Alert archive / Alabama / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 365, NWS Birmingham, AL

July 5, 2009Elmore County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 5, 2009, 12:24 PM CDT for Elmore County, Alabama. It was in force for 51 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: Jul 5, 2009, 12:24 PM CDT (17:24 UTC)
Expired: Jul 5, 2009, 1:15 PM CDT
In force: 51 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Elmore County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.4 hours before the alert went out and 88 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: 1314 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1045 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

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 Jul 5, 11:15 AM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Jul 5, 11:15 AM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, Jul 5, 5:21 AM CDT, 7 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
521 AM CDT SUN JUL 5 2009

ALZ011>015-017>050-061021-
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-
521 AM CDT SUN JUL 5 2009

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

.DAY ONE...TODAY AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AREA-WIDE THROUGH
10 PM TONIGHT. THE HIGHER LIKELIHOOD OF SEVERE STORMS DEVELOPING
WILL BE ACROSS THE NORTHERN SECTIONS THIS MORNING...THEN AREA-
WIDE THIS AFTERNOON AND EVENING. A COLD FRONT WILL MOVE SOUTHWARD
ACROSS THE NORTHERN HALF OF THE AREA. NUMEROUS TO WIDESPREAD SHOWERS
AND THUNDERSTORMS ARE EXPECTED TO DEVELOP. THE PRIMARY THREAT WILL
BE DAMAGING WINDS. IN ADDITION...WHERE STORMS PERSIST FOR ANY LENGTH
OF TIME...LOCALLY HEAVY RAIN WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

STRONG THUNDERSTORMS WILL BE POSSIBLE AREA-WIDE ON MONDAY AND
THEN ACROSS THE SOUTHERN SECTIONS ON TUESDAY AS A WEAK
BOUNDARY CONTINUES TO SLOWLY MOVE SOUTHWARD. SCATTERED SHOWERS AND
THUNDERSTORMS WILL DEVELOP DURING THE PEAK HEATING HOURS. THESE
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE
REQUIRED TODAY AND TONIGHT.

KSL

In the hours before

Special weather statement, Jul 5, 7:13 AM CDT, 5 hours 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
713 AM CDT SUN JUL 5 2009

ALZ017-051315-
BLOUNT-
713 AM CDT SUN JUL 5 2009

...SIGNIFICANT WEATHER ALERT FOR BLOUNT COUNTY UNTIL 815 AM CDT...

AT 711 AM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING A STRONG
THUNDERSTORM NEAR NECTAR...OR 5 MILES WEST OF CLEVELAND...MOVING EAST
AT 35 MPH.

WINDS UP TO 35 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  NECTAR.
  CLEVELAND.
  EASLEY.
  ONEONTA.
  HIGHLAND LAKE.

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

KSL

Special weather statement, Jul 5, 10:48 AM CDT, 1 hour 36 minutes before

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Special weather statement, Jul 5, 11:36 AM CDT, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1136 AM CDT SUN JUL 5 2009

ALZ019-021-027>029-051715-
CALHOUN-CLAY-CLEBURNE-RANDOLPH-TALLADEGA-
1136 AM CDT SUN JUL 5 2009

...SIGNIFICANT WEATHER ALERT FOR CALHOUN...CLAY...CLEBURNE...RANDOLPH
AND TALLADEGA COUNTIES UNTIL 1215 PM CDT...

AT 1134 AM CDT...THE NATIONAL WEATHER SERVICE IS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM JACKSONVILLE TO
WALDO...MOVING EAST AT 35 MPH.

WINDS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS.

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.

12/SIRMON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:36 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar	19 min
Jul 5, 2:26 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter, Tuscaloosa	49 min
Jul 5, 2:53 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	52 min
Jul 5, 6:09 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Elmore, Tallapoosa	51 min
Jul 5, 6:24 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Lee, Macon, Tallapoosa	51 min
Jul 5, 6:38 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Lee, Tallapoosa	22 min
Jul 5, 6:56 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Lee, Macon	49 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2009 Every severe thunderstorm warning in 2009

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.