Alert archive / Alabama / Tornado Watches in 1998

Tornado Watch 40

February 16, 199815 counties in Alabama; 10 counties in Florida; Clay County, Early County, Georgia

The Storm Prediction Center issued this tornado watch at Feb 16, 1998, 6:00 PM CST for 15 counties in Alabama; 10 counties in Florida; Clay County, Early County, Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Feb 16, 1998, 6:00 PM CST (00:00 UTC)
Expired
Feb 17, 1998, 12:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 27 counties

Baldwin County, AL, Butler County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Clay County, GA, Early County, GA

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.0 hours before the alert went out and 256 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 1998-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 572 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 1998-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
572 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.8

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 17, 2:00 AM CSTSevere Thunderstorm WatchSPCAutauga, Barbour, Bibb, Blount, Bullock, Butler and 44 more6 hr
Feb 16, 10:30 PM CSTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 20 more7 hr
Feb 17, 2:30 AM CSTTornado WatchSPCBrevard, Charlotte, DeSoto, Hardee, Highlands, Hillsborough and 13 more7 hr
Feb 17, 5:15 AM CSTSevere Thunderstorm WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 61 more6 hr
Feb 17, 8:30 AM CSTSevere Thunderstorm WatchSPCColumbia, Elbert, Hart, Lincoln, McDuffie, Oglethorpe and 4 more6 hr

Nearby

Tornado Watches in Alabama, 1998Tornado Watches in Florida, 1998Tornado Watches in Georgia, 1998Every tornado watch 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; the sounding from the Mesonet's radiosonde archive.