Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 112, NWS Jackson, MS

January 30, 1999Clarke County, Jasper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 30, 1999, 5:09 PM CST for Clarke County, Jasper County, Mississippi. It was in force for 66 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
Jan 30, 1999, 5:09 PM CST (23:09 UTC)
Expired
Jan 30, 1999, 6:15 PM CST
In force
66 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Clarke County, MS, Jasper County, MS

What was reported inside it

TimeReportWhereRemark
Jan 30, 5:25 PM CSTHail 1.75Heidelberg, MSSeveral roofs and automobiles received minor damage.

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

Jackson, MS (KJAN), launched 12:00Z, 11.2 hours before the alert went out and 115 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 12:00Z on 1999-01-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1999-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
287 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jan 30, 11:56 AM CST, 5 hours 13 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
310400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1030 AM CST SAT JAN 30 1999

A LOW PRESSURE SYSTEM IS LOCATED IN EASTERN OKLAHOMA WITH A COLD
FRONTAL SYSTEM SOUTH OF THE LOW THROUGH WESTERN LOUISIANA. A WARM
Special weather statement, Jan 30, 11:58 AM CST, 5 hours 11 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
310400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1030 AM CST SAT JAN 30 1999

A LOW PRESSURE SYSTEM IS LOCATED IN EASTERN OKLAHOMA WITH A COLD
FRONTAL SYSTEM SOUTH OF THE LOW THROUGH WESTERN LOUISIANA.  A WARM
FRONTAL SYSTEM IS LOCATED ACROSS NORTHERN LOUISIANA AND INTO NORTHERN
MISSISSIPPI. SATELLITE IMAGERY INDICATES THERE WILL BE SOME BREAKS
IN THE CLOUD COVER IN CENTRAL AND SOUTHERN MISSISSIPPI THIS AFTERNOON.
IN THE WARM AND UNSTABLE AIR SOUTH OF THE WARM FRONT AND EAST OF THE COLD
FRONT...A FEW SEVERE THUNDERSTORMS COULD DEVELOP IN CENTRAL AND SOUTHERN
MISSISSIPPI...ESPECIALLY SOUTH OF A MERIDIAN TO JACKSON TO VICKSBURG
LINE. THE PRIMARY SEVERE THREAT WILL BE FROM DAMAGING THUNDERSTORM
WINDS IN THE SQUALL LINE THAT IS PROJECTED TO MOVE THROUGH THE AREA
THIS AFTERNOON.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT/CIVIL DEFENSE PERSONNEL MAY BE REQUIRED TODAY.
FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT:
HTTP://WWW.JANNWS.STATE.MS.US      /IN LOWER CASE LETTERS/

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 29, 6:50 PM CSTSevere Thunderstorm WarningJANLamar50 min
Jan 29, 7:38 PM CSTSevere Thunderstorm WarningJANForrest47 min
Jan 29, 8:23 PM CSTSevere Thunderstorm WarningJANMarion52 min
Jan 29, 9:15 PM CSTSevere Thunderstorm WarningJANLamar60 min
Jan 29, 9:29 PM CSTFlash Flood WarningJANAdams, Jefferson5 hr
Jan 29, 9:44 PM CSTTornado WarningJANLamar31 min
Jan 29, 9:58 PM CSTTornado WarningJANForrest47 min
Jan 29, 10:42 PM CSTFlash Flood WarningJANClarke2 hr
Jan 29, 10:42 PM CSTFlash Flood WarningJANJones2 hr
Jan 29, 11:00 PM CSTFlash Flood WarningJANForrest, Lamar, Marion3 hr
Jan 30, 1:50 AM CSTFlash Flood WarningJANLamar, Marion2 hr
Jan 30, 1:50 AM CSTFlash Flood WarningJANForrest2 hr
Jan 30, 8:47 AM CSTFlash Flood WarningJANClaiborne, Copiah, Hinds, Jefferson2 hr
Jan 30, 8:47 AM CSTFlash Flood WarningJANMadison, Rankin2 hr
Jan 30, 10:21 AM CSTSevere Thunderstorm WarningJANLincoln29 min
Jan 30, 10:44 AM CSTSevere Thunderstorm WarningJANLawrence, Simpson46 min
Jan 30, 11:09 AM CSTFlash Flood WarningJANLawrence, Rankin, Simpson, Smith2 hr
Jan 30, 11:09 AM CSTFlash Flood WarningJANNeshoba, Newton, Scott2 hr
Jan 30, 12:17 PM CSTFlash Flood WarningJANClarke, Jasper, Kemper, Lauderdale3 hr
Jan 30, 1:15 PM CSTSevere Thunderstorm WarningJANSimpson, Smith30 min
Jan 30, 4:41 PM CSTSevere Thunderstorm WarningJANJones49 min
Jan 30, 5:00 PM CSTSevere Thunderstorm WarningJANLauderdale, Newton50 min
Jan 29, 7:45 PM CSTFlash Flood WarningJANMorehouse, Richland, West Carroll28 hr
Jan 29, 7:45 PM CSTFlash Flood WarningJANEast Carroll, Madison28 hr
Jan 29, 11:57 PM CSTFlash Flood WarningJANEast Carroll, Madison, Richland4 hr
Jan 29, 11:57 PM CSTFlash Flood WarningJANMorehouse4 hr
Jan 29, 11:57 PM CSTFlash Flood WarningJANWest Carroll4 hr

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.