Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 207, NWS New Orleans, LA

August 14, 1999Hancock County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Aug 14, 1999, 6:39 PM CDT for Hancock County, Mississippi. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 14, 1999, 6:39 PM CDT (23:39 UTC)
Expired: Aug 14, 1999, 7:25 PM CDT
In force: 46 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Hancock County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 27 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: 1007 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 1433 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 14, 2:30 PM CDT, 4 hours 9 minutes earlier.

Area forecast discussion, Aug 14, 2:30 PM CDT, 4 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
230 PM CDT SAT AUG 14 1999

A WEAK COLD FRONT ACROSS CENTRAL LA AND MS WILL MOVE SOUTH TONIGHT
TO NEAR THE COAST AROUND SUNRISE SUNDAY. DRY AIR WILL MOVE OVER THE
AREA TONIGHT AND SUNDAY. MAX TEMPERATURES BEHIND THE FRONT WILL BE A
FEW DEGREES COOLER. THE DRIER AIR AND SLIGHTLY COOLER AIR WILL KEEP
THE HEAT INDEX BELOW 100 DEGREES SUNDAY AND MONDAY.

THE 500 MB HIGH OVER THE TEXAS PANHANDLE WILL MOVE E INTO AR AND OK.
SURFACE HIGH IS EXPECTED TO REMAIN OVER THE MID WEST THROUGH THE
FORECAST PERIOD. THIS WILL BEING INCREASING SUBSIDENCE OVER THE
AREA. WITH THE HIGH IN PLACE AND THE AIRMASS DRY EXPECT LITTLE
CLOUDINESS OR HAZE THROUGH MONDAY.

MCB 68/93/67/93 0000  BTR 72/94/72/94 0000
MSY 77/94/74/93 0000  BIX 77/96/77/94 0000

.NEW...NONE.
LA...NONE
MS...NONE.

23

In the hours before

Local storm report, Aug 14, 3:55 PM CDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
355 PM CDT SAT AUG 14 1999

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

0310 PM    POINTE COUPEE             LA   STRONG WINDS
                                          SHERIFFS OFFICE REPORTED
                                          TREES AND POWER LINES IN
                                          POINTE COUPEE PARISH ABOUT
                                          10 MILES S OF NEW ROADS.

Local storm report, Aug 14, 3:55 PM CDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
355 PM CDT SAT AUG 14 1999

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

0310 PM    NEW ROADS                 LA   WIND DAMAGE
08/14/99   POINTE COUPEE                  SHERIFFS OFFICE REPORTED
                                          TREES AND POWER LINES IN
                                          POINTE COUPEE PARISH ABOUT
                                          10 MILES S OF NEW ROADS.

Local storm report, Aug 14, 3:55 PM CDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
355 PM CDT SAT AUG 14 1999

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

0310 PM    NEW ROADS                 LA   WIND DAMAGE
08/14/99   POINTE COUPEE                  SHERIFFS OFFICE REPORTED
                                          TREES AND POWER LINES IN
                                          POINTE COUPEE PARISH ABOUT
                                          10 MILES S OF NEW ROADS.

Local storm report, Aug 14, 3:55 PM CDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
355 PM CDT SAT AUG 14 1999

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

0310 PM    POINTE COUPEE             LA   STRONG WINDS
                                          SHERIFFS OFFICE REPORTED
                                          TREES AND POWER LINES IN
                                          POINTE COUPEE PARISH ABOUT
                                          10 MILES S OF NEW ROADS.

Local storm report, Aug 14, 4:27 PM CDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
427 PM CDT SAT AUG 14 1999

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

0414 PM    MADISONVILLE             LA    WIND DAMAGE
08/14/99   ST TAMMANY                     POLICE DEPARTMENT REPORTED
                                          POWER LINES DOWN IN THE
                                          MADISONVILLE AREA

Local storm report, Aug 14, 4:27 PM CDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LOUISIANA
427 PM CDT SAT AUG 14 1999

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

0414 PM    MADISONVILLE             LA    WIND DAMAGE
08/14/99   ST TAMMANY                     POLICE DEPARTMENT REPORTED
                                          POWER LINES DOWN IN THE
                                          MADISONVILLE AREA

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 14, 2:59 PM CDT	Severe Thunderstorm Warning	LIX	Pointe Coupee	31 min
Aug 14, 4:07 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	33 min
Aug 14, 5:28 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	47 min
Aug 14, 6:11 PM CDT	Severe Thunderstorm Warning	LIX	Saint James, Saint John the Baptist	49 min
Aug 14, 6:26 PM CDT	Severe Thunderstorm Warning	LIX	Lafourche	49 min
Aug 14, 5:08 PM CDT	Severe Thunderstorm Warning	LIX	Jackson	47 min
Aug 14, 5:13 PM CDT	Tornado Warning	LIX	Pearl River	17 min
Aug 14, 5:33 PM CDT	Severe Thunderstorm Warning	LIX	Harrison	32 min
Aug 14, 6:03 PM CDT	Tornado Warning	LIX	Harrison	32 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1999 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.