Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 83, NWS Jackson, MS

December 14, 19874 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Dec 14, 1987, 9:52 PM CST for 4 counties in Mississippi. It was in force for 53 min. 3 reports 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
Dec 14, 1987, 9:52 PM CST (03:52 UTC)
Expired
Dec 14, 1987, 10:45 PM CST
In force
53 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Holmes County, MS, Humphreys County, MS, Leflore County, MS, Sunflower County, MS

The radar

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

What was reported inside it

TimeReportWhereRemark
Dec 14, 10:15 PM CSTThunderstorm Wind 0Leflore, MS
Dec 14, 10:22 PM CSTThunderstorm Wind 0Holmes, MS
Dec 14, 10:22 PM CSTThunderstorm Wind 0Holmes, MS

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 3.9 hours before the alert went out and 118 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, Jackson, MS at 00:00Z on 1987-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1492 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, Jackson, MS at 00:00Z on 1987-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.1939587897117136156Sfc1 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
1492 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
1.6
Supercell composite
8.8

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.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 14, 9:39 PM CSTSevere Thunderstorm WarningJANWarren51 min
Dec 14, 10:13 PM CSTSevere Thunderstorm WarningJANMadison62 min
Dec 14, 10:32 PM CSTSevere Thunderstorm WarningJANCopiah28 min
Dec 14, 10:37 PM CSTSevere Thunderstorm WarningJANCarroll23 min
Dec 14, 10:53 PM CSTSevere Thunderstorm WarningJANRankin37 min
Dec 14, 10:59 PM CSTSevere Thunderstorm WarningJANAttala46 min
Dec 14, 11:30 PM CSTSevere Thunderstorm WarningJANScott30 min
Dec 14, 11:35 PM CSTSevere Thunderstorm WarningJANJefferson Davis25 min
Dec 14, 11:40 PM CSTSevere Thunderstorm WarningJANWinston35 min
Dec 14, 11:52 PM CSTSevere Thunderstorm WarningJANNewton33 min
Dec 15, 12:03 AM CSTSevere Thunderstorm WarningJANNeshoba32 min
Dec 15, 12:26 AM CSTSevere Thunderstorm WarningJANKemper34 min
Dec 15, 12:43 AM CSTSevere Thunderstorm WarningJANClarke42 min
Dec 15, 12:49 AM CSTSevere Thunderstorm WarningJANLauderdale46 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1987Every severe thunderstorm warning in 1987

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.