Alert archive / Louisiana / Flash Flood Warnings in 1993
Flash Flood Warning 1, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Jan 11, 1993, 2:40 AM CST for Orleans Parish, Saint Tammany Parish, Louisiana. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jan 11, 1993, 2:40 AM CST (08:40 UTC)
- Expired
- Jan 11, 1993, 6:45 AM CST
- In force
- 4 hr
- Issued by
- NWS New Orleans, LA
- Area
- Whole counties
Counties Orleans Parish, LA, Saint Tammany Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 8.7 hours before the alert went out and 23 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 439 m²/s²
- 0-3 km storm-relative helicity
- 633 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jan 10, 9:38 PM CST, 5 hours 2 minutes before
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</html>Special weather statement, Jan 10, 10:25 PM CST, 4 hours 15 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-110600- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 1025 PM CST SUN JAN 10 1993 AT 1025 PM A BAND OF THUNDERSTORMS...SOME STRONG WITH HEAVY RAINFALL CONTINUED OVER THE EAST HALF OF LAKE PONTCHARTRAIN AND EXTENDED OVER THE NEW ORLEANS AREA TO 25 MILES SOUTH OF NEW ORLEANS. THE HEAVIER RAINFALL WILL PRODUCE SOME LOCALIZED STREET FLOODING IN AND AROUND THE NEW ORLEANS AREA. MOTORIST SHOULD REMAIN ALERT FOR MINOR FLOODING OF STREETS AND UNDERPASSES. WIDELY SCATTERED THUNDERSTORMS WERE INCLUDED IN LIGHT RAIN OVER MOST OF SOUTHEAST NORTH OF LAKE PONTCHARTRAIN AND EXTENDED EAST INTO SOUTHEAST MISSISSIPPI TO NEAR POPLARVILLE AND GULFPORT. SCATTERED RAIN SHOWERS WERE OVER THE COASTAL SECTIONS OF SOUTHEAST LOUISIANA NEAR TERREBONNE BAY AND TIMBALIER BAY. WIDELY SCATTERED PATCHES OF LIGHT RAIN CONTINUED IN SOUTH MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.
Special weather statement, Jan 10, 10:25 PM CST, 4 hours 15 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-110600- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTION NATIONAL WEATHER SERVICE NEW ORLEANS LA 1025 PM CST SUN JAN 10 1993 AT 1025 PM A BAND OF THUNDERSTORMS...SOME STRONG WITH HEAVY RAINFALL CONTINUED OVER THE EAST HALF OF LAKE PONTCHARTRAIN AND EXTENDED OVER THE NEW ORLEANS AREA TO 25 MILES SOUTH OF NEW ORLEANS. THE HEAVIER RAINFALL WILL PRODUCE SOME LOCALIZED STREET FLOODING IN AND AROUND THE NEW ORLEANS AREA. MOTORIST SHOULD REMAIN ALERT FOR MINOR FLOODING OF STREETS AND UNDERPASSES. WIDELY SCATTERED THUNDERSTORMS WERE INCLUDED IN LIGHT RAIN OVER MOST OF SOUTHEAST LOUISIANA NORTH OF LAKE PONTCHARTRAIN AND EXTENDED EAST INTO SOUTHEAST MISSISSIPPI TO NEAR POPLARVILLE AND GULFPORT. SCATTERED RAIN SHOWERS WERE OVER THE COASTAL SECTIONS OF SOUTHEAST LOUISIANA NEAR TERREBONNE BAY AND TIMBALIER BAY. WIDELY SCATTERED PATCHES OF LIGHT RAIN CONTINUED IN SOUTH MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.
Special weather statement, Jan 10, 11:25 PM CST, 3 hours 15 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-110700- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 1125 PM CST SUN JAN 10 1993 AT 1125 PM A CLUSTER OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL WAS OCCURRING FROM JUST SOUTH OF SLIDELL SOUTH OVER EAST NEW ORLEANS. THE HEAVIER RAINFALL WILL PRODUCE SOME LOCALIZED STREET FLOODING IN AND AROUND THE NEW ORLEANS AREA. MOTORIST SHOULD REMAIN ALERT FOR MINOR FLOODING OF STREETS AND UNDERPASSES. STONG GUSTY WINDS WILL BE EXPERIENCED IN SOME OF THE STRONGER THUNDERSORMS. WIDELY SCATTERED THUNDERSTORMS WERE INCLUDED IN LIGHT RAIN OVER MOST OF SOUTHEAST LOUISIANA NORTH OF LAKE PONTCHARTRAIN AND EXTENDED NORTH AND EAST INTO MOST OF SOUTHEAST MISSISSIPPI EAST OF MCCOMB AND SOUTH OF HATTIESBURG. ELSEWHERE OVER SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI...PATCHY LIGHT RAIN AND LIGHT DRIZZLE...TOO LIGHT TO DETECTED BY RADAR WAS OCCURRING. THE THUNDERSTORMS WERE MOVING NNORTHEAST AT 35 MILES AN HOUR.
Special weather statement, Jan 11, 12:44 AM CST, 1 hour 56 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-110830- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 1244 AM CST MON JAN 11 1993 AT 1225 AM...A CLUSTER OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL HAD JUST PASSED TO THE EAST OF SLIDELL AND EXTENDED FROM BAY ST LOUIS MISSISSIPPI SOUTH INTO BRETON SOUND. OTHER WIDELY SCATTERED THUNDERSTORMS WERE IN SOUTHEAST LOUISIANA FROM JUST SOUTH OF NEW ORLEANS TO BETWEEN HOUMA AND GRAND ISLE. SOME LOCALIZED STREET FLOODING HAS BEEN REPORTED IN THE CHALMETTE AREA AND IN AND AROUND THE NEW ORLEANS AND SLIDELL AREAS. MOTORIST SHOULD REMAIN ALERT FOR FLOODING OF STREETS AND UNDERPASSES. STONG GUSTY WINDS WILL BE EXPERIENCED IN SOME OF THE STRONGER THUNDERSTORMS. THE THUNDERSTORMS WERE OCCURRING WITHIN AREAS OF MOSTLY LIGHT RAIN THAT COVERED MUCH OF SOUTHEAST LOUISIANA AND SOUTHEAST MISSISSIPPI. SHOWERS AND PATCHES OF RAIN WERE DEVELOPING BETWEEN LAFAYETTE AND BATON ROUGE. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
Special weather statement, Jan 11, 1:46 AM CST, 54 minutes before
LAZ008>010-012>014-MSZ010>014-ALZ016-110930- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE NEW ORLEANS LA 144 AM CST MON JAN 11 1993 AT 125 AM...A CLUSTER OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL CONTINUED BETWEEN SLIDELL AND BAY ST LOUIS MISSISSIPPI AND EXTENDED SOUTH INTO LAKE BORGNE. OTHER WIDELY SCATTERED THUNDERSTORMS WERE 25 MILES NORTHWEST OF GRAND ISLE AND OVER THE SOUTHERN PART OF LAKE PONTCHARTRAIN. THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL THAT WILL PRODUCE STREET FLOODING AND FLOODING OF LOW LYING AREAS. MOTORIST SHOULD REMAIN ALERT AND NOT DRIVE THROUGH FLOODED AREAS. ALSO...STONG GUSTY WINDS AND DANGEROUS LIGHTNING WILL BE EXPERIENCED IN SOME OF THE STRONGER THUNDERSTORMS. THE THUNDERSTORMS WERE OCCURRING WITHIN AREAS OF MOSTLY LIGHT RAIN THAT COVERED EXTREME SOUTHEAST LOUISIANA AND A LARGE PART SOUTHEAST MISSISSIPPI. SHOWERS AND PATCHES OF RAIN CONTINUED TO DEVELOP BETWEEN THE BATON ROUGE AREA SOUTHWEST TO VERMILION BAY. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 3:58 AM CST | Flash Flood Warning | LIX | Plaquemines, Saint Bernard | 5 hr |
Nearby
Flash Flood Warnings in Louisiana, 1993Every flash flood warning in 1993
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.