Alert archive / Alabama / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 213, NWS Birmingham, AL

May 6, 1999St. Clair County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 6, 1999, 3:46 AM CDT for St. Clair County, Alabama. It was in force for 49 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: May 6, 1999, 3:46 AM CDT (08:46 UTC)
Expired: May 6, 1999, 4:35 AM CDT
In force: 49 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County St. Clair County, AL

The watch it was issued in

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

Issued	Product	Office	Lasted
May 6, 12:30 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 8.8 hours before the alert went out and 74 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: 1931 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 763 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 395 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 21.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, May 5, 11:05 PM CDT, 4 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM
1105 PM CDT WED MAY 05 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0931 PM    COURTLAND                 AL   WIND DAMAGE
05/05/99   LAWRENCE                       TREES KNOCKED DOWN IN
                                          COURTLAND AND DIME SIZE
                                          HAIL. REPORTED BY HAM
                                          RADIO.

0950 PM    MOULTON                   AL   .75 INCH HAIL
05/05/99   LAWRENCE                       DIME SIZE HAIL 3 MILES
                                          NORTH OF MOULTON. REPORTED
                                          BY HAM RADIO.

0950 PM                              AL   WIND DAMAGE
05/05/99   LAMAR                          TREES KNOCKED DOWN IN
                                          NORTHEASTERN LAMAR COUNTY
                                          NEAR THE MARION COUNTY
                                          BORDER. REPORTED BY EMA.

0955 PM    ATHENS                    AL   WIND DAMAGE
05/05/99   LIMESTONE                      TREES AND POWER LINES
                                          KNOCKED DOWN A FEW MILES
                                          SOUTH OF ATHENS.  REPORTED
                                          BY EMA.

1010 PM                              AL   WIND DAMAGE
05/05/99   MARION                         SEVERAL LARGE TREE LIMBS
                                          BROKEN OFF ON HIGHWAY 19 4
                                          MILES NORTH OF THE LAMAR
                                          COUNTY LINE.  REPORTED BY
                                          EMA.

1014 PM    HUNTSVILLE                AL   WIND DAMAGE
05/05/99   MADISON                        TREES AND POWER LINES
                                          KNOCKED DOWN IN
                                          HUNTSVILLE. REPORTED BY
                                          HSV 911.

Special weather statement, May 6, 1:02 AM CDT, 2 hours 44 minutes before

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Special weather statement, May 6, 1:58 AM CDT, 1 hour 48 minutes before

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Special weather statement, May 6, 2:03 AM CDT, 1 hour 43 minutes before

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Special weather statement, May 6, 2:13 AM CDT, 1 hour 33 minutes before

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Special weather statement, May 6, 3:19 AM CDT, 27 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 8:06 PM CDT	Severe Thunderstorm Warning	BMX	Colbert, Lauderdale	49 min
May 5, 8:28 PM CDT	Severe Thunderstorm Warning	BMX	Franklin	47 min
May 5, 8:50 PM CDT	Severe Thunderstorm Warning	BMX	Marion	45 min
May 5, 8:53 PM CDT	Severe Thunderstorm Warning	BMX	Colbert, Lauderdale	47 min
May 5, 9:14 PM CDT	Severe Thunderstorm Warning	BMX	Franklin, Lawrence	61 min
May 5, 9:24 PM CDT	Severe Thunderstorm Warning	BMX	Limestone	51 min
May 5, 9:30 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	50 min
May 5, 9:53 PM CDT	Severe Thunderstorm Warning	BMX	Morgan	62 min
May 5, 9:58 PM CDT	Severe Thunderstorm Warning	BMX	Madison	62 min
May 5, 10:02 PM CDT	Severe Thunderstorm Warning	BMX	Cullman, Winston	63 min
May 5, 10:32 PM CDT	Severe Thunderstorm Warning	BMX	Jackson	63 min
May 5, 11:03 PM CDT	Severe Thunderstorm Warning	BMX	Madison	32 min
May 5, 11:25 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	30 min
May 5, 11:54 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	31 min
May 6, 12:06 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	64 min
May 6, 12:06 AM CDT	Severe Thunderstorm Warning	BMX	Cullman, Winston	64 min
May 6, 12:19 AM CDT	Flash Flood Warning	BMX	Morgan	3 hr
May 6, 12:27 AM CDT	Flash Flood Warning	BMX	Madison	3 hr
May 6, 12:37 AM CDT	Severe Thunderstorm Warning	BMX	Pickens	48 min
May 6, 12:52 AM CDT	Severe Thunderstorm Warning	BMX	Jackson	48 min
May 6, 12:57 AM CDT	Severe Thunderstorm Warning	BMX	DeKalb	63 min
May 6, 1:11 AM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	64 min
May 6, 1:36 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	64 min
May 6, 1:47 AM CDT	Flash Flood Warning	BMX	DeKalb	3 hr
May 6, 1:51 AM CDT	Severe Thunderstorm Warning	BMX	Blount	64 min
May 6, 2:16 AM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	44 min
May 6, 3:10 AM CDT	Severe Thunderstorm Warning	BMX	Perry	65 min
May 6, 4:15 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun	50 min
May 6, 4:38 AM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Cleburne	62 min
May 6, 5:31 AM CDT	Severe Thunderstorm Warning	BMX	Clay, Randolph	49 min
May 6, 6:12 AM CDT	Severe Thunderstorm Warning	BMX	Chambers, Tallapoosa	63 min
May 6, 6:21 AM CDT	Severe Thunderstorm Warning	BMX	Randolph	49 min
May 6, 6:23 AM CDT	Severe Thunderstorm Warning	BMX	Marengo	52 min
May 6, 6:32 AM CDT	Severe Thunderstorm Warning	BMX	Perry	48 min
May 6, 7:17 AM CDT	Severe Thunderstorm Warning	BMX	Elmore	63 min
May 6, 7:52 AM CDT	Severe Thunderstorm Warning	BMX	Dallas, Lowndes	63 min
May 6, 8:22 AM CDT	Severe Thunderstorm Warning	BMX	Chambers	33 min
May 6, 8:45 AM CDT	Severe Thunderstorm Warning	BMX	Montgomery	45 min
May 6, 9:54 AM CDT	Severe Thunderstorm Warning	BMX	Lee	46 min
May 6, 12:23 PM CDT	Tornado Warning	BMX	Barbour	47 min
May 6, 6:38 PM CDT	Severe Thunderstorm Warning	BMX	Chattahoochee, Stewart	32 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1999 Every severe thunderstorm warning in 1999

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.