Alert archive / Alabama / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 218, NWS Birmingham, AL

October 23, 2007Autauga County, Chilton County, Dallas County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Oct 23, 2007, 12:27 AM CDT for Autauga County, Chilton County, Dallas County, Alabama. It was in force for 33 min. 3 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: Oct 23, 2007, 12:27 AM CDT (05:27 UTC)
Expired: Oct 23, 2007, 1:00 AM CDT
In force: 33 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Autauga County, AL, Chilton County, AL, Dallas County, AL

The radar

The Birmingham radar (KBMX), 58 km from the middle of the area, began a volume at 05:27 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
Oct 23, 12:35 AM CDT	TSTM WND DMG	Selma, AL	POWER POLES AND LINES DOWN AT THE 1600 BLOCK OF WASHINGTON STREET IN DOWNTOWN SELMA.
Oct 23, 12:35 AM CDT	TSTM WND DMG	Selma, AL	POWER POLES AND LINES DOWN AT THE 1600 BLOCK OF WASHINGTON STREET IN DOWNTOWN SELMA. TREE DAMAGE TO A HOME IN SELMA. NUMEROUS TREES DOWN ALONG HWYS 22 AND 219.
Oct 23, 12:38 AM CDT	TSTM WND DMG	1 S Pooles Crossroads, AL	A FEW TREES WERE BLOWN DOWN NEAR THE INTERSECTION OF COUNTY ROAD 24 AND COUNTY ROAD 37.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this severe thunderstorm warning; the first came 8 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 22, 11:14 PM CDT	Tornado Watch	SPC	89 min

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.5 hours before the alert went out and 58 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: 464 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBMX 230527
SVRBMX
ALC001-021-047-230600-
/O.NEW.KBMX.SV.W.0218.071023T0527Z-071023T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1227 AM CDT TUE OCT 23 2007

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN AUTAUGA COUNTY IN CENTRAL ALABAMA...
  CENTRAL CHILTON COUNTY IN CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF CLANTON...
  NORTHEASTERN DALLAS COUNTY IN SOUTH CENTRAL ALABAMA...
  THIS INCLUDES THE CITIES OF...SELMONT-WEST SELMONT...SELMA...

* UNTIL 100 AM CDT

* AT 1223 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 6 MILES NORTHEAST OF
  SELMA...AND MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DAWSON MILL BY 1240 AM CDT...
  STANTON AND 6 MILES NORTHWEST OF BILLINGSLEY BY 1245 AM CDT...
  6 MILES SOUTHEAST OF MAPLESVILLE BY 1250 AM CDT...
  ISABELLA AND POOLES CROSSROADS BY 1255 AM CDT...
  6 MILES WEST OF CLANTON BY 100 AM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM CDT TUESDAY MORNING
FOR SOUTHEASTERN ALABAMA.

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3272 8690 3283 8690 3284 8688 3287 8688
      3286 8660 3223 8691 3223 8715
TIME...MOT...LOC 0527Z 205DEG 25KT 3250 8692

$$

KSL

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 Oct 23, 12:00 AM CDT, 27 minutes earlier.

Area forecast discussion, Oct 23, 12:00 AM CDT, 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1200 AM CDT TUE OCT 23 2007

.UPDATE...FOR AVIATION DISCUSSION.

&&

.DISCUSSION...

MADE JUST SOME MINOR ADJUSTMENTS TO TONIGHTS FORECAST AS THE ONGOING
FORECAST HAS A GOOD HANDLE ON THE CURRENT FORECAST.

MAIN CONCERN FOR THE NIGHT WILL BE THE EXTENT OF THE PRIMED AIRMASS
THAT HAS BEEN OVER SOUTHERN ALABAMA THIS AFTERNOON. LOOKING AT THE
LATEST CHARTS IT APPEARS AT THIS TIME THAT THE JUICIEST AIRMASS WILL
REMAIN SOUTH OF THE FORECAST AREA...BUT THERE MAY BE A FEW STORMS
THAT DRIFT INTO THE SOUTHERN PORTIONS OF THE AREA BEFORE DISSIPATING.
WILL NEED TO KEEP AN EYE ON THINGS...ESPECIALLY OVERNIGHT AS THE
SYSTEM MOVES FURTHER EAST. EXPECTING THE FRONT TO BE NEAR THE AL/MS
STATE LINE BY 12Z TOMORROW. HEAVIEST RAIN LOOKS TO BE SETTING UP
ALONG THE I-20/I-59 CORRIDOR. UPDATES SENT.

&&

.AVIATION...06Z TAF DISCUSSION.
WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE TO
OVER-SPREAD THE AREA FROM THE WEST.  EXPECT IFR CONDITIONS AT ALL
SITES THE REMAINDER OF THE PERIOD THROUGH 00Z. MVFR CEILINGS WILL
HANG ON ACROSS THROUGH 6Z. SOUTHERLY WINDS 10 TO 15 MPH CAN BE
EXPECTED.

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
AL...NONE.

&&

Hazardous weather outlook, Oct 22, 7:03 PM CDT, 5 hours 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
703 PM CDT MON OCT 22 2007

ALZ011>015-017>050-240000-
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-
703 PM CDT MON OCT 22 2007

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

.DAY ONE...TONIGHT.

HEAVY RAINFALL...AND LOCALIZED FLOODING...WILL BE POSSIBLE
OVERNIGHT...GENERALLY WEST OF A LINE FROM BIRMINGHAM TO SELMA AS A
BROAD AREA OF PRECIPITATION MOVES NORTHEASTWARD ACROSS THE REGION.
RAINFALL ACCUMULATIONS OF 1 TO 3 INCHES CAN BE EXPECTED BY MORNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY.

STRONG THUNDERSTORMS AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE
TUESDAY. A COLD FRONT WILL SLOWLY MOVE ACROSS CENTRAL ALABAMA FROM
WEST TO EAST AS ABUNDANT MOISTURE REMAINS IN PLACE ACROSS THE AREA.

NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Oct 22, 11:23 PM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1123 PM CDT MON OCT 22 2007

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

1052 PM     TSTM WND DMG     NEWBERN                 32.59N 87.54W
10/22/2007                   HALE               AL   EMERGENCY MNGR

            NUMEROUS TREES DOWN WITH SOME ON HOUSES ALONG COUNTY ROAD
            16. POSSIBLE TORNADO.

&&

JRA

Local storm report, Oct 22, 11:41 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1141 PM CDT MON OCT 22 2007

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

1052 PM     TSTM WND DMG     NEWBERN                 32.59N 87.54W
10/22/2007                   HALE               AL   EMERGENCY MNGR

            *** 1 INJ *** NUMEROUS TREES DOWN WITH SOME ON HOUSES
            ALONG COUNTY ROAD 16. 15 HOUSES DAMAGED...3 TRAILERS
            OVERTURNED...NUMEROUS DOWNED POWER LINES. POSSIBLE
            TORNADO.

&&

JRA

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 22, 9:33 PM CDT	Tornado Warning	BMX	Marengo	27 min
Oct 22, 9:59 PM CDT	Tornado Warning	BMX	Hale, Marengo, Perry	31 min
Oct 22, 10:30 PM CDT	Tornado Warning	BMX	Marengo	45 min
Oct 22, 10:44 PM CDT	Tornado Warning	BMX	Hale, Perry	31 min
Oct 22, 11:16 PM CDT	Tornado Warning	BMX	Bibb, Hale, Perry	29 min
Oct 22, 11:25 PM CDT	Tornado Warning	BMX	Dallas, Perry	35 min
Oct 23, 12:00 AM CDT	Tornado Warning	BMX	Bibb, Chilton, Dallas, Perry	45 min
Oct 23, 12:44 AM CDT	Severe Thunderstorm Warning	BMX	Chilton, Shelby	31 min
Oct 23, 1:00 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas, Lowndes	45 min
Oct 23, 1:11 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Elmore, Shelby, Talladega	49 min
Oct 23, 1:25 AM CDT	Tornado Warning	BMX	Chilton, Coosa	35 min
Oct 23, 1:33 AM CDT	Tornado Warning	BMX	St. Clair, Shelby	27 min
Oct 23, 1:39 AM CDT	Tornado Warning	BMX	Lowndes, Montgomery	36 min
Oct 23, 1:54 AM CDT	Tornado Warning	BMX	Elmore	36 min
Oct 23, 1:59 AM CDT	Tornado Warning	BMX	Talladega	31 min
Oct 23, 2:06 AM CDT	Severe Thunderstorm Warning	BMX	Coosa, Tallapoosa	39 min
Oct 23, 2:16 AM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	29 min
Oct 23, 2:27 AM CDT	Tornado Warning	BMX	Coosa, Tallapoosa	20 min
Oct 23, 2:33 AM CDT	Tornado Warning	BMX	Lowndes, Montgomery	27 min
Oct 23, 2:35 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Talladega	25 min
Oct 23, 2:50 AM CDT	Severe Thunderstorm Warning	BMX	Tallapoosa	40 min
Oct 23, 1:47 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Lee, Macon, Russell	28 min
Oct 23, 2:15 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Russell	30 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2007 Every severe thunderstorm warning in 2007

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.