Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 296, NWS Jackson, MS

April 14, 1999Montgomery County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 14, 1999, 8:12 PM CDT for Montgomery County, Mississippi. It was in force for 33 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 14, 1999, 8:12 PM CDT (01:12 UTC)
Expired: Apr 14, 1999, 8:45 PM CDT
In force: 33 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Montgomery County, MS

The radar

The Columbus AFB radar (KGWX), 127 km from the middle of the area, began a volume at 01:12 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.

What was reported inside it

Time	Report	Where	Remark
Apr 14, 8:30 PM CDT	Thunderstorm Wind	Kilmichael, MS	Several trees were blown down across Highway 82.

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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 14, 6:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.2 hours before the alert went out and 138 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 219 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

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

Local storm report, Apr 14, 7:17 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
717 PM CDT WED APR 14 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0545 PM    DARNELL                   LA   WIND DAMAGE
04/14/99   WEST CARROLL                   SEVERAL MOBILE HOMES
                                          DAMAGED...TREE DOWN ACROSS
                                          ROAD...POWERLINES DOWN

0555 PM    3 S LAKE PROVIDENCE       LA   WIND DAMAGE
04/14/99   EAST CARROLL                   LARGE SHED BLOWN INTO
                                          HIGHWAY 65 AND DESTROYED

0605 PM    FITLER                    MS   .75 INCH HAIL
04/14/99   ISSAQUENA

0620 PM    5 SW ROLLING FORK         MS   1 INCH HAIL
04/14/99   SHARKEY

0622 PM    2 W ROLLING FORK          MS   TORNADO
04/14/99   SHARKEY                        SPOTTER REPORTED A BRIEF
                                          TOUCHDOWN IN AN OPEN
                                          FIELD...NO APPARENT DAMAGE

Local storm report, Apr 14, 7:17 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
717 PM CDT WED APR 14 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0545 PM    DARNELL                   LA   WIND DAMAGE
04/14/99   WEST CARROLL                   SEVERAL MOBILE HOMES
                                          DAMAGED...TREE DOWN ACROSS
                                          ROAD...POWERLINES DOWN

0555 PM    3 S LAKE PROVIDENCE       LA   WIND DAMAGE
04/14/99   EAST CARROLL                   LARGE SHED BLOWN INTO
                                          HIGHWAY 65 AND DESTROYED

0605 PM    FITLER                    MS   .75 INCH HAIL
04/14/99   ISSAQUENA

0620 PM    5 SW ROLLING FORK         MS   1 INCH HAIL
04/14/99   SHARKEY

0622 PM    2 W ROLLING FORK          MS   TORNADO
04/14/99   SHARKEY                        SPOTTER REPORTED A BRIEF
                                          TOUCHDOWN IN AN OPEN
                                          FIELD...NO APPARENT DAMAGE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:09 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Leflore	46 min
Apr 14, 7:21 PM CDT	Tornado Warning	JAN	Holmes	34 min
Apr 14, 7:24 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne	36 min
Apr 14, 7:32 PM CDT	Tornado Warning	JAN	Carroll	48 min
Apr 14, 7:49 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	31 min
Apr 14, 7:57 PM CDT	Tornado Warning	JAN	Holmes	33 min
Apr 14, 8:31 PM CDT	Severe Thunderstorm Warning	JAN	Webster	49 min
Apr 14, 8:35 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	35 min
Apr 14, 8:38 PM CDT	Tornado Warning	JAN	Montgomery	32 min
Apr 14, 9:04 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Washington	36 min
Apr 14, 9:14 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sunflower	31 min
Apr 14, 9:21 PM CDT	Severe Thunderstorm Warning	JAN	Clay	49 min
Apr 14, 9:27 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	33 min
Apr 14, 9:51 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Simpson	49 min
Apr 14, 9:58 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	47 min
Apr 14, 10:17 PM CDT	Severe Thunderstorm Warning	JAN	Scott, Smith	48 min
Apr 14, 10:19 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Smith	51 min
Apr 14, 10:43 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	32 min
Apr 14, 10:45 PM CDT	Tornado Warning	JAN	Covington	35 min
Apr 14, 10:53 PM CDT	Tornado Warning	JAN	Jones	32 min
Apr 14, 10:59 PM CDT	Tornado Warning	JAN	Jasper	51 min
Apr 14, 11:26 PM CDT	Severe Thunderstorm Warning	JAN	Forrest, Jones	34 min
Apr 14, 11:35 PM CDT	Tornado Warning	JAN	Jones	50 min
Apr 14, 11:40 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	50 min
Apr 14, 11:41 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	34 min
Apr 14, 11:53 PM CDT	Tornado Warning	JAN	Forrest	52 min
Apr 15, 12:23 AM CDT	Tornado Warning	JAN	Jones	32 min
Apr 15, 12:31 AM CDT	Severe Thunderstorm Warning	JAN	Kemper, Neshoba	49 min
Apr 15, 12:35 AM CDT	Severe Thunderstorm Warning	JAN	Clarke	35 min
Apr 14, 7:15 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	35 min
Apr 14, 8:05 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	35 min
Apr 14, 7:19 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	36 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1999 Every 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; radar from the NEXRAD Level II archive.