Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 125, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Sep 17, 2021, 9:37 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 17, 2021, 9:37 AM CDT (14:37 UTC)
- Expired
- Sep 17, 2021, 12:32 PM CDT
- In force
- 3 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Harrison County, MS, Jackson County, MS
The radar
The Mobile radar (KMOB), 70 km from the middle of the area, began a volume at 14:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 17, 10:12 AM CDT | FLASH FLOOD | 4 Wnw Saint Martin, MS | CEDAR LAKE ROAD BRIDGE CLOSED DUE TO WATER ON THE ROAD. |
| Sep 17, 10:17 AM CDT | FLASH FLOOD | 3 W Saint Martin, MS | REPORT OF CARS FLOODED AND STALLED OUT NORTH OF THE BAY ALONG POPPS FERRY ROAD IN BILOXI DUE TO WATER COVERING ROADS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 2.6 hours before the alert went out and 78 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
- 1826 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
655
WGUS54 KLIX 171437
FFWLIX
MSC047-059-171745-
/O.NEW.KLIX.FF.W.0125.210917T1437Z-210917T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
937 AM CDT Fri Sep 17 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Southeastern Harrison County in southern Mississippi...
Southwestern Jackson County in southern Mississippi...
* Until 1245 PM CDT.
* At 937 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Gulfport, Biloxi, Ocean Springs, Long Beach, St. Martin,
D'iberville, Latimer, Gulf Hills, Gulf Park Estates, Lyman and
Gulfport Airport.
This includes the following Interstates...
Interstate 110 in Mississippi near mile marker 1...and
between mile markers 3 and 4.
Interstate 10 in Mississippi between mile markers 33 and 56.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3050 8903 3055 8888 3054 8877 3034 8870
3038 8881 3039 8881 3038 8877 3041 8884
3043 8885 3042 8901 3041 8899 3042 8890
3039 8886 3039 8900 3035 8913 3050 8912
FLASH FLOOD...RADAR INDICATED
$$
CAB3 follow-up statements
131
WGUS74 KLIX 171512
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
1012 AM CDT Fri Sep 17 2021
MSC047-059-171745-
/O.CON.KLIX.FF.W.0125.000000T0000Z-210917T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison MS-Jackson MS-
1012 AM CDT Fri Sep 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN HARRISON AND SOUTHWESTERN JACKSON
COUNTIES...
At 1012 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Gulfport, Biloxi, Ocean Springs, Long Beach, St. Martin,
D'iberville, Latimer, Gulf Hills, Gulf Park Estates and Gulfport
Airport.
This includes the following Interstates...
Interstate 110 in Mississippi near mile marker 1...and
between mile markers 3 and 4.
Interstate 10 in Mississippi between mile markers 35 and 56.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3049 8889 3055 8888 3054 8877 3034 8870
3038 8881 3039 8881 3038 8877 3041 8884
3042 8885 3042 8883 3043 8885 3042 8896
3043 8899 3042 8901 3041 8899 3042 8891
3039 8886 3039 8900 3035 8913 3050 8907
FLASH FLOOD...RADAR INDICATED
$$
CAB176
WGUS74 KLIX 171638
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
1138 AM CDT Fri Sep 17 2021
MSC047-059-171745-
/O.CON.KLIX.FF.W.0125.000000T0000Z-210917T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison MS-Jackson MS-
1138 AM CDT Fri Sep 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN HARRISON AND SOUTHWESTERN JACKSON
COUNTIES...
At 1138 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 3 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Gulfport, Biloxi, St. Martin, D'iberville, Latimer and Gulf Hills.
This includes the following Interstates...
Interstate 110 in Mississippi near mile marker 1...and
between mile markers 3 and 4.
Interstate 10 in Mississippi between mile markers 45 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3046 8887 3044 8884 3043 8885 3043 8886
3043 8892 3043 8893 3042 8894 3042 8895
3043 8899 3042 8901 3041 8899 3041 8893
3042 8891 3041 8891 3041 8890 3039 8886
3039 8900 3037 8909 3043 8904
FLASH FLOOD...RADAR INDICATED
$$
CAB432
WGUS74 KLIX 171732
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
1232 PM CDT Fri Sep 17 2021
MSC047-059-171742-
/O.CAN.KLIX.FF.W.0125.000000T0000Z-210917T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison MS-Jackson MS-
1232 PM CDT Fri Sep 17 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HARRISON AND
SOUTHWESTERN JACKSON COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
A Flash Flood Watch remains in effect until 700 PM CDT Friday for
portions of southeast Louisiana and Mississippi.
LAT...LON 3046 8887 3044 8884 3043 8885 3043 8886
3043 8892 3043 8893 3042 8894 3042 8895
3043 8899 3042 8901 3041 8899 3041 8893
3042 8891 3041 8891 3041 8890 3039 8886
3039 8900 3037 8909 3043 8904
$$
CABThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 6:07 AM CDT | Areal Flood Advisory | LIX | Amite, Pike | 3 hr |
| Sep 17, 7:04 AM CDT | Flash Flood Warning | LIX | Amite | 88 min |
| Sep 17, 9:17 AM CDT | Special Weather Statement | LIX | Harrison | 28 min |
| Sep 17, 1:39 PM CDT | Flash Flood Warning | LIX | Harrison, Jackson | 110 min |
Nearby
Flash Flood Warnings in Mississippi, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.