Alert archive / Mississippi / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 694, NWS Jackson, MS

October 13, 2001Lawrence County, Simpson County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Oct 13, 2001, 11:49 AM CDT for Lawrence County, Simpson County, Mississippi. It was in force for 56 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Oct 13, 2001, 11:49 AM CDT (16:49 UTC)
Expired: Oct 13, 2001, 12:45 PM CDT
In force: 56 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Lawrence County, MS, Simpson County, MS

What was reported inside it

Time	Report	Where	Remark
Oct 13, 12:00 PM CDT	Thunderstorm Wind	Monticello, MS	A few trees were blown down in town.
Oct 13, 12:40 PM CDT	Thunderstorm Wind	Mendenhall, MS	A couple of trees and several large limbs were reported down across the city.

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
Oct 13, 8:00 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 4.8 hours before the alert went out and 62 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: 425 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 668 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

404 
WUUS54 KJAN 131651
SVRJAN
MSC077-127-131745-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1149 AM CDT SAT OCT 13 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SIMPSON COUNTY IN CENTRAL MISSISSIPPI
  LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI

* UNTIL 1245 PM CDT

* AT 1149 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 16 MILES WEST OF MENDENHALL...TO 
  ABOUT 10 MILES SOUTHWEST OF MONTICELLO...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORMS WILL...
  BE NEAR MENDENHALL AND MONTICELLO AT 1220 PM CDT

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS.

DAMAGING WINDS AND TORRENTIAL RAINS ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 3201 9017 3178 9007 3170 9024 3139 9024
          3141 8997 3176 8998 3206 8981

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.

NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 13, 4:06 AM CDT, 7 hours 43 minutes earlier.

Area forecast discussion, Oct 13, 4:06 AM CDT, 7 hours 43 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
300 AM CDT SAT OCT 13 2001

MODELS IN GENERAL AGREEMENT ON SYNOPTIC FEATURES ALTHOUGH
DIFFERENCES IN TIMING REMAIN. UPPER LOW TO DIG INTO ERN TX TODAY AS
100+ KT UPPER JET MAX LIFTS NWD JUST W OF MS RIVER. MODELS INDICATE
SLIGHT NEGATIVE TILT TO UPPER TROUGH THIS AFTERNOON. LOW LEVEL
DYNAMICS INCREASE WITH 850 MB JET MAX INTO WRN ZONES THIS MORNING.
850 MB WIND SPEEDS FORECAST 40-50 KT RANGE WRN AREAS THIS
MORNING...SPREADING ACROSS REST OF FORECAST AREA BY 18Z TODAY. AS
UPPER LOW DIGS OVER ERN TX...UPPER FLOW NEARLY PARALLEL WITH COLD
FRONT. THIS TO INCREASE THREAT OF TRAINING ECHOES THIS AFTERNOON.
PRECIPITABLE WATER VALUES FORECAST FROM 1.5 TO 2+ INCHES TODAY LOOK
SUFFICIENT FOR POSSIBILITY OF FLOODING PROBLEMS IF TRAINING CELLS
OCCUR. WILL ISSUE FLOOD WATCH FOR WRN ZONES FOR TODAY. WILL NOT
INCLUDE ERN ZONES AT THIS TIME SINCE UPPER SYSTEM TO ACCELERATE
LATER TODAY...REDUCING THE CHANCE OF TRAINING CELLS ERN AREAS. NCEP
RAIN ESTIMATES OF 1-2 INCHES WRN ZONES THROUGH 18Z TODAY LOOK A BIT
OVERDONE BUT GENERAL TOTALS FROM 1-2 INCHES 18Z THROUGH 00Z SUNDAY
WRN ZONES LOOK UNDERDONE. EXPECT AVERAGES FROM 1/2 TO 1 INCH THROUGH
MIDDAY WEST THEN 2-3 INCHES W AND CENTRAL AREAS BY 00Z SUNDAY...WITH
LOCALLY HIGHER AMOUNTS.

UPPER TROUGH MOVING NEAR MS RIVER AROUND MIDNIGHT. MODELS AGREE THAT
SIGNIFICANT UPPER DIVERGENCE TO CONTINUE NRN HALF OF FORECAST AREA
THROUGH 06Z SUNDAY...ENDING BY 12Z SUNDAY MORNING. 850 MB FLOW
VEERING TO THE W OVER WRN ZONES BY MIDNIGHT...SHIFTING W/NW ALL
ZONES BY 12Z SUNDAY. COLD 500 MB TEMP TROUGH PIVOTING FROM NE LA
INTO W CENTRAL AND NW MS TONIGHT...MOVING N OF THE AREA EARLY SUNDAY
MORNING. AIR MASS REMAINING UNSTABLE EARLY TONIGHT SO WILL KEEP
HIGHS POPS INTO SECOND PERIOD.

AIR MASS DRYING RAPIDLY BEHIND COLD FRONT...REMAINING DRY THROUGH
FRIDAY.

.PRELIM NUMBERS...
JAN 078/062/075/048  +9-0
MEI 079/067/075/048  ++10

.JAN...
MS...FLOOD WATCH WRN MS FOR TODAY
LA...FLOOD NE LA WATCH FOR TODAY
AR...FLOOD SE AR WATCH FOR TODAY

In the hours before

Local storm report, Oct 13, 8:51 AM CDT, 2 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
851 AM CDT SAT OCT 13 2001

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

0840 AM    NATCHEZ                   MS   WIND DAMAGE
10/13/01   ADAMS

Local storm report, Oct 13, 9:28 AM CDT, 2 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
928 AM CDT SAT OCT 13 2001

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

0840 AM    NATCHEZ                   MS   WIND DAMAGE
10/13/01   ADAMS

0910 AM    8N FAYETTE                MS   WIND DAMAGE
10/13/01   JEFFERSON                      REPORTED BY JEFFERSON
                                          COUNTY SHERIFFS OFFICE.
                                          POSSIBLE TORNADO.

Local storm report, Oct 13, 9:56 AM CDT, 1 hour 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
956 AM CDT SAT OCT 13 2001

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

0830 AM                              LA   WIND DAMAGE
10/13/01   CONCORDIA                      MOBLIE HOMES DAMAGED.
                                          REPORTED BY HAM RADIO
                                          OPERATOR. POSSIBLE
                                          TORNADO.

Local storm report, Oct 13, 10:28 AM CDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1028 AM CDT SAT OCT 13 2001

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

1024 AM    1N ALLEN                  MS   TORNADO
10/13/01   COPIAH                         TORNADO ON THE GROUND
                                          REPORTED BY COPIAH COUNTY
                                          EMA NEAR HIGHWAY 28.

Local storm report, Oct 13, 11:13 AM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1113 AM CDT SAT OCT 13 2001

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

0910 AM    NATCHEZ                   MS   WIND DAMAGE
10/13/01   ADAMS                          REPORTED BY ADAMS COUNTY
                                          EMA. TREES UPROOTED,
                                          POWER LINES DOWN, AND
                                          LOTS OF DEBREE. POSSIBLE
                                          TORNADO.

Special weather statement, Oct 13, 11:41 AM CDT, 8 minutes before

WATCH NOTIFICATION FOR TORNADO WATCH 785...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
1141 AM CDT SAT OCT 13 2001

MSZ025-027-035-036-040>042-047-053-059>061-131800-
THE NATIONAL WEATHER SERVICE IN JACKSON HAS CLEARED A PORTION OF
TORNADO WATCH 785. COUNTIES CLEARED INCLUDE:

IN NORTH MISSISSIPPI:
LEFLORE...CARROLL...

IN CENTRAL MISSISSIPPI:
HUMPHREYS...HOLMES...ISSAQUENA...SHARKEY...YAZOO...WARREN...
CLAIBORNE...JEFFERSON...

IN SOUTH MISSISSIPPI:
ADAMS...FRANKLIN MS...

THIS INCLUDES THE CITIES OF...BELZONI...CARROLLTON...FAYETTE...
GREENWOOD...LEXINGTON...MAYERSVILLE...MEADVILLE...NATCHEZ...
PORT GIBSON...ROLLING FORK...VICKSBURG...YAZOO CITY...

MSZ028>033-037>039-043>045-048>051-054>057-062>066-072>074-131800-
TORNADO WATCH 785 REMAINS VALID UNTIL 100 PM CDT SATURDAY FOR THE
FOLLOWING COUNTIES:

IN NORTH MISSISSIPPI:
MONTGOMERY...WEBSTER...CLAY...LOWNDES...CHOCTAW...OKTIBBEHA...

IN CENTRAL MISSISSIPPI:
ATTALA...WINSTON...NOXUBEE...MADISON MS...LEAKE...NESHOBA...HINDS...
RANKIN...SCOTT...NEWTON...COPIAH...SIMPSON...SMITH...JASPER...

IN SOUTH MISSISSIPPI:
LINCOLN...LAWRENCE...JEFFERSON DAVIS...COVINGTON...JONES...MARION...
LAMAR...FORREST...

THIS INCLUDES THE CITIES OF...ACKERMAN...BAY SPRINGS...BRANDON...
BROOKHAVEN...CANTON...CARTHAGE...COLLINS...COLUMBIA...COLUMBUS...
DECATUR...EUPORA...FOREST...HATTIESBURG...HAZLEHURST...JACKSON...
KOSCIUSKO...LAUREL...LOUISVILLE...MACON...MENDENHALL...MONTICELLO...
PHILADELPHIA...PRENTISS...PURVIS...RALEIGH...STARKVILLE...
WEST POINT...WINONA...

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 7:07 AM CDT	Severe Thunderstorm Warning	JAN	Washington	53 min
Oct 13, 7:35 AM CDT	Tornado Warning	JAN	Smith	25 min
Oct 13, 7:42 AM CDT	Severe Thunderstorm Warning	JAN	Warren	33 min
Oct 13, 7:59 AM CDT	Tornado Warning	JAN	Scott	31 min
Oct 13, 8:10 AM CDT	Tornado Warning	JAN	Copiah	35 min
Oct 13, 8:32 AM CDT	Tornado Warning	JAN	Rankin	43 min
Oct 13, 8:42 AM CDT	Severe Thunderstorm Warning	JAN	Adams	33 min
Oct 13, 8:57 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Jefferson	33 min
Oct 13, 9:00 AM CDT	Tornado Warning	JAN	Madison, Yazoo	30 min
Oct 13, 9:10 AM CDT	Tornado Warning	JAN	Adams, Franklin	50 min
Oct 13, 9:21 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	29 min
Oct 13, 9:28 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	52 min
Oct 13, 9:33 AM CDT	Severe Thunderstorm Warning	JAN	Hinds	57 min
Oct 13, 9:34 AM CDT	Tornado Warning	JAN	Jefferson	41 min
Oct 13, 9:40 AM CDT	Severe Thunderstorm Warning	JAN	Simpson	35 min
Oct 13, 9:44 AM CDT	Tornado Warning	JAN	Copiah, Lincoln	46 min
Oct 13, 9:49 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne	26 min
Oct 13, 10:01 AM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	44 min
Oct 13, 10:14 AM CDT	Severe Thunderstorm Warning	JAN	Clay	46 min
Oct 13, 10:26 AM CDT	Tornado Warning	JAN	Hinds	49 min
Oct 13, 10:30 AM CDT	Tornado Warning	JAN	Copiah	45 min
Oct 13, 10:35 AM CDT	Severe Thunderstorm Warning	JAN	Forrest	55 min
Oct 13, 10:38 AM CDT	Severe Thunderstorm Warning	JAN	Marion	37 min
Oct 13, 10:51 AM CDT	Severe Thunderstorm Warning	JAN	Madison	54 min
Oct 13, 10:55 AM CDT	Severe Thunderstorm Warning	JAN	Noxubee	50 min
Oct 13, 11:06 AM CDT	Tornado Warning	JAN	Rankin	24 min
Oct 13, 11:10 AM CDT	Severe Thunderstorm Warning	JAN	Copiah, Lincoln	50 min
Oct 13, 11:32 AM CDT	Severe Thunderstorm Warning	JAN	Clarke	43 min
Oct 13, 11:41 AM CDT	Severe Thunderstorm Warning	JAN	Lowndes	49 min
Oct 13, 11:54 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	51 min
Oct 13, 12:18 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	57 min
Oct 13, 12:31 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	44 min
Oct 13, 12:35 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	25 min
Oct 13, 12:46 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Scott, Smith	59 min
Oct 13, 12:46 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	59 min
Oct 13, 12:46 PM CDT	Tornado Warning	JAN	Marion	29 min
Oct 13, 12:50 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	55 min
Oct 13, 1:08 PM CDT	Tornado Warning	JAN	Covington, Jefferson Davis, Lamar, Marion	47 min
Oct 13, 1:13 PM CDT	Tornado Warning	JAN	Clay	32 min
Oct 13, 1:24 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	66 min
Oct 13, 1:36 PM CDT	Tornado Warning	JAN	Forrest	39 min
Oct 13, 1:41 PM CDT	Flash Flood Warning	JAN	Montgomery	2 hr
Oct 13, 1:41 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw, Neshoba, Winston	64 min
Oct 13, 1:41 PM CDT	Severe Thunderstorm Warning	JAN	Newton	64 min
Oct 13, 1:44 PM CDT	Tornado Warning	JAN	Jasper	31 min
Oct 13, 1:51 PM CDT	Tornado Warning	JAN	Covington, Jones	39 min
Oct 13, 2:04 PM CDT	Severe Thunderstorm Warning	JAN	Webster	41 min
Oct 13, 2:09 PM CDT	Tornado Warning	JAN	Oktibbeha	51 min
Oct 13, 2:12 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	48 min
Oct 13, 2:24 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper	66 min
Oct 13, 2:29 PM CDT	Severe Thunderstorm Warning	JAN	Clay	46 min
Oct 13, 2:31 PM CDT	Tornado Warning	JAN	Jones	29 min
Oct 13, 2:34 PM CDT	Tornado Warning	JAN	Clarke, Jasper	56 min
Oct 13, 2:36 PM CDT	Tornado Warning	JAN	Kemper	24 min
Oct 13, 2:38 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	37 min
Oct 13, 2:56 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lowndes, Noxubee	64 min
Oct 13, 2:56 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	64 min
Oct 13, 2:56 PM CDT	Tornado Warning	JAN	Jones	34 min
Oct 13, 3:03 PM CDT	Tornado Warning	JAN	Lauderdale	57 min
Oct 13, 3:16 PM CDT	Flash Flood Warning	JAN	Clarke, Clay, Forrest, Jasper, Jones, Kemper and 8 more	119 min
Oct 13, 3:20 PM CDT	Severe Thunderstorm Warning	JAN	Clay	25 min
Oct 13, 3:26 PM CDT	Tornado Warning	JAN	Lowndes, Noxubee	34 min
Oct 13, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	44 min
Oct 13, 3:39 PM CDT	Tornado Warning	JAN	Clarke	36 min
Oct 13, 6:07 PM CDT	Flash Flood Warning	JAN	Forrest	113 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2001 Every severe thunderstorm warning in 2001

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.