Alert archive / Alabama / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 79, NWS Birmingham, AL

April 25, 2010Cherokee County, Etowah County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 25, 2010, 12:40 AM CDT for Cherokee County, Etowah County, Alabama. It was in force for 33 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: Apr 25, 2010, 12:40 AM CDT (05:40 UTC)
Expired: Apr 25, 2010, 1:13 AM CDT
In force: 33 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Cherokee County, AL, Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 94 km from the middle of the area, began a volume at 05:39 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
Apr 24, 7:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.7 hours before the alert went out and 136 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: 1231 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 483 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 415 m²/s²
0-3 km storm-relative helicity: 438 m²/s²
Significant tornado parameter: 3.6
Supercell composite: 15.1

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 Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 25, 12:35 AM CDT, 5 minutes earlier.

Area forecast discussion, Apr 25, 12:35 AM CDT, 5 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Apr 24, 10:48 PM CDT, 1 hour 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1048 PM CDT SAT APR 24 2010

ALZ011>015-017>050-251100-
AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE-
CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE-
JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY-
PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA-
TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON-
1048 PM CDT SAT APR 24 2010

...RISK OF SEVERE THUNDERSTORMS AND TORNADOES TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...REMAINDER OF TONIGHT.

ALL MODES OF SEVERE WEATHER ARE POSSIBLE...INCLUDING
TORNADOES...DAMAGING WIND...LARGE HAIL...AND LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT WILL BE
NECESSARY OVERNIGHT.

In the hours before

Local storm report, Apr 24, 10:10 PM CDT, 2 hours 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1010 PM CDT SAT APR 24 2010

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

1007 PM     HAIL             PARRISH                 33.73N 87.28W
04/24/2010  E1.00 INCH       WALKER             AL   EMERGENCY MNGR

            REPORTED ON OLD PARRISH ROAD, ONE MILE SOUTH OF CORRIDOR
            X.

&&

LINHARES

Local storm report, Apr 24, 10:32 PM CDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1032 PM CDT SAT APR 24 2010

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

1020 PM     TSTM WND DMG     SW SUMITON              33.75N 87.05W
04/24/2010                   WALKER             AL   EMERGENCY MNGR

            STRUCTURAL DAMAGE, POWERLINES DOWN NEAR THE ASPHALT
            PLANT, TREES DOWN OVER RAILROAD TRACK. RIVER ROAD AND
            HORSE CREEK BLVD. POSSIBLE TORNADO.

&&

LINHARES

Special weather statement, Apr 24, 10:42 PM CDT, 1 hour 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1042 PM CDT SAT APR 24 2010

ALZ050-250430-
BARBOUR-
1042 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ALERT FOR BARBOUR COUNTY UNTIL 1130 PM CDT...

AT 1038 PM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING A CLUSTER
OF STRONG THUNDERSTORM IN SOUTHERN AND CENTRAL BARBOUR COUNTY. THESE
STORMS ARE MOVING NORTHEAST AT 55 MPH.

DIME SIZE HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING ARE EXPECTED
WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  LOUISVILLE.
  MILLERS FORD.
  CLAYTON.
  WHITE OAK.
  OSCO.
  LUGO.

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

Special weather statement, Apr 24, 10:59 PM CDT, 1 hour 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1059 PM CDT SAT APR 24 2010

ALZ048-250430-
RUSSELL-
1059 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ALERT FOR RUSSELL COUNTY UNTIL 1130 PM CDT...

AT 1055 PM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING A STRONG
THUNDERSTORM 6 MILES NORTHEAST OF HAWKINSVILLE...OR 15 MILES NORTH OF
EUFAULA...MOVING NORTHEAST AT 55 MPH.

NICKEL SIZE HAIL AND WINDS UP TO 30 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  FORT MITCHELL ACTIVITY CENTER.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY MORNING FOR
SOUTHEASTERN ALABAMA.

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

Special weather statement, Apr 24, 11:34 PM CDT, 1 hour 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1134 PM CDT SAT APR 24 2010

ALZ050-250500-
BARBOUR-
1134 PM CDT SAT APR 24 2010

...SIGNIFICANT WEATHER ALERT FOR BARBOUR COUNTY UNTIL MIDNIGHT CDT...

AT 1131 PM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING A STRONG
THUNDERSTORM NEAR OSCO...OR 7 MILES SOUTHWEST OF EUFAULA...MOVING
NORTHEAST AT 70 MPH.

NICKEL SIZE HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  EUFAULA.
  LAKEPOINT RESORT STATE PARK.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY MORNING FOR
SOUTHEASTERN ALABAMA.

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

Local storm report, Apr 25, 12:40 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1240 AM CDT SUN APR 25 2010

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

1010 PM     TSTM WND DMG     PARRISH                 33.73N 87.28W
04/24/2010                   WALKER             AL   TRAINED SPOTTER

            MAJOR STRUCTURAL DAMAGE AND POWERLINES DOWN ON MAIN
            STREET.

1012 PM     TSTM WND DMG     CORDOVA                 33.76N 87.19W
04/24/2010                   WALKER             AL   EMERGENCY MNGR

            CAR BLOWN OFF INTERSTATE 22 WEST AT MILE MARKER 69.
            INTERSTATE SIGNS BLOWN DOWN SAME LOCATION.

1015 PM     TSTM WND DMG     SIPSEY                  33.82N 87.09W
04/24/2010                   WALKER             AL   EMERGENCY MNGR

            EMPIRE ROAD AND FLOWER ROAD. MAJOR STRUCTURAL DAMAGE ALL
            FOUR CORNERS OF INTERSECTION.

1015 PM     TSTM WND DMG     EMPIRE                  33.81N 87.01W
04/24/2010                   WALKER             AL   TRAINED SPOTTER

            TREES DOWN ON MOBILE HOME ON DRUMMOND SWITCH ROAD.

1050 PM     TSTM WND DMG     3 NW WARRIOR            33.84N 86.85W
04/24/2010                   BLOUNT             AL   TRAINED SPOTTER

            TREES DOWN AND BUILDING DAMAGE. POSSIBLE TORNADO.

1055 PM     TSTM WND DMG     SW HAYDEN               33.92N 86.75W
04/24/2010                   BLOUNT             AL   EMERGENCY MNGR

            TREES AND POWERLINES DOWN WITH STRUCTURAL DAMAGE TO A
            RESIDENCE ON ARKADELPHIA ROAD NEAR SKYLINE DRIVE.
            POSSIBLE TORNADO.

&&

LINHARES

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:13 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Pickens	47 min
Apr 24, 7:16 PM CDT	Areal Flood Advisory	BMX	Fayette, Lamar, Pickens	3 hr
Apr 24, 7:24 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar	36 min
Apr 24, 7:44 PM CDT	Tornado Warning	BMX	Fayette, Pickens, Tuscaloosa	46 min
Apr 24, 7:48 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	27 min
Apr 24, 7:58 PM CDT	Flash Flood Warning	BMX	Fayette, Lamar, Pickens	3 hr
Apr 24, 8:07 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Macon, Russell	12 min
Apr 24, 8:09 PM CDT	Tornado Warning	BMX	Fayette, Pickens, Tuscaloosa	25 min
Apr 24, 8:15 PM CDT	Tornado Warning	BMX	Fayette, Walker	45 min
Apr 24, 8:50 PM CDT	Areal Flood Advisory	BMX	Walker	115 min
Apr 24, 9:11 PM CDT	Tornado Warning	BMX	Blount	49 min
Apr 24, 9:37 PM CDT	Tornado Warning	BMX	Greene, Sumter	20 min
Apr 24, 10:01 PM CDT	Tornado Warning Emergency	BMX	Walker	29 min
Apr 24, 10:04 PM CDT	Severe Thunderstorm Warning	BMX	Winston	26 min
Apr 24, 10:22 PM CDT	Tornado Warning Emergency	BMX	Blount, Jefferson, Walker	38 min
Apr 24, 10:54 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	26 min
Apr 24, 11:33 PM CDT	Tornado Warning	BMX	Etowah, St. Clair	42 min
Apr 24, 11:40 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Hale, Shelby, Tuscaloosa	26 min
Apr 24, 11:41 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	38 min
Apr 25, 12:07 AM CDT	Tornado Warning	BMX	Cherokee	9 min
Apr 25, 12:18 AM CDT	Tornado Warning	BMX	Cherokee	27 min
Apr 25, 4:02 AM CDT	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	13 hr
Apr 25, 7:41 AM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	66 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2010 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.