Alert archive / Alabama / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 100, NWS Birmingham, AL

June 23, 2004Bibb County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 23, 2004, 12:28 PM CDT for Bibb County, Alabama. It was in force for 32 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: Jun 23, 2004, 12:28 PM CDT (17:28 UTC)
Expired: Jun 23, 2004, 1:00 PM CDT
In force: 32 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

County Bibb County, AL

The radar

The Birmingham radar (KBMX), 45 km from the middle of the area, began a volume at 17:28 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.5 hours before the alert went out and 45 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: 290 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 878 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

722 
WUUS54 KBMX 231728
SVRBHM
ALC007-231800-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1228 PM CDT WED JUN 23 2004

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL BIBB COUNTY IN ALABAMA
  THIS INCLUDES THE CITY OF BRENT

* UNTIL 100 PM CDT

* AT 1222 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 11 MILES WEST OF BRENT...AND   
MOVING EAST AROUND 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CENTREVILLE.

STRONG DAMAGING WIND WILL KNOCK DOWN TREES AND POWER LINES...AND
DAMAGE BUILDINGS AND HOMES. TAKE COVER NOW. FIND SUBSTANTIAL
SHELTER...AVOID WINDOWS...VEHICLES AND MOBILE HOMES.

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

LAT...LON 3300 8732 3305 8731 3311 8702 3310 8695
      3305 8690 3292 8690 3287 8723 3287 8731
      3289 8732 3290 8740 3300 8741

$$

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 Jun 23, 11:40 AM CDT, 48 minutes earlier.

Area forecast discussion, Jun 23, 11:40 AM CDT, 48 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1140 AM CDT WED JUN 23 2004

.UPDATE...
WEAK SURFACE BOUNDARY NORTH OF THE STATE IS ALLOWING PLENTY OF
MOISTURE STREAM INTO THE AREA.  SHOWERS AND THUNDERSTORMS HAVE
ALREADY ENTERED THE STATE THIS MORNING ACROSS NORTHWEST SECTIONS OF
THE CWA.  EXPECT THIS TREND TO CONTINUE THROUGHOUT THE DAY.
THUS HAVE LOWERED AFTERNOON HIGH TEMPERATURES IN THE WEST AND
RAISED POPS TO CATEGORICAL.  ALSO...DECIDED TO RAISE TEMPERATURES
IN SOUTHEASTERN SECTIONS AS THERE ARE SOME BREAKS IN CLOUD COVER.
&&

.BMX WATCHES/WARNINGS/ADVISORIES...NONE.
&&

KH/99

Hazardous weather outlook, Jun 23, 7:00 AM CDT, 5 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
700 AM CDT WED JUN 23 2004

ALZ011>015-017>050-241200-
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-
700 AM CDT WED JUN 23 2004

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

.DAY ONE (TODAY AND TONIGHT)...

THE STATE OF ALABAMA IS UNDER THE INFLUENCE OF ABUNDANT GULF
MOISTURE AND A STATIONARY FRONT TO THE WEST.

WITH PLENTY OF MOISTURE IN PLACE ACROSS THE AREA TODAY AND TONIGHT...
NUMEROUS SHOWERS AND A CHANCE OF THUNDERSTORMS ARE EXPECTED.
A FEW STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL...
ESPECIALLY ACROSS THE CENTRAL PORTION OF THE FORECAST AREA.

.DAYS TWO THROUGH SEVEN (THURSDAY THROUGH TUESDAY)...

THE CONTINUATION OF HEAVY RAINFALL IS POSSIBLE AGAIN ON THURSDAY AND
THURSDAY NIGHT. BY FRIDAY MORNING ISOLATED FLOODING PROBLEMS COULD
OCCUR.  HEAVY RAIN AND FLOODING POTENTIAL WILL NEED TO BE EVALUATED
FURTHER AS THIS EVENT NEARS.

OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 7:29 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	16 min
Jun 23, 4:40 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	35 min
Jun 23, 5:16 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	44 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2004 Every severe thunderstorm warning in 2004

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.