Alert archive / Alabama / Flash Flood Warnings in 2018
Flash Flood Warning 1, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Apr 7, 2018, 1:06 AM CDT for Choctaw County, Alabama; Wayne County, Mississippi. It was in force for 4 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
- Apr 7, 2018, 1:06 AM CDT (06:06 UTC)
- Expired
- Apr 7, 2018, 5:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Choctaw County, AL, Wayne County, MS
The radar
The Mobile radar (KMOB), 132 km from the middle of the area, began a volume at 06:06 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.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 6.1 hours before the alert went out and 177 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
- 877 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 369 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.0
The text
As transmitted.
588
WGUS54 KMOB 070606
FFWMOB
ALC023-MSC153-071000-
/O.NEW.KMOB.FF.W.0001.180407T0606Z-180407T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
106 AM CDT SAT APR 7 2018
The National Weather Service in Mobile has issued a
* Flash Flood Warning for...
Southwestern Choctaw County in southwestern Alabama...
Northern Wayne County in southeastern Mississippi...
* Until 500 AM CDT
* At 104 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to three inches of rain have
already fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Waynesboro, Silas, Gilbertown and Toxey.
Additional rainfall amounts up to one inch are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3196 8811 3194 8812 3193 8810 3194 8807
3193 8805 3191 8813 3187 8813 3182 8818
3175 8814 3176 8810 3170 8809 3168 8894
3182 8894 3185 8865 3189 8848 3205 8845
$$1 follow-up statement
444
WGUS74 KMOB 070907
FFSMOB
Flash Flood Statement
National Weather Service Mobile AL
407 AM CDT SAT APR 7 2018
ALC023-MSC153-070917-
/O.CAN.KMOB.FF.W.0001.000000T0000Z-180407T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Wayne MS-
407 AM CDT SAT APR 7 2018
...THE FLASH FLOOD WARNING FOR SOUTHWESTERN CHOCTAW AND NORTHERN
WAYNE COUNTIES IS CANCELLED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3196 8811 3194 8812 3193 8810 3194 8807
3193 8805 3191 8813 3187 8813 3182 8818
3175 8814 3176 8810 3170 8809 3168 8894
3182 8894 3185 8865 3189 8848 3205 8845
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 10:06 PM CDT | Special Weather Statement | MOB | Choctaw | 39 min |
| Apr 6, 11:30 PM CDT | Areal Flood Advisory | MOB | Choctaw | 3 hr |
| Apr 7, 1:14 AM CDT | Special Weather Statement | MOB | Clarke | 46 min |
| Apr 7, 2:44 AM CDT | Special Weather Statement | MOB | Butler, Crenshaw | 61 min |
| Apr 7, 3:24 AM CDT | Special Weather Statement | MOB | Mobile | 51 min |
| Apr 7, 3:41 AM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 19 min |
| Apr 7, 3:45 AM CDT | Special Marine Warning | MOB | 45 min | |
| Apr 7, 3:59 AM CDT | Small Craft Advisory | MOB | 30 hr | |
| Apr 7, 5:27 AM CDT | Special Marine Warning | MOB | 63 min | |
| Apr 7, 6:34 AM CDT | Special Marine Warning | MOB | 41 min | |
| Apr 7, 6:55 AM CDT | Special Marine Warning | MOB | 65 min | |
| Apr 7, 7:54 AM CDT | Special Marine Warning | MOB | 66 min | |
| Apr 7, 8:45 AM CDT | Special Marine Warning | MOB | 2 hr | |
| Apr 7, 8:51 AM CDT | Special Marine Warning | MOB | 84 min | |
| Apr 7, 9:54 AM CDT | Special Marine Warning | MOB | 96 min | |
| Apr 7, 12:43 AM CDT | Special Weather Statement | MOB | Wayne | 47 min |
| Apr 7, 2:06 AM CDT | Special Weather Statement | MOB | Greene | 39 min |
| Apr 7, 2:39 AM CDT | Special Weather Statement | MOB | George, Stone | 66 min |
| Apr 7, 9:07 AM CDT | River Flood Warning | MOB | George, Greene, Wayne | 5 days |
Nearby
Flash Flood Warnings in Alabama, 2018Flash Flood Warnings in Mississippi, 2018Every flash flood warning in 2018
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; radar from the NEXRAD Level II archive.