Alert archive / Alabama / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 173, NWS Birmingham, AL

April 27, 1999Russell County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 27, 1999, 12:34 PM CDT for Russell County, Alabama. It was in force for 31 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
Apr 27, 1999, 12:34 PM CDT (17:34 UTC)
Expired
Apr 27, 1999, 1:05 PM CDT
In force
31 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Russell County, AL

What was reported inside it

TimeReportWhereRemark
Apr 27, 12:45 PM CDTThunderstorm Wind 55Pittsview, ALNumerous trees and power lines knocked down just east of Pittsview near the intersection of CR 4 and CR 39.

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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.6 hours before the alert went out and 136 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 23 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939Sfc1 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
23 J/kg
Mixed-layer CIN
-228 J/kg
Mixed-layer LCL
1180 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 10:58 AM CDTSevere Thunderstorm WarningBMXPike47 min
Apr 27, 11:23 AM CDTSevere Thunderstorm WarningBMXBarbour62 min
Apr 27, 11:33 AM CDTSevere Thunderstorm WarningBMXBullock47 min
Apr 27, 1:25 PM CDTSevere Thunderstorm WarningBMXWinston20 min
Apr 27, 1:27 PM CDTSevere Thunderstorm WarningBMXCullman48 min
Apr 27, 12:58 PM CDTSevere Thunderstorm WarningBMXChattahoochee, Muscogee47 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1999Every 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.