Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 89, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 29, 2021, 5:20 PM CDT for Harrison County, Mississippi. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 29, 2021, 5:20 PM CDT (22:20 UTC)
- Expired
- Aug 29, 2021, 10:30 PM CDT
- In force
- 5 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
County Harrison County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.3 hours before the alert went out and 61 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
- 3256 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted.
606
WGUS54 KLIX 292220
FFWLIX
MSC047-300130-
/O.NEW.KLIX.FF.W.0089.210829T2220Z-210830T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
520 PM CDT Sun Aug 29 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Central Harrison County in southern Mississippi...
* Until 830 PM CDT.
* At 520 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 2 to 4 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by heavy rainfall coupled with
storm surge.
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, Long Beach, Lyman and Gulfport Airport.
This includes the following Interstates...
Interstate 10 in Mississippi between mile markers 27 and 40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3048 8903 3042 8894 3040 8887 3038 8901
3037 8908 3036 8909 3036 8910 3034 8918
3041 8923 3056 8929 3062 8931 3063 8922
FLASH FLOOD...RADAR INDICATED
$$
TD2 follow-up statements
930
WGUS54 KLIX 300124
FFWLIX
MSC047-300330-
/O.EXT.KLIX.FF.W.0089.000000T0000Z-210830T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
824 PM CDT Sun Aug 29 2021
The National Weather Service in New Orleans has extended the
* Flash Flood Warning for...
Central Harrison County in southern Mississippi...
* Until 1030 PM CDT.
* At 824 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 2 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Gulfport, Biloxi, Long Beach, Lyman and Gulfport Airport.
This includes the following Interstates...
Interstate 110 in Mississippi near mile marker 1.
Interstate 10 in Mississippi between mile markers 26 and 40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3048 8903 3042 8894 3040 8887 3038 8901
3037 8908 3036 8909 3036 8910 3034 8918
3041 8923 3056 8929 3062 8931 3063 8922
FLASH FLOOD...RADAR INDICATED
$$
CAB008
WGUS74 KLIX 300322
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
1022 PM CDT Sun Aug 29 2021
MSC047-300332-
/O.EXP.KLIX.FF.W.0089.000000T0000Z-210830T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison MS-
1022 PM CDT Sun Aug 29 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 1030 PM CDT THIS EVENING FOR
CENTRAL HARRISON COUNTY...
The heavy rain has ending for now. Flooding is no longer expected to
pose a threat at this time however additional flood warnings could
be needed later tonight. Please continue to heed remaining road
closures.
A Flash Flood Watch remains in effect until 700 AM CDT Tuesday for
portions of southeast Louisiana and Mississippi.
LAT...LON 3048 8903 3042 8894 3040 8887 3038 8901
3037 8908 3036 8909 3036 8910 3034 8918
3041 8923 3056 8929 3062 8931 3063 8922
$$
CABThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 6:21 AM CDT | Tornado Warning | LIX | Hancock, Harrison | 24 min |
| Aug 29, 8:10 AM CDT | Tornado Warning | LIX | Jackson | 24 min |
| Aug 29, 2:15 PM CDT | Tornado Warning | LIX | Hancock, Harrison, Pearl River | 15 min |
| Aug 29, 3:07 PM CDT | Tornado Warning | LIX | Hancock | 23 min |
| Aug 29, 5:12 PM CDT | Tornado Warning | LIX | Harrison | 33 min |
| Aug 29, 6:09 PM CDT | Flash Flood Warning | LIX | Hancock, Harrison | 8 hr |
| Aug 29, 6:25 PM CDT | Tornado Warning | LIX | Hancock | 35 min |
| Aug 29, 6:54 PM CDT | Tornado Warning | LIX | Hancock, Pearl River | 36 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; the sounding from the Mesonet's radiosonde archive.