Alert archive / Mississippi / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 202, NWS Jackson, MS

April 27, 1997Lawrence County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 27, 1997, 4:42 AM CDT for Lawrence 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 27, 1997, 4:42 AM CDT (09:42 UTC)
Expired: Apr 27, 1997, 5:15 AM CDT
In force: 33 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Lawrence County, MS

What was reported inside it

Time	Report	Where	Remark
Apr 27, 5:00 AM CDT	Thunderstorm Wind	Tilton, MS	Several trees were blown down.

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 27, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 27, 4:15 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 9.7 hours before the alert went out and 86 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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 533 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

668 
WUUS1 KJAN 270944 RRA
SVRJAN
MSC077-271030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
442 AM CDT SUN APR 27 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL MISSISSIPPI
 
   ...LAWRENCE COUNTY
 
AT 440 AM...RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5 MILES
SOUTHWEST OF MONTICELLO. THE STORM WAS MOVING TO THE NORTHEAST AT 40
MPH. IT WILL MOVE ACROSS THE MONTICELLO AREA ABOUT 450 AM AND SILVER
CREEK ABOUT 5 AM.
 
A TORNADO WATCH IS ALSO IN EFFECT.  REMEMBER SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.  REMAIN
CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
<
 
75

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 12:21 AM CDT	Severe Thunderstorm Warning	JAN	Adams	39 min
Apr 27, 1:05 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	40 min
Apr 27, 1:21 AM CDT	Severe Thunderstorm Warning	JAN	Scott, Smith	39 min
Apr 27, 2:00 AM CDT	Flash Flood Warning	JAN	Adams	3 hr
Apr 27, 2:29 AM CDT	Severe Thunderstorm Warning	JAN	Simpson	31 min
Apr 27, 2:32 AM CDT	Severe Thunderstorm Warning	JAN	Copiah	43 min
Apr 27, 3:58 AM CDT	Severe Thunderstorm Warning	JAN	Washington	47 min
Apr 27, 4:48 AM CDT	Tornado Warning	JAN	Jefferson Davis, Marion	42 min
Apr 27, 5:25 AM CDT	Severe Thunderstorm Warning	JAN	Covington	35 min
Apr 27, 6:01 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	44 min
Apr 27, 6:03 AM CDT	Severe Thunderstorm Warning	JAN	Marion	42 min
Apr 27, 6:23 AM CDT	Tornado Warning	JAN	Marion	37 min
Apr 27, 6:44 AM CDT	Tornado Warning	JAN	Lamar	46 min
Apr 27, 7:07 AM CDT	Tornado Warning	JAN	Forrest	53 min
Apr 27, 7:48 AM CDT	Severe Thunderstorm Warning	JAN	Jones	27 min
Apr 27, 9:07 AM CDT	Flash Flood Warning	JAN	Hinds	2 hr
Apr 27, 11:42 AM CDT	Flash Flood Warning	JAN	Jefferson Davis, Marion	3 hr
Apr 27, 12:27 PM CDT	Severe Thunderstorm Warning	JAN	Jones	48 min
Apr 27, 1:00 PM CDT	Flash Flood Warning	JAN	Lincoln	3 hr
Apr 27, 2:56 PM CDT	Flash Flood Warning	JAN	Lauderdale	2 hr
Apr 27, 3:15 PM CDT	Flash Flood Warning	JAN	Jasper, Newton, Smith	105 min
Apr 27, 3:15 PM CDT	Flash Flood Warning	JAN	Neshoba	105 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1997 Every severe thunderstorm warning in 1997

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.