Alert archive / Mississippi / Tornado Warnings in 1999

Tornado Warning 10, NWS Jackson, MS

January 8, 1999Humphreys County, Mississippi

NWS Jackson, MS issued this tornado warning at Jan 8, 1999, 5:07 PM CST for Humphreys 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: Jan 8, 1999, 5:07 PM CST (23:07 UTC)
Expired: Jan 8, 1999, 5:55 PM CST
In force: 48 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Humphreys County, MS

What was reported inside it

Time	Report	Where	Remark
Jan 8, 5:15 PM CST	Tornado F0	Silver City, MS	This tornado briefly touched down in an open area and no damage occurred.

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
Jan 8, 3:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.1 hours before the alert went out and 310 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: 1083 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

999 
WFUS1 KJAN 082308 RRA
TORJAN
MSC053-082355-

BULLETIN- EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
507 PM CST FRI JAN 8 1999

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  HUMPHREYS COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 555 PM CST

* AT 505 PM CST... RADAR INDICATED A TORNADO 15 MILES WEST OF
  BELZONI OR 13 MILES SOUTHWEST OF ISOLA... MOVING NORTHEAST AT 30
  MPH.

* SOME LOCATIONS IN THE PATH OF THIS DANGEROUS STORM INCLUDE...
  ISOLA AT 525 PM CST
  SILVER CITY AT 525 PM CST
  BELZONI AT 530 PM CST

IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR
ROOM AWAY FROM WINDOWS.

67

What forecasters said that day

The local office's own words before this tornado 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 8, 2:40 PM CST, 2 hours 27 minutes before

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
090400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
240 PM CST FRI JAN 8 1999

A TORNADO WATCH IS IN EFFECT FOR MOST OF NORTHWEST AND WEST
CENTRAL MISSISSIPPI TILL 800 PM TONIGHT. THIS TORNADO WATCH AREA
MAY BE EXTENDED FARTHER TO THE EAST IN MISSISSIPPI LATER TONIGHT.
SCATTERED THUNDERSTORMS OVER MAINLY WEST AND NORTH MISSISSIPPI TODAY
WILL GRADUALLY INCREASE AND MOVE FARTHER EASTWARD TONIGHT.  A
DEVELOPING LOW PRESSURE SYSTEM WILL MOVE FROM THE ARKLATEX REGION
TODAY AND WILL WOVE INTO TENNESSEE BY LATE THIS EVENING.
THUNDERSTORMS WILL ORGANIZE ALONG THE TRAILING STRONG COLD
FRONT THAT IS FORECAST TO SWEEP EASTWARD DURING THE NIGHT BRINGING THE
THREAT FOR DAMAGING WINDS AND LARGE HAIL THROUGH MOST OF THE STATE.

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT/CIVIL DEFENSE PERSONNEL WILL BE NECESSARY IN COUNTIES AND
PARISHES COVERED BY THE CURRENT TORNADO WATCH AND MAY BECOME NECESSARY IN
ADDITIONAL COUTIES IN MISSISSIPPI LATER TONIGHT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 8, 4:03 PM CST	Tornado Warning	JAN	Issaquena	32 min
Jan 8, 4:08 PM CST	Severe Thunderstorm Warning	JAN	Washington	37 min
Jan 8, 4:23 PM CST	Tornado Warning	JAN	Sharkey	32 min
Jan 8, 4:44 PM CST	Severe Thunderstorm Warning	JAN	Washington	36 min
Jan 8, 4:51 PM CST	Tornado Warning	JAN	Sharkey	34 min
Jan 8, 5:24 PM CST	Severe Thunderstorm Warning	JAN	Issaquena	36 min
Jan 8, 5:37 PM CST	Tornado Warning	JAN	Holmes	48 min
Jan 8, 5:51 PM CST	Severe Thunderstorm Warning	JAN	Sharkey	34 min

Nearby

Tornado Warnings in Mississippi, 1999 Every tornado warning in 1999 Tornadoes 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.