Alert archive / Alabama / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 367, NWS Birmingham, AL

June 5, 1999Jefferson County, St. Clair County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 5, 1999, 4:02 AM CDT for Jefferson County, St. Clair County, Alabama. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 5, 1999, 4:02 AM CDT (09:02 UTC)
Expired: Jun 5, 1999, 5:05 AM CDT
In force: 63 min
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Jefferson County, AL, St. Clair County, AL

The radar

The Birmingham radar (KBMX), 54 km from the middle of the area, began a volume at 09:04 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
Jun 5, 4:30 AM CDT	Thunderstorm Wind 50	Birmingham, AL	Trees were blown down on 5th Ave South in Birmingham.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 5, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.0 hours before the alert went out and 53 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: 3062 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1126 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 050902
SVRBHM
ALC073-115-051005-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
402 AM CDT SAT JUN 5 1999

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED...A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON COUNTY...IN CENTRAL ALABAMA...
  ST. CLAIR COUNTY...IN CENTRAL ALABAMA...

* UNTIL 505 AM CDT.

* AT 400 AM CDT... WEATHER RADAR SHOWED A LINE OF SEVERE
THUNDERSTORMS...EXTENDING FROM NEAR ARKADELPHIA...EASTWARD TO NEAR
HIGHLAND LAKE.  THIS LINE WAS MOVING SOUTH AT 30 MPH...AND WILL
BE AFFECTING MOST OF JEFFERSON AND ST CLAIR COUNTIES THROUGH 5:00 AM.

LARGE HAIL AND WIND DAMAGE HAS BEEN REPORTED IN CULLMAN AND ST CLAIR
COUNTIES DURING THE PAST HOUR WITH THESE STORMS.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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, Jun 5, 2:34 AM CDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM
234 AM CDT SAT JUN 05 1999

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

0210 AM    ANTIOCH                   AL   .75 INCH HAIL
06/05/99   LAUDERDALE                     DIME SIZE HAIL FELL IN
                                          ANTIOCH.  REPORTED BY EMA.

0215 AM    FLORENCE                  AL   .75 INCH HAIL
06/05/99   LAUDERDALE                     DIME SIZE HAIL FELL IN
                                          FLORENCE. REPORTED BY EMA.

0223 AM    FLORENCE                  AL   .75 INCH HAIL
06/05/99   LAUDERDALE                     DIME SIZE HAIL REPORTED
                                          NEAR FLORENCE. REPORTED BY
                                          EMA.

Special weather statement, Jun 5, 3:38 AM CDT, 24 minutes before

ALZ001>003-005-006-009-050910-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
338 AM CDT SAT JUN 5 1999

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN ALABAMA

   ...LAUDERDALE... COLBERT... FRANKLIN... LIMESTONE... MADISON
   ...JACKSON

THE THREAT OF SEVERE WEATHER HAS MOVED SOUTH OF THE AREA BUT SCATTERED
SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE THROUGH THE EARLY MORNING
HOURS.

z

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 1:37 AM CDT	Severe Thunderstorm Warning	BMX	Lauderdale, Limestone	63 min
Jun 5, 1:54 AM CDT	Severe Thunderstorm Warning	BMX	Madison	61 min
Jun 5, 2:18 AM CDT	Severe Thunderstorm Warning	BMX	Colbert, Lawrence	47 min
Jun 5, 2:43 AM CDT	Severe Thunderstorm Warning	BMX	Marshall, Morgan	62 min
Jun 5, 2:48 AM CDT	Severe Thunderstorm Warning	BMX	Franklin	47 min
Jun 5, 2:52 AM CDT	Severe Thunderstorm Warning	BMX	Madison	33 min
Jun 5, 2:57 AM CDT	Severe Thunderstorm Warning	BMX	Cullman	48 min
Jun 5, 3:09 AM CDT	Severe Thunderstorm Warning	BMX	Blount	46 min
Jun 5, 3:41 AM CDT	Severe Thunderstorm Warning	BMX	Cullman	44 min
Jun 5, 3:49 AM CDT	Severe Thunderstorm Warning	BMX	Blount	46 min
Jun 5, 4:11 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun	49 min
Jun 5, 4:20 AM CDT	Severe Thunderstorm Warning	BMX	Walker	45 min
Jun 5, 4:21 AM CDT	Severe Thunderstorm Warning	BMX	Talladega	49 min
Jun 5, 4:30 AM CDT	Severe Thunderstorm Warning	BMX	Shelby	45 min
Jun 5, 5:08 PM CDT	Severe Thunderstorm Warning	BMX	Russell	47 min
Jun 5, 5:19 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	66 min
Jun 5, 5:37 PM CDT	Severe Thunderstorm Warning	BMX	Bullock	63 min
Jun 5, 6:27 PM CDT	Severe Thunderstorm Warning	BMX	Talladega	48 min
Jun 5, 6:46 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton	49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.