Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 16, NWS Birmingham, AL

January 29, 2001Chilton County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 29, 2001, 4:33 PM CST for Chilton County, Alabama. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jan 29, 2001, 4:33 PM CST (22:33 UTC)
Expired: Jan 29, 2001, 5:15 PM CST
In force: 42 min
Issued by: NWS Birmingham, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Chilton County, AL

The radar

The Birmingham radar (KBMX), 28 km from the middle of the area, began a volume at 22:34 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jan 29, 3:00 PM CST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.6 hours before the alert went out and 28 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1127 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBMX 292233
SVRBHM
ALC021-292315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
433 PM CST MON JAN 29 2001

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHILTON COUNTY IN CENTRAL ALABAMA

* UNTIL 515 PM CST

* AT 429 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 13 MILES NORTHWEST OF JEMISON TO
  9 MILES SOUTHWEST OF MAPLESVILLE...MOVING EAST AT 35 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS 
INCLUDE...CLANTON....MAPLESVILLE...JEMISON...AND THORSBY.

STRONG DAMAGING WIND IS LIKELY WITH THIS STORM. TAKE COVER NOW. FINVD
SUBSTANTIAL SHELTER. AVOID WINDOWS...VEHICLES AND MOBILE HOMES.

LAT...LON 3309 8693 3268 8698 3272 8645 3304 8654

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 29, 1:44 PM CST	Severe Thunderstorm Warning	BMX	Sumter	46 min
Jan 29, 2:03 PM CST	Severe Thunderstorm Warning	BMX	Pickens	42 min
Jan 29, 2:38 PM CST	Severe Thunderstorm Warning	BMX	Greene	37 min
Jan 29, 2:54 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	66 min
Jan 29, 2:55 PM CST	Severe Thunderstorm Warning	BMX	Hale	50 min
Jan 29, 3:34 PM CST	Severe Thunderstorm Warning	BMX	Bibb, Perry	56 min
Jan 29, 3:57 PM CST	Severe Thunderstorm Warning	BMX	Jefferson	63 min
Jan 29, 4:26 PM CST	Severe Thunderstorm Warning	BMX	Dallas	49 min
Jan 29, 4:30 PM CST	Severe Thunderstorm Warning	BMX	Shelby	30 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2001 Every severe thunderstorm warning in 2001

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.