Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 120, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Sep 15, 2021, 8:11 AM CDT for Harrison County, Mississippi. It was in force for 5 hr. 1 report 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 15, 2021, 8:11 AM CDT (13:11 UTC)
- Expired
- Sep 15, 2021, 12:45 PM CDT
- In force
- 5 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Harrison County, MS
The radar
The Mobile radar (KMOB), 75 km from the middle of the area, began a volume at 13:15 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 15, 8:12 AM CDT | FLASH FLOOD | 3 Ene Gulfport, MS | ROADS FLOODED AROUND GULFPORT. |
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, 1.2 hours before the alert went out and 73 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
- 84 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
073
WGUS54 KLIX 151311
FFWLIX
MSC047-151615-
/O.NEW.KLIX.FF.W.0120.210915T1311Z-210915T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
811 AM CDT Wed Sep 15 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Eastern Harrison County in southern Mississippi...
* Until 1115 AM CDT.
* At 811 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. The expected rainfall rate is 1.25 to 2.5 inches in 1
hour. Additional rainfall amounts of 1 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Gulfport, Biloxi, St. Martin, D'iberville, Lyman, Latimer 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 34 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3063 8913 3065 8903 3060 8889 3043 8888
3043 8892 3043 8893 3042 8895 3043 8899
3042 8899 3042 8901 3041 8899 3041 8893
3042 8890 3041 8891 3041 8888 3039 8888
3039 8900 3037 8908 3036 8910
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1.25-2.5 INCHES IN 1 HOUR
$$
CAB1 follow-up statement
029
WGUS54 KLIX 151608
FFWLIX
MSC047-151745-
/O.EXT.KLIX.FF.W.0120.000000T0000Z-210915T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
1108 AM CDT Wed Sep 15 2021
The National Weather Service in New Orleans has extended the
* Flash Flood Warning for...
Eastern Harrison County in southern Mississippi...
* Until 1245 PM CDT.
* At 1108 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 6 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Gulfport, Biloxi, St. Martin, D'iberville, Lyman, Latimer and
Gulfport Airport.
This includes the following Interstates...
Interstate 110 in Mississippi near mile marker 1...and
between mile markers 3 and 4.
Interstate 10 in Mississippi between mile markers 34 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3063 8913 3065 8903 3060 8889 3043 8888
3043 8892 3043 8893 3042 8895 3043 8899
3042 8899 3042 8901 3041 8899 3041 8893
3042 8890 3041 8891 3041 8888 3039 8888
3039 8900 3037 8908 3036 8910
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 6:19 AM CDT | Areal Flood Advisory | LIX | Hancock, Harrison, Pearl River | 45 min |
| Sep 15, 6:22 AM CDT | Tornado Warning | LIX | Hancock, Pearl River | 23 min |
| Sep 15, 7:04 AM CDT | Flash Flood Warning | LIX | Hancock, Pearl River | 3 hr |
| Sep 15, 7:45 AM CDT | Flash Flood Warning | LIX | Hancock, Harrison, Jackson, Pearl River | 3 hr |
| Sep 15, 8:22 AM CDT | Flash Flood Warning | LIX | Jackson | 6 hr |
| Sep 15, 8:37 AM CDT | River Flood Warning | LIX | Pike | 37 hr |
| Sep 15, 8:52 AM CDT | River Flood Warning | LIX | Hancock | 28 hr |
| Sep 15, 8:52 AM CDT | River Flood Warning | LIX | Harrison | 43 hr |
| Sep 15, 9:02 AM CDT | River Flood Warning | LIX | Pike, Walthall | 46 hr |
| Sep 15, 9:08 AM CDT | River Flood Warning | LIX | Hancock, Pearl River | 5 days |
| Sep 15, 9:08 AM CDT | River Flood Warning | LIX | Hancock, Pearl River | 7 days |
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.