Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 37, NWS Jackson, MS

January 17, 1999Clay County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jan 17, 1999, 11:02 PM CST for Clay County, Mississippi. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 17, 1999, 11:02 PM CST (05:02 UTC)
Expired
Jan 17, 1999, 11:35 PM CST
In force
33 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Clay County, MS

The radar

The Columbus AFB radar (KGWX), 50 km from the middle of the area, began a volume at 05:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 17, 9:45 PM CSTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.0 hours before the alert went out and 169 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, Little Rock, AR at 00:00Z on 1999-01-18Temperature 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, Little Rock, AR at 00:00Z on 1999-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.1939587897Sfc1 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
2449 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
111 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 8:50 PM CSTSevere Thunderstorm WarningJANSunflower25 min
Jan 17, 9:45 PM CSTSevere Thunderstorm WarningJANLeflore30 min
Jan 17, 9:50 PM CSTSevere Thunderstorm WarningJANSunflower45 min
Jan 17, 10:19 PM CSTTornado WarningJANLeflore41 min
Jan 17, 10:22 PM CSTSevere Thunderstorm WarningJANGrenada48 min
Jan 17, 10:41 PM CSTSevere Thunderstorm WarningJANCarroll49 min
Jan 17, 11:10 PM CSTSevere Thunderstorm WarningJANAttala, Montgomery45 min
Jan 17, 11:10 PM CSTSevere Thunderstorm WarningJANHolmes45 min
Jan 17, 11:55 PM CSTSevere Thunderstorm WarningJANChoctaw35 min
Jan 18, 12:37 AM CSTSevere Thunderstorm WarningJANWinston33 min
Jan 18, 1:46 AM CSTSevere Thunderstorm WarningJANNewton34 min
Jan 18, 1:53 AM CSTSevere Thunderstorm WarningJANLauderdale47 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.