Alert archive / Alabama / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 224, NWS Birmingham, AL

October 23, 2007Calhoun County, Talladega County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Oct 23, 2007, 2:35 AM CDT for Calhoun County, Talladega County, Alabama. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 23, 2007, 2:35 AM CDT (07:35 UTC)
Expired: Oct 23, 2007, 3:00 AM CDT
In force: 25 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Calhoun County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 93 km from the middle of the area, began a volume at 07:36 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 23, 12:43 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 7.6 hours before the alert went out and 94 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 230735
SVRBMX
ALC015-121-230800-
/O.NEW.KBMX.SV.W.0224.071023T0735Z-071023T0800Z/

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CALHOUN COUNTY IN EAST CENTRAL ALABAMA...
  NORTH CENTRAL TALLADEGA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 300 AM CDT

* AT 231 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTH OF OHATCHEE...OR 7
  MILES NORTHEAST OF LINCOLN...AND MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  9 MILES NORTHWEST OF HOBSON CITY BY 245 AM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT TUESDAY MORNING
FOR EASTERN ALABAMA.

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

LAT...LON 3362 8579 3357 8609 3371 8615 3375 8608
      3378 8604 3379 8605 3383 8597
TIME...MOT...LOC 0735Z 244DEG 37KT 3370 8602

$$

17

2 follow-up statements

000 
WWUS54 KBMX 230745
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
245 AM CDT TUE OCT 23 2007

ALC121-230755-
/O.CAN.KBMX.SV.W.0224.000000T0000Z-071023T0800Z/
TALLADEGA AL-
245 AM CDT TUE OCT 23 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL TALLADEGA COUNTY
IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT TUESDAY MORNING
FOR EASTERN ALABAMA.

LAT...LON 3376 8591 3369 8585 3363 8580 3362 8583
      3360 8599 3372 8606 3375 8605 3376 8604
      3380 8594
TIME...MOT...LOC 0745Z 244DEG 37KT 3374 8591

$$

ALC015-230800-
/O.CON.KBMX.SV.W.0224.000000T0000Z-071023T0800Z/
CALHOUN AL-
245 AM CDT TUE OCT 23 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR SOUTHWESTERN CALHOUN COUNTY...

AT 240 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES NORTHWEST OF WEST
END-COBB TOWN...OR ABOUT 9 MILES WEST OF WEAVER...MOVING NORTHEAST AT
40 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT TUESDAY MORNING
FOR EASTERN ALABAMA.

LAT...LON 3376 8591 3369 8585 3363 8580 3362 8583
      3360 8599 3372 8606 3375 8605 3376 8604
      3380 8594
TIME...MOT...LOC 0745Z 244DEG 37KT 3374 8591

$$

17

000 
WWUS54 KBMX 230755
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
255 AM CDT TUE OCT 23 2007

ALC015-230805-
/O.EXP.KBMX.SV.W.0224.000000T0000Z-071023T0800Z/
CALHOUN AL-
255 AM CDT TUE OCT 23 2007

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CALHOUN COUNTY
EXPIRES AT 300 AM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CDT TUESDAY MORNING
FOR EASTERN ALABAMA.

LAT...LON 3376 8591 3369 8585 3363 8580 3362 8583
      3360 8599 3372 8606 3375 8605 3376 8604
      3380 8594
TIME...MOT...LOC 0755Z 244DEG 37KT 3378 8580

$$

17

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, 2 hours 35 minutes earlier.

Area forecast discussion, Oct 23, 12:00 AM CDT, 2 hours 35 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 23, 1:48 AM CDT, 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
148 AM CDT TUE OCT 23 2007

ALZ011>015-017>050-231300-
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-
148 AM CDT TUE OCT 23 2007

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

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORMS WITH ISOLATED TORNADOES ARE POSSIBLE ACROSS
AREAS EAST OF I-65 THROUGH 6 AM CDT. A LINE OF THUNDERSTORMS WILL
MOVE ACROSS EAST ALABAMA AND WILL PRODUCE PERIODS OF HEAVY
RAINFALL...AND LOCALIZED FLOODING.

.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
WILL BE NECESSARY THROUGH 6 AM CDT TUESDAY.

In the hours before

Local storm report, Oct 22, 11:23 PM CDT, 3 hours 12 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, 2 hours 54 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

Local storm report, Oct 23, 12:58 AM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1258 AM CDT TUE OCT 23 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.

1210 AM     TSTM WND DMG     BRENT                   32.94N 87.18W
10/23/2007                   BIBB               AL   EMERGENCY MNGR

            NUMEROUS TREES DOWN AS WELL AS POWER LINES AROUND THE
            BEAR CREEK ROAD AND COUNTY ROAD 5.

1235 AM     TSTM WND DMG     SELMA                   32.42N 87.03W
10/23/2007                   DALLAS             AL   EMERGENCY MNGR

            POWER POLES AND LINES DOWN AT THE 1600 BLOCK OF
            WASHINGTON STREET IN DOWNTOWN SELMA.

1235 AM     TSTM WND DMG     SELMA                   32.42N 87.03W
10/23/2007                   DALLAS             AL   EMERGENCY MNGR

            TREE DOWN ON A HOUSE AT 11 ACKERS ALLEY IN DOWNTOWN
            SELMA.

&&

JRA

Local storm report, Oct 23, 2:16 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BIRMINGHAM AL
216 AM CDT TUE OCT 23 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.

1210 AM     TSTM WND DMG     BRENT                   32.94N 87.18W
10/23/2007                   BIBB               AL   EMERGENCY MNGR

            NUMEROUS TREES DOWN AS WELL AS POWER LINES AROUND THE
            BEAR CREEK ROAD AND COUNTY ROAD 5.

1235 AM     TSTM WND DMG     SELMA                   32.42N 87.03W
10/23/2007                   DALLAS             AL   EMERGENCY MNGR

            POWER POLES AND LINES DOWN AT THE 1600 BLOCK OF
            WASHINGTON STREET IN DOWNTOWN SELMA.

1235 AM     TSTM WND DMG     SELMA                   32.42N 87.03W
10/23/2007                   DALLAS             AL   EMERGENCY MNGR

            TREE DOWN ON A HOUSE AT 11 ACKERS ALLEY IN DOWNTOWN
            SELMA.

0115 AM     TSTM WND DMG     3 W MOSSES              32.17N 86.73W
10/23/2007                   LOWNDES            AL   EMERGENCY MNGR

            NUMEROUS TREES DOWN BLOCKING ROADWAYS.

0115 AM     TSTM WND DMG     2 WNW BRAGGS            32.07N 86.83W
10/23/2007                   LOWNDES            AL   EMERGENCY MNGR

            NUMEROUS TREES DOWN ALONG COUNTY ROAD 45.

&&

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, 12:27 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas	33 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, 2:50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.