Isolated severe thunderstorms developed in an unstable atmosphere over sections of southeast Louisiana as a weak disturbance and strong upper level jet affected the area.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LIX wrote it up.
Isolated severe thunderstorms developed in an unstable atmosphere over sections of southeast Louisiana as a weak disturbance and strong upper level jet affected the area.
The local office's own words before the first event, 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 the first event at Nov 21, 4:10 PM CST, 3 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NEW ORLEANS LA 410 PM CST WED NOV 21 2007 .DISCUSSION MAIN FORECAST CONCERNS CONTINUE TO CENTER AROUND CONVECTION TONIGHT AND AGAIN SUNDAY INTO EARLY MONDAY. THE SCATTERED CONVECTION THAT DEVELOP ACROSS THE FORECAST AREA THIS AFTERNOON AND PRODUCED ISOLATED HAIL AND WIND DAMAGE IN SOUTHWEST MISSISSIPPI IS BEGINNING TO MOVE OUT OF THE AREA AS IT PUSHES OFF TO THE EAST NORTHEAST. HOWEVER ADDITIONAL CONVECTION IS EXPECTED OVERNIGHT AS THE CONVECTION CURRENTLY OVER EAST TEXAS AND WESTERN LOUISIANA PROGRESSES TO THE EAST. THE CONVECTION HAS BEEN ENHANCED TODAY BY A JET MAX MOVING AROUND THE BASE OF AN UPPER TROUGH TRAVERSING THE CENTRAL PLAINS...A WEAK DISTURBANCE MOVING OUT OF COASTAL TEXAS AS WELL AS RATHER SHEARED WIND ENVIRONMENT. IT APPEARS THAT THE BEST DYNAMICS WILL REMAIN NORTH OF THE FORECAST AREA TONIGHT WITH THIS SYSTEM...HOWEVER ISOLATED STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE...ESPECIALLY ACROSS THE NORTH ZONES. A STRONG COLD FRONT ASSOCIATED WITH THIS SYSTEM AND CURRENTLY MOVING ACROSS ARKANSAS AND NORTHEAST TEXAS WILL PUSH ACROSS THE FORECAST AREA AFTER MIDNIGHT TONIGHT AND THROUGH EARLY THURSDAY MORNING. LINGERING CONVECTION CAN BE EXPECTED ACROSS COASTAL AREAS AND THE ADJACENT COASTAL WATERS THROUGH THURSDAY MORNING. IN THE WAKE OF THIS FRONT MUCH COOLER CONDITIONS WILL PREVAIL WITH HIGH ONLY IN THE 50S AND 60S THURSDAY INTO SATURDAY. RAIN WILL MOVE BACK INTO THE PICTURE ON SATURDAY AS WARM AIR ADVECTION RETURNS TO THE GULF COAST REGION. ANOTHER SYSTEM...THIS ONE QUITE VIGOROUS...IS FORECAST TO EJECT OUT OF THE SOUTHWEST CONUS OR NORTHERN MEXICO LATE OVER THE WEEKEND AND MOVE ACROSS TEXAS/SOUTHERN PLAINS AND THE LOWER MISSISSIPPI VALLEY LATE SUNDAY INTO MONDAY. CYCLOGENESIS IS FORECAST TO TAKE PLACE OVER THE NORTHWEST GULF AS THIS UPPER TROUGH APPROACHES AND BEGINS TO TAKE ON A NEGATIVE TILT. THIS LOW IS THEN FORECAST TO TRACK NORTHEAST ACROSS LOUISIANA AND MISSISSIPPI LATE SUNDAY AND SUNDAY NIGHT. AS IT LOOKS NOW...THERE WILL BE A THREAT OF SEVERE THUNDERSTORMS AND POSSIBLY HEAVY RAIN SUNDAY AND SUNDAY NIGHT ALTHOUGH THE TIMING WITH THIS SYSTEM IS A BIT UNCERTAIN. && .AVIATION... MVFR TO OCCASIONAL IFR CONDITIONS ARE EXPECTED THROUGH TONIGHT DUE TO CEILING AND OCCASIONAL CONVECTION. && .MARINE... SMALL CRAFT ADVISORY CONDITIONS ARE EXPECTED TO DEVELOP BEHIND THE COLD FRONT DURING THE DAY THURSDAY ACROSS THE GULF COASTAL WATERS AND OVER LAKES PONTCHARTRAIN AND MAUREPAS THURSDAY NIGHT. SMALL CRAFT CONDITIONS WILL PERSIST OVER THE GULF COASTAL WATERS THROUGH FRIDAY. && .PRELIMINARY POINT TEMPS/POPS... MCB 51 56 37 56 / 70 20 10 10 BTR 53 59 39 58 / 70 20 10 10 MSY 59 62 45 58 / 60 30 10 10 GPT 58 64 41 58 / 60 40 10 10 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...NONE. GM...NONE. MS...NONE. GM...NONE. && 11
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
246 PM CST WED NOV 21 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0240 PM HAIL OSYKA 31.01N 90.47W
11/21/2007 E1.75 INCH PIKE MS LAW ENFORCEMENT
STATE POLICE REPORTED GOLF BALL SIZE HAIL ON INTERSTATE
55 AT EXIT 1.
&&
92/JSSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
325 PM CST WED NOV 21 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM HAIL 5 S TYLERTOWN 31.04N 90.14W
11/21/2007 E0.75 INCH WALTHALL MS LAW ENFORCEMENT
PENNY SIZE HAIL COVERING GROUND.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
341 PM CST WED NOV 21 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM TSTM WND GST 3 SE TYLERTOWN 31.09N 90.11W
11/21/2007 E0.00 MPH WALTHALL MS LAW ENFORCEMENT
SEVERAL TREES BLOWN DOWN NEAR THE COMMUNITY OF LEXIE.
0330 PM TSTM WND DMG SE TYLERTOWN 31.12N 90.14W
11/21/2007 WALTHALL MS LAW ENFORCEMENT
SEVERAL TREES BLOWN DOWN ON HIGHWAY 48.
&&The national radar mosaic for the moment the first event began.
3 thunderstorm wind. Local standard time, as filed.
Trees were blown down along Highway 418.
A tree was knocked down on Jones-Vaughn Creek Road.
Tree were blown down on Highway 78.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Louisiana in 2007Every state in 2007This day in weather historyWarnings in Louisiana, November 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 66214, 66215, 66216.