Alert archive / Alabama / Tornado Warnings in 1986

Tornado Warning 4, NWS Mobile, AL

May 18, 1986Clarke County, Alabama

NWS Mobile, AL issued this tornado warning at May 18, 1986, 12:00 PM CDT for Clarke County, Alabama. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
May 18, 1986, 12:00 PM CDT (17:00 UTC)
Expired
May 18, 1986, 1:00 PM CDT
In force
60 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Clarke County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 5.0 hours before the alert went out and 148 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, Centreville/Bibb, AL at 12:00Z on 1986-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3484 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, Centreville/Bibb, AL at 12:00Z on 1986-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.193958Sfc1 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
3484 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1039 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

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 Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 1:00 PM CDTSevere Thunderstorm WarningMOBMonroe60 min
May 18, 4:20 PM CDTSevere Thunderstorm WarningMOBDallas70 min
May 18, 6:10 PM CDTSevere Thunderstorm WarningMOBEscambia60 min
May 18, 6:25 PM CDTSevere Thunderstorm WarningMOBMontgomery65 min
May 18, 6:45 PM CDTTornado WarningMOBEscambia60 min

Nearby

Tornado Warnings in Alabama, 1986Every tornado warning in 1986Tornadoes in 1986

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.