Alert archive / Mississippi / Tornado Warnings in 1998

Tornado Warning 50, NWS Jackson, MS

May 9, 1998Washington County, Mississippi

NWS Jackson, MS issued this tornado warning at May 9, 1998, 9:12 PM CDT for Washington County, Mississippi. It was in force for 48 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: May 9, 1998, 9:12 PM CDT (02:12 UTC)
Expired: May 9, 1998, 10:00 PM CDT
In force: 48 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Washington County, MS

What was reported inside it

Time	Report	Where	Remark
May 9, 9:30 PM CDT	Hail 0.75	Hollandale, 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 9, 6:00 PM CDT	Tornado Watch	SPC	5 hr
May 9, 7:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.2 hours before the alert went out and 134 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: 3361 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 2.7
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 100211 RRA
TORJAN
MSC151-100300-

BULLETIN- EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
912 PM CDT SAT MAY 9 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON COUNTY IN NORTHWESTERN MISSISSIPPI

* UNTIL 1000 PM CDT

* AT 911 PM CDT... RADAR INDICATED A POSSIBLE TORNADO 20 MILES
  SOUTH OF GREENVILLE OR 13 MILES WEST OF LELAND MOVING EAST AT 35
  MPH.

* SOME LOCATIONS IN THE PATHz OF THIS DANGEROUS STORM INCLUDE...
  LELAND                      BY 925 PM CDT
  HOLLANDALE                  BY 930 PM CDT

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR!

64

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:05 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	30 min
May 9, 7:09 PM CDT	Severe Thunderstorm Warning	JAN	Newton	36 min
May 9, 7:15 PM CDT	Tornado Warning	JAN	Noxubee	35 min
May 9, 7:17 PM CDT	Tornado Warning	JAN	Newton	33 min
May 9, 7:36 PM CDT	Tornado Warning	JAN	Kemper, Lauderdale	44 min
May 9, 9:41 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sharkey	49 min
May 9, 10:00 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	50 min

Nearby

Tornado Warnings in Mississippi, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.