Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 10, NWS Jackson, MS

February 17, 1986Sumter County, Alabama

NWS Jackson, MS issued this severe thunderstorm warning at Feb 17, 1986, 9:53 PM CST for Sumter County, Alabama. It was in force for 47 min. 2 reports 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: Feb 17, 1986, 9:53 PM CST (03:53 UTC)
Expired: Feb 17, 1986, 10:40 PM CST
In force: 47 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Sumter County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Feb 17, 10:08 PM CST	Thunderstorm Wind 0	Sumter, AL
Feb 17, 10:25 PM CST	Hail 0.75	Sumter, AL

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.9 hours before the alert went out and 100 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: 1299 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.0

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.

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, Feb 17, 3:59 PM CST, 5 hours 54 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
358 PM CST MON FEB 17 1986

MISSISSIPPI HIGHWAY PATROL REPORTS GOLF BALL SIZE HALL 10 MILES
SOUTH OF LOUISVILLE NEAR HIGHWAY 15 AT 345 PM CST.

Local storm report, Feb 17, 5:47 PM CST, 4 hours 6 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
 545 PM CST MON FEB 17 1986

 250 PM CST...BOLIVAR CD REPORTS MARBLE SIZE HAIL AT ROSEDALE.
320 PM CST...BOLIVAR CD REPORTS MARBLE SIZE AT DUNCAN.
330 PM CST...GOLF BALL SIZE HAIL REPORTED 3 MILES SW OF CLEVELAND
             BY BOLIVAR CD.
400 PM CST...RULEVILLE PD REPORTS DIME SIZE HAIL JUST NORTH OF TOWN.
405 PM CST...SUNFLOWER CD REPORTS PEA SIZE HAIL AT DREW.
425 PM CST...GREENWOOD-LEFLORE CD REPORTS MARBLE SIZE HAIL NEAR
             MINTER CITY.
435 PM CST...GRENADA CD REPORTS QUARTER SIZE HAIL AT INTERSECTION OF
             I-55 AND HWY 7 IN NORTHERN GRENADA COUNTY.
450 PM CST...YALOBUSHA CD REPORTS DIME SIZE HAIL AT COFFEEVILLE.
500 PM CST...GRENADA CD REPORTS DIME SIZE HAIL NEAR SAME LOCATION AS
             IN EARLIER REPORT AT 435 PM CST.
505 PM CST...GREENWOOD-LEFLORE CD REPORTS MARBLE SIZE HAIL NEAR MONEY..
             AND MARBLE TO GOLF BALL SIZE HAIL 5 SW OF MINTER CITY. <<

Special weather statement, Feb 17, 6:25 PM CST, 3 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
620 PM CST MON FEB 17 1986

THUNDERSHOWERS STARTED DEVELOPING IN LAUDERDALE COUNTY AROUND 600 PM
AND BY 615 PM RADAR SHOWED WIDELY SCATTERED THUNDERSHOWERS FROM NEAR
BASIC CITY TO 5 MILES NORTHWEST OF KEY FIELD TO ABOUT 10 MILES NORTH
OF KEY FIELD.

THESE THUNDERSHOWERS SHOULD MOVE NORTHEAST AT 30 TO 40 MPH. AFTER THEY
HAVE BECOME FULLY DEVELOPED.

RESIDENTS OF LAUDERDALE COUNTY...INCLUDING THE CITY OF MERIDIAN...
SHOULD BE ALERT FOR THREATENING WEATHER FOR THE NEXT 30 TO 40 MINUTES.

Local storm report, Feb 17, 8:13 PM CST, 1 hour 40 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
810 PM CST MON FEB 17 1986

MORE STORM REPORTS RECEIVED AT THE JACKSON NATIONAL WEATHER SERVICE
OFFICE SINCE 545 PM CST....

550 PM CST...GRENADA CD REPORTS DIME SIZE HAIL IN GRENADA
610 PM CST...WARREN SO REPORTS 20 MINUTES OF MARBLE SIZE HAIL AT
             EAGLE LAKE IN NORTHERN WARREN COUNTY.
640 PM CST...GOLF BALL SIZE HAIL AT SUNFLOWER.
650 PM CST...MARBLE SIZE HAIL 2 MILES NORTH OF VICKSBURG.
725 PM CST...MARBLE SIZE HAIL AT BYRAM.
736 PM CST...GOLF BALL SIZE HAIL AT RICHLAND.
740 PM CST...GOLF BALL SIZE HAIL AT PEARL.
745 PM CST...3/4 TO ONE INCH SIZE HAIL AT CROSSGATES IN BRANDON.
748 PM CST...3/4 INCH HAIL AT RESERVOIR SUBRDIVISION.
749 PM CST...3/4 TO ONE INCH SIZE HAIL AT RESERVOIR SUBDIVISION.
750 PM CST...MARBLE SIZE HAIL NORTH OF BRANDON.
753 PM CST...ONE AND ONE-QUARTER IMCH HAIL AT RESERVOIR SUBDIVISION.
805 PM CST...MARBLE SIZE HAIL AT FLORA.

Special weather statement, Feb 17, 8:16 PM CST, 1 hour 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
810 PM CST MON FEB 17 1986

AT 808 PM CST RADAR SHOWED A 50 MILE WIDE AREA OF THUNDERSTORMS
THAT EXTENDED FROM NEAR FLORA MISSISSIPPI TO NEAR FULTON MISSISSIPPI.
THE EASTERN EDGE OF THIS AREA HAD MOVED INTO NORTHWEST WINSTON COUNTY
AND THERE WAS A STORM ABOUT 12 MILES NORTHWEST OF LOUISVILLE.

THESE THUNDERSTORMS HAVE PRODUCED HAIL RANGING FROM PEA SIZED TO GOLF
BALL SIZED...AND FREQUENT LIGHTNING DURING THE LAST TWO TO THREE HOURS.
ALSO SEVERAL SEVERE THUNDERSTORM WARNING HAVE BEEN ISSUED IN
CONNECTION WITH THESE STORMS.

RESIDENTS OF EAST CENTRAL MISSISSIPPI AND EXTREME WEST CENTRAL ALABAMA
SHOULD REMAIN ALERT FOR TH E POSSIBILITY OF SEVERE WEATHER FOR THE NEXT
ONE TO FOUR HOURS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 17, 6:55 PM CST	Severe Thunderstorm Warning	JAN	Leflore	40 min
Feb 17, 7:35 PM CST	Severe Thunderstorm Warning	JAN	Rankin	40 min
Feb 17, 8:08 PM CST	Severe Thunderstorm Warning	JAN	Madison	37 min
Feb 17, 8:47 PM CST	Severe Thunderstorm Warning	JAN	Winston	43 min
Feb 17, 9:05 PM CST	Severe Thunderstorm Warning	JAN	Noxubee	40 min
Feb 17, 9:45 PM CST	Severe Thunderstorm Warning	JAN	Lauderdale	25 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1986 Every severe thunderstorm warning in 1986

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.