Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 464, NWS Birmingham, AL

June 13, 1998Lamar County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 13, 1998, 4:55 AM CDT for Lamar County, Alabama. It was in force for 50 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 13, 1998, 4:55 AM CDT (09:55 UTC)
Expired: Jun 13, 1998, 5:45 AM CDT
In force: 50 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Lamar County, AL

What was reported inside it

Time	Report	Where	Remark
Jun 13, 5:15 AM CDT	Thunderstorm Wind 50	Vernon, AL	Numerous trees were down in Vernon and south of Vernon.

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 nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.9 hours before the alert went out and 139 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: 2639 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 13.1

Open this sounding in Storm Lab

The text

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

890 
WUUS1 KBHM 130956 RRA
SVRBHM
ALC075-131045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
455 AM CDT SAT JUN 13 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAMAR COUNTY... IN WEST CENTRAL ALABAMA

* UNTIL 545 AM CDT

* AT 453 AM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR
ACROSS NORTHERN LAMAR COUNTY NEAR DETROIT.  THIS STORM WAS MOVING
SOUTHEAST AT 30 TO 40 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR SULLIGENT BY AROUND 515 AM.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING
AND STAY AWAY FROM WINDOWS

WHEN THUNDERSTORMS ARE OCCURRING... PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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 13, 3:49 AM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM
349 AM CDT SAT JUN 13 1998

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

0320 AM    FLORENCE                  AL   50 MPH TSTM GUST
06/13/98   LAUDERDALE                     WIND GUST OF 50 MILES AN
                                          HOUR ESTIMATED BY EMA
                                          OFFICIALS.

0330 AM    FLORENCE                  AL   WIND DAMAGE
06/13/98   LAUDERDALE                     LARGE TREE FELL ONTO A
                                          HOUSE..NO INJURIES
                                          REPORTED.

Local storm report, Jun 13, 3:49 AM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM
349 AM CDT SAT JUN 13 1998

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

0320 AM    FLORENCE                  AL   50 MPH TSTM GUST
06/13/98   LAUDERDALE                     WIND GUST OF 50 MILES AN
                                          HOUR ESTIMATED BY EMA
                                          OFFICIALS.

0330 AM    FLORENCE                  AL   WIND DAMAGE
06/13/98   LAUDERDALE                     LARGE TREE FELL ONTO A
                                          HOUSE..NO INJURIES
                                          REPORTED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 2:43 AM CDT	Severe Thunderstorm Warning	BMX	Lauderdale	62 min
Jun 13, 3:25 AM CDT	Severe Thunderstorm Warning	BMX	Colbert	65 min
Jun 13, 3:34 AM CDT	Severe Thunderstorm Warning	BMX	Franklin	66 min
Jun 13, 3:38 AM CDT	Severe Thunderstorm Warning	BMX	Lawrence	62 min
Jun 13, 4:04 AM CDT	Severe Thunderstorm Warning	BMX	Madison	46 min
Jun 13, 4:20 AM CDT	Severe Thunderstorm Warning	BMX	Marion	65 min
Jun 13, 4:24 AM CDT	Severe Thunderstorm Warning	BMX	Winston	66 min
Jun 13, 5:30 AM CDT	Severe Thunderstorm Warning	BMX	Walker	65 min
Jun 13, 5:40 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson	65 min
Jun 13, 5:41 AM CDT	Severe Thunderstorm Warning	BMX	Fayette	49 min
Jun 13, 6:03 AM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	62 min
Jun 13, 6:36 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Shelby	64 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1998 Every severe thunderstorm warning in 1998

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.