Alert archive / Louisiana / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 373, NWS Jackson, MS

May 17, 2003East Carroll Parish, Madison Parish, Louisiana; Issaquena County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 17, 2003, 6:17 AM CDT for East Carroll Parish, Madison Parish, Louisiana; Issaquena County, Mississippi. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 17, 2003, 6:17 AM CDT (11:17 UTC)
Expired: May 17, 2003, 7:15 AM CDT
In force: 58 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

Counties East Carroll Parish, LA, Madison Parish, LA, Issaquena County, MS

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 17, 4:45 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 11.3 hours before the alert went out and 107 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: 2424 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 11.1

Open this sounding in Storm Lab

The text

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

586 
WUUS54 KJAN 171117
SVRJAN
LAC035-065-MSC055-171215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
616 AM CDT SAT MAY 17 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CARROLL PARISH IN NORTHEAST LOUISIANA
  MADISON PARISH IN NORTHEAST LOUISIANA
  ISSAQUENA COUNTY IN WEST CENTRAL MISSISSIPPI

* UNTIL 715 AM CDT

* AT 616 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LINE OF SEVERE THUNDERSTORMS FROM 9 MILES NORTH OF LAKE          
  PROVIDENCE TO 17 MILES WEST OF TALLULAH...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL...
  BE NEAR LAKE PROVIDENCE AT 625 AM CDT
  BE NEAR TRANSYLVANIA AT 635 AM CDT
  BE NEAR MAYERSVILLE AT 640 AM CDT
  BE NEAR TALLULAH...RICHMOND AT 655 AM CDT

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

WINDS FROM 60 TO 70 MPH ARE LIKELY WITH THESE STORMS.

HAIL TO THE SIZE OF NICKELS IS LIKELY WITH THESE STORMS.

LAT...LON 3302 9101 3300 9093 3260 9104 3250 9113
          3230 9114 3231 9147 3299 9122

$$

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 May 17, 3:55 AM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, May 17, 3:55 AM CDT, 2 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
355 AM CDT SAT MAY 17 2003

FORECAST ALL HINGING ON MOVEMENT OF CLOSED/CUTOFF UPPER LOW CENTER
OVER NWRN AR THAT IS FORECAST TO SINK SEWD ALONG THE MS RIVER TO
NEAR NATCHEZ BY SUNDAY MORNING. THIS FEATURE WILL BE SLOWLY FILLING
AS TIME PASSES WITH THE MID LEVEL COLD CORE RUNNING ONLY ABOUT -11C
AT 500MB. THIS SYSTEM IS EXPECTED TO MOVE TO NEAR THE COAST BY
MONDAY MORNING BEFORE PUSHING ALL THE WAY TO YUCATAN LATE TUESDAY.

CURRENTLY...CONVECTION BAND THAT ENTERED THE DELTA AROUND MIDNIGHT
WAS GETTING HUNG UP OVER ABOUT THE SAME LOCATIONS THIS MORNING FROM
RUSTON LA TO CLEVELAND MS. LOW LEVEL MOISTURE CONVERGENCE AHEAD OF
THE TSRA MOVES ONLY TO NEAR A GRENADA TO NATCHEZ LINE ABOUT MID
MORNING WHEN DIURNAL HEATING WILL AGAIN START TO EXPAND THE COVERAGE
AREA. DEEPER MOISTURE HOLDING OFF UNTIL AROUND 18Z FOR THE NATCHEZ
TRACE CORRIDOR AS UPPER DIVERGENCE INCREASES. GRADUALLY WEAKENING
850MB JET DROPS FROM 45KT THIS MORNING TO 30KT LATER IN THE
AFTERNOON HOWEVER CAPES LIKELY TO REACH 2500-3000J/KG...LIFTED
INDEXES -8C...AND 500-700MB LAPSE RATES NEAR 7C SHOULD PROVIDE
PLENTY OF ACTION EAST OF THE ONGOING TSRA BY MIDDAY.

BIGGEST RISK WILL PROBABLY BECOME HEAVY RAIN WITH TRAINING CLUSTERS
OF STORMS AND WILL MENTION HEAVY RAIN/GUSTY WINDS WITH ALL ZONES.
AGREE WITH MOS TREND OF COOLER MAX TEMPS FROM NW TO SE TODAY AND
SUNDAY WITH LOWERING THICKNESS FIELDS OVER REGION.  SWATH OF 2.0+
PRECIPITABLE WATER VALUES SPREADS SEWD TODAY DROPPING TO 1.7 OVER
THE ERN HALF OF MS ON SUNDAY. AS UPPER LOW PULLS AWAY FROM THE
REGION SUNDAY NIGHT/MONDAY...EXPECT RAPID DROP OFF IN SHRA COVERAGE
AND WILL LOWER/REMOVE POPS FOR PART OF MONDAY AS RAPID WARMING IN
THE MID LEVELS RE-ESTABLISHES CAPPING ENVIRONMENT.

SOME RETURN TO DIURNAL POPS ON TUESDAY AS SHORTWAVE UPPER RIDGE
PIVOTS OVER THE CWFA...AND A WEAK IMPULSE BRUSHES THE REGION. DECENT
MOISTURE LINGERING OVER THE AREA WITH SURFACE DEWPOINTS REMAINING
65-70F. FINALLY A SURFACE FRONT/TROUGH SHIFTS INTO MS AND STALLS ON
WED AS THE UPPER RIDGE LINE SINKS NEAR THE COAST.

JAN TT 084/069 082/066 085 00754
    BBEEB 069/087 069/088 069/087 068/086 066 32232444342
MEI TT 087/069 085/066 084 00754
    BBEEB 068/088 068/088 068/087 067/087 065 32232444342

.JAN...
AR...NONE
LA...NONE
MS...NONE

Hazardous weather outlook, May 17, 5:40 AM CDT, 37 minutes before

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
181200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
540 AM CDT SAT MAY 17 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI...
NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS

.DAY ONE...TODAY AND TONIGHT...

...THUNDERSTORMS...
SCATTERED SEVERE THUNDERSTORMS WILL BE POSSIBLE TODAY...GENERALLY
TO THE NORTHWEST OF A LINE FROM JONESVILLE LOUISIANA...TO
VICKSBURG TO EUPORA  MISSISSIPPI. FARTHER SOUTHEAST...ISOLATED
SEVERE THUNDERSTORMS MAY OCCUR GENERALLY SOUTHEAST OF THE NATCHEZ
TRACE PARKWAY DURING THE AFTERNOON.
THE PRIMARY RISK FROM THE THESE STORMS WILL BE DAMAGING WIND
GUSTS OF 60 TO 70 MPH AND LARGE HAIL TO THE SIZE OF
GOLFBALLS...AN ISOLATED TORNADO ALSO CANNOT BE RULED OUT.

A MOIST AND UNSTABLE AIRMASS REMAINS IN PLACE AHEAD OF A STRONG
UPPER LOW MOVING SOUTHEASTWARD TOWARD THE LOWER MISSISSIPPI
VALLEY. EVEN THOUGH THE ASSOCIATED COLD FRONT REMAINED IN EASTERN
TEXAS... THUNDERSTORM OUTFLOW BOUNDARIES EXTENDED WELL INTO NORTH
AND WEST MISSISSIPPI. THUNDERSTORMS OVER THE DELTA REGION
EXTENDED INTO CENTRAL LOUISIANA THIS MORNING AND THESE WILL
CONTINUE DEVELOPING EASTWARD DURING THE DAY. THE UPPER LOW IS
FORECAST TO WEAKEN SLIGHTLY BY TONIGHT AND THE STORMS SHOULD
GRADUALLY WEAKEN OVER EAST AND SOUTH MISSISSIPPI BY AROUND
MIDNIGHT AS THE OUTFLOW BOUNDARIES PUSH OFF TO THE SOUTHEAST OF
THE AREA.

...FLOODING...
WITH THE VERY MOIST AIRMASS IN PLACE...THERE WILL BE A POTENTIAL
FOR VERY HEAVY RAINFALL...ESPECIALLY WHERE THUNDERSTORMS MOVE
REPEATEDLY OVER THE SAME LOCATIONS FOR A FEW HOURS. PONDING OF
WATER ON ROADWAYS AND IN LOW LYING AREAS MAY OCCUR WITH RAINFALL
OF 1 TO 2 INCHES IN SHORT BURSTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

...DAYS TWO AND THREE...
THE SEVERE WEATHER POTENTIAL MAY CONTINUE DURING THE DAY SUNDAY
OVER PORTIONS OF SOUTHEAST MISSISSIPPI...GENERALLY SOUTHEAST OF A
MERIDIAN TO PRENTISS LINE. HOWEVER...IT IS EXPECTED THAT THE
UPPER LEVEL LOW PRESSURE SYSTEM WILL WEAKEN AND THE SEVERE
WEATHER RISK SHOULD GRADUALLY LESSEN HOWEVER...A PULSE SEVERE
STORM WITH DOWNBURST WINDS AND HAIL TO THE SIZE OF NICKELS CANNOT
BE RULED OUT AT THIS TIME FOR SUNDAY AFTERNOON AND EVENING.  ANY
LINGERING STORMS SHOULD REMAIN BELOW SEVERE LIMITS LATER SUNDAY
NIGHT THROUGH MONDAY NIGHT.

...DAYS FOUR THROUGH SEVEN...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER
OPERATIONS...WILL BE NEEDED THROUGH AT LEAST EARLY TONIGHT.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

In the hours before

Local storm report, May 17, 12:53 AM CDT, 5 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1253 AM CDT SAT MAY 17 2003

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

1248 AM    PACE                      MS   0.75 INCH HAIL
05/17/03   BOLIVAR                        REPORTED BY BOLIVAR
                                          COUNTY EMA.

Local storm report, May 17, 1:00 AM CDT, 5 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
100 AM CDT SAT MAY 17 2003

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

1245 AM    LAKE VILLAGE              AR   1.00 INCH HAIL
05/17/03   CHICOT                         REPORTED BY CHICOT COUNTY
                                          EMA.

Local storm report, May 17, 1:30 AM CDT, 4 hours 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
130 AM CDT SAT MAY 17 2003

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

1240 AM    GUNNISON                  MS   WIND DAMAGE
05/17/03   BOLIVAR                        A VERY LARGE OAK TREE WAS
                                          DOWNED AND TOOK OUT
                                          SEVERAL POWER LINES.
                                          REPORTED BY BOLIVAR
                                          COUNTY EMA.

Local storm report, May 17, 1:41 AM CDT, 4 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
141 AM CDT SAT MAY 17 2003

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

1240 AM    GUNNISON                  MS   WIND DAMAGE
05/17/03   BOLIVAR                        A VERY LARGE OAK TREE WAS
                                          DOWNED AND TOOK OUT
                                          SEVERAL POWER LINES.
                                          REPORTED BY BOLIVAR
                                          COUNTY EMA.

1245 AM    LAKE VILLAGE              AR   WIND DAMAGE
05/17/03   CHICOT                         A FEW TREES DOWN.
                                          REPORTED BY CHICOT COUNTY
                                          SHERIFFS OFFICE.

Local storm report, May 17, 4:26 AM CDT, 1 hour 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
426 AM CDT SAT MAY 17 2003

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

0420 AM    1 E HAMBURG               AR   WIND DAMAGE
05/17/03   ASHLEY                         NUMEROUS TREES DOWN, SHED
                                          BLOWN ONTO HOUSE.
                                          REPORTED BY ASHLEY COUNTY
                                          SHERIFFS OFFICE.

Local storm report, May 17, 4:57 AM CDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
457 AM CDT SAT MAY 17 2003

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

0415 AM    CROSSETT                  AR   0.75 INCH HAIL
05/17/03   ASHLEY                         REPORTED BY POLICE.

0415 AM    CROSSETT                  AR   WIND DAMAGE
05/17/03   ASHLEY                         NUMEROUS TREES DOWN CITY
                                          WIDE. REPORTED BY POLICE.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 11:28 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	47 min
May 17, 12:15 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	60 min
May 17, 4:26 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	44 min
May 17, 4:32 AM CDT	Tornado Warning	JAN	Morehouse	43 min
May 17, 5:13 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse, Richland, West Carroll	62 min
May 17, 7:22 AM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Franklin	43 min
May 17, 9:10 AM CDT	Flash Flood Warning	JAN	Concordia	3 hr
May 16, 11:48 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	57 min
May 17, 12:41 AM CDT	Severe Thunderstorm Warning	JAN	Bolivar	59 min
May 17, 12:47 AM CDT	Severe Thunderstorm Warning	JAN	Washington	58 min
May 17, 12:57 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	58 min
May 17, 5:07 AM CDT	Severe Thunderstorm Warning	JAN	Washington	43 min
May 17, 5:37 AM CDT	Severe Thunderstorm Warning	JAN	Sunflower	43 min
May 17, 6:48 AM CDT	Severe Thunderstorm Warning	JAN	Sharkey	42 min
May 17, 7:08 AM CDT	Severe Thunderstorm Warning	JAN	Humphreys	42 min
May 17, 8:18 AM CDT	Severe Thunderstorm Warning	JAN	Warren	32 min
May 17, 9:49 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake	41 min
May 17, 10:01 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah	44 min
May 17, 10:12 AM CDT	Severe Thunderstorm Warning	JAN	Choctaw	28 min
May 17, 10:23 AM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott	62 min
May 17, 10:32 AM CDT	Severe Thunderstorm Warning	JAN	Hinds	58 min
May 17, 10:49 AM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Noxubee, Oktibbeha, Winston	41 min
May 17, 10:51 AM CDT	Severe Thunderstorm Warning	JAN	Neshoba	44 min
May 17, 11:03 AM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lincoln	62 min
May 17, 11:10 AM CDT	Severe Thunderstorm Warning	JAN	Kemper	45 min
May 17, 11:24 AM CDT	Severe Thunderstorm Warning	JAN	Scott	41 min
May 17, 11:32 AM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Newton, Scott	38 min
May 17, 12:07 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lincoln	38 min
May 17, 12:25 PM CDT	Tornado Warning	JAN	Lincoln	45 min
May 17, 12:57 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	28 min
May 17, 2:13 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson, Lincoln	42 min
May 17, 3:39 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	56 min
May 17, 3:46 PM CDT	Tornado Warning	JAN	Scott	44 min
May 17, 3:56 PM CDT	Tornado Warning	JAN	Lawrence	29 min
May 17, 4:06 PM CDT	Tornado Warning	JAN	Simpson, Smith	39 min
May 17, 4:10 PM CDT	Tornado Warning	JAN	Lauderdale, Newton	45 min
May 17, 4:15 PM CDT	Tornado Warning	JAN		40 min
May 17, 4:19 PM CDT	Tornado Warning	JAN	Kemper	61 min
May 17, 4:23 PM CDT	Tornado Warning	JAN	Jefferson Davis	32 min
May 17, 4:48 PM CDT	Tornado Warning	JAN	Covington	47 min
May 17, 4:54 PM CDT	Tornado Warning	JAN	Lauderdale	61 min
May 17, 4:57 PM CDT	Tornado Warning	JAN	Jefferson Davis	13 min
May 17, 5:21 PM CDT	Tornado Warning	JAN	Kemper	29 min
May 17, 5:35 PM CDT	Tornado Warning	JAN	Covington, Jones	60 min
May 17, 5:50 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	25 min
May 17, 6:15 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	45 min
May 17, 6:23 PM CDT	Tornado Warning	JAN	Jasper	37 min
May 17, 6:38 PM CDT	Tornado Warning	JAN	Forrest, Jones	42 min
May 17, 6:41 PM CDT	Tornado Warning	JAN	Clarke	44 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2003 Severe Thunderstorm Warnings in Mississippi, 2003 Every severe thunderstorm warning in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.