Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 57, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Jun 21, 2021, 5:55 PM CDT for Hancock County, Harrison County, Mississippi. It was in force for 3 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
- Jun 21, 2021, 5:55 PM CDT (22:55 UTC)
- Expired
- Jun 21, 2021, 9:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hancock County, MS, Harrison County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.9 hours before the alert went out and 25 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
- 730 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 990 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
878
WGUS54 KLIX 212255
FFWLIX
MSC045-047-220200-
/O.NEW.KLIX.FF.W.0057.210621T2255Z-210622T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
555 PM CDT Mon Jun 21 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Central Hancock County in southern Mississippi...
Northwestern Harrison County in southern Mississippi...
* Until 900 PM CDT.
* At 555 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2.5 inches of
rain have fallen. The expected rainfall rate is 1 to 3 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...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...
Diamondhead, Kiln, Stennis Space Center and Pearlington.
This includes the following Interstates...
Interstate 10 in Mississippi between mile markers 2 and 8.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3050 8954 3061 8934 3064 8923 3048 8922
3028 8962 3031 8963 3032 8963 3034 8963
3035 8964 3035 8965 3038 8966
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR
$$
CAB1 follow-up statement
465
WGUS74 KLIX 220049
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
749 PM CDT Mon Jun 21 2021
MSC045-220059-
/O.CAN.KLIX.FF.W.0057.000000T0000Z-210622T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock MS-
749 PM CDT Mon Jun 21 2021
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL HANCOCK COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 3061 8934 3064 8923 3048 8922 3042 8934
3044 8934 3049 8934 3050 8934 3058 8934
3059 8934
$$
MSC047-220200-
/O.CON.KLIX.FF.W.0057.000000T0000Z-210622T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison MS-
749 PM CDT Mon Jun 21 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR NORTHWESTERN HARRISON COUNTY...
At 749 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1.5 and 4 inches of rain have
fallen. The expected rainfall rate is 0.5 to 1.5 inches in 1 hour.
Additional rainfall amounts of 0.5 to 1.5 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...
mainly rural areas of Northwestern Harrison County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3061 8934 3064 8923 3048 8922 3042 8934
3044 8934 3049 8934 3050 8934 3058 8934
3059 8934
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5-1.5 INCHES IN 1 HOUR
$$
CABThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:11 PM CDT | Areal Flood Advisory | LIX | Harrison | 91 min |
| Jun 21, 2:55 PM CDT | Flash Flood Warning | LIX | Harrison, Jackson | 67 min |
| Jun 21, 4:36 PM CDT | Special Weather Statement | LIX | Hancock, Pearl River | 24 min |
| Jun 21, 4:57 PM CDT | Areal Flood Advisory | LIX | Hancock, Harrison, Pearl River | 3 hr |
| Jun 21, 5:18 PM CDT | Severe Thunderstorm Warning | LIX | Hancock | 42 min |
| Jun 21, 5:49 PM CDT | Areal Flood Advisory | LIX | Hancock, Harrison | 3 hr |
| Jun 21, 5:50 PM CDT | Special Weather Statement | LIX | Amite | 25 min |
| Jun 21, 5:55 PM CDT | Special Weather Statement | LIX | Hancock, Harrison | 50 min |
| Jun 21, 6:24 PM CDT | Special Weather Statement | LIX | Amite, Pike | 66 min |
| Jun 21, 6:32 PM CDT | Special Weather Statement | LIX | Jackson | 58 min |
| Jun 21, 6:51 PM CDT | Flash Flood Warning | LIX | Harrison, Jackson | 3 hr |
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.