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

07

Hazardous weather outlook, Jun 21, 12:20 PM CDT, 3 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1220 PM CDT TUE JUN 21 2011

ALZ001>010-016-TNZ076-096-097-220500-
LAUDERDALE-COLBERT-FRANKLIN
AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-MARSHALL-JACKSON-DEKALB-CULLMAN-
MOORE-LINCOLN-FRANKLIN TN-
1220 PM CDT TUE JUN 21 2011

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

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

SCATTERED THUNDERSTORMS WILL AFFECT THE CENTRAL TENNESSEE VALLEY
THROUGH TONIGHT...AS WEAK UPPER LEVEL DISTURBANCES TRAVERSE ACROSS
THE REGION. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS...SMALL HAIL AND LOCALLY HEAVY RAINFALL. A FEW LOCALLY SEVERE
STORMS ARE POSSIBLE LATE THIS AFTERNOON AND THIS EVENING...WITH THE
PRIMARY THREAT BEING BRIEF DAMAGAING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

AN UNSETTLED WEATHER PATTERN WITH A CHANCE FOR SHOWERS AND
THUNDERSTORMS EACH DAY WILL CONTINUE THROUGH THE WEEKEND. THE
STRONGER STORMS DURING THIS PERIOD WILL BE CAPABLE OF GUSTY WINDS...
FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. A FEW STORMS COULD
BECOME SEVERE...WITH THE MAIN THREAT DAMAGING WINDS. THUNDERSTORMS
WILL BE MOST NUMEROUS WEDNESDAY AND WEDNESDAY EVENING AS A COLD
FRONT APPROACHES THE REGION. HIGH ATMOSPHERIC MOISTURE LEVELS COULD
LEAD TO LOCALLY HEAVY RAINFALL...WITH ISOLATED INSTANCES OF FLASH
FLOODING AN ADDITIONAL THREAT.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Jun 21, 1:11 PM CDT, 2 hours 15 minutes before

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

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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, Jun 21, 1:42 PM CDT, 1 hour 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
142 PM CDT TUE JUN 21 2011

ALZ006-TNZ096-211915-
LINCOLN-MADISON-
142 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR LINCOLN AND MADISON COUNTIES
UNTIL 215 PM CDT...

AT 136 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR HAZEL GREEN...OR NEAR MERIDIANVILLE...MOVING
NORTHEAST AT 30 MPH.

PEA SIZE HAIL IS EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  LINCOLN.
  CRYSTAL SPRINGS...FLINTVILLE.
  KELSO.

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

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 3516 8654 3507 8631 3484 8656 3490 8667
TIME...MOT...LOC 1842Z 213DEG 25KT 3493 8656

Special weather statement, Jun 21, 3:07 PM CDT, 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
307 PM CDT TUE JUN 21 2011

ALZ008-010-212045-
DE KALB-MARSHALL-
307 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR DEKALB AND MARSHALL COUNTIES
UNTIL 345 PM CDT...

AT 306 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM ARAB TO HYATT TO
ALTOONA...MOVING NORTHEAST AT 35 MPH.

PEA SIZE HAIL...WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND HEAVY DOWNPOURS ARE EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  UNION GROVE...RABBIT TOWN.
  GUNTERSVILLE...ALBERTVILLE.
  HEBRON...HUSTLEVILLE.
  MCVILLE.
  WHITON...PAINTER.
  GRANT.

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

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 3423 8643 3429 8646 3431 8658 3439 8658
      3452 8638 3451 8633 3456 8630 3461 8622
      3456 8614 3452 8614 3452 8609 3448 8609
      3448 8604 3444 8597 3420 8593 3418 8619
      3410 8631
TIME...MOT...LOC 2008Z 233DEG 29KT 3434 8647 3423 8631
          3402 8627

DJN

Special weather statement, Jun 21, 3:13 PM CDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
313 PM CDT TUE JUN 21 2011

ALZ006-212100-
MADISON-
313 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR MADISON COUNTY UNTIL 400 PM
CDT...

AT 312 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR MADISON...MOVING NORTHEAST AT 35 MPH.

PEA SIZE HAIL...WINDS UP TO 50 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...AND HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  HARVEST...HUNTSVILLE.
  NORMAL...TONEY.
  GLADSTONE...MERIDIANVILLE.
  MOORES MILL.
  HAZEL GREEN...FISK.
  NEW MARKET.

THE GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREES...TREE
LIMBS...AND POWERLINES. SEEK SAFE SHELTER UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3500 8631 3462 8669 3468 8679 3483 8679
      3500 8668
TIME...MOT...LOC 2013Z 216DEG 31KT 3475 8671

DJN

Local storm report, Jun 21, 3:23 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
323 PM CDT TUE JUN 21 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0314 PM     TSTM WND DMG     DOUGLAS                 34.17N 86.32W
06/21/2011                   MARSHALL           AL   LAW ENFORCEMENT

            FIFFTY TO SIXTY MPH WINDS WERE REPORTED AND BLEW OFF SOME
            AWNING AT A SCHOOL.

&&

KWEBER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 11:19 AM CDT	Special Weather Statement	HUN	Madison	26 min
Jun 21, 1:11 PM CDT	Special Weather Statement	HUN	DeKalb	34 min
Jun 21, 2:55 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	35 min
Jun 21, 3:07 PM CDT	Special Weather Statement	HUN	Marshall	38 min
Jun 21, 3:13 PM CDT	Special Weather Statement	HUN	Madison	47 min
Jun 21, 3:19 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	26 min
Jun 21, 3:29 PM CDT	Special Weather Statement	HUN	Cullman	46 min
Jun 21, 3:39 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	36 min
Jun 21, 3:42 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	33 min
Jun 21, 3:46 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Marshall	29 min
Jun 21, 4:06 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, DeKalb, Madison, Marshall, Morgan	24 min
Jun 21, 4:07 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	38 min
Jun 21, 4:17 PM CDT	Severe Thunderstorm Warning	HUN	Madison	28 min
Jun 21, 4:26 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Madison, Marshall, Morgan	34 min
Jun 21, 4:50 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Madison	40 min
Jun 21, 4:50 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	25 min
Jun 21, 1:22 PM CDT	Special Weather Statement	HUN	Franklin	23 min
Jun 21, 1:42 PM CDT	Special Weather Statement	HUN	Lincoln	33 min
Jun 21, 3:54 PM CDT	Special Weather Statement	HUN	Franklin, Moore	36 min
Jun 21, 5:29 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	16 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.