Alert archive / Alabama / Flash Flood Warnings in 2018
Flash Flood Warning 3, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at May 15, 2018, 6:15 PM CDT for Jefferson County, Alabama. It was in force for 3 hr. 3 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
- May 15, 2018, 6:15 PM CDT (23:15 UTC)
- Expired
- May 15, 2018, 9:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Jefferson County, AL
The radar
The Birmingham radar (KBMX), 36 km from the middle of the area, began a volume at 23:17 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 |
|---|---|---|---|
| May 15, 6:25 PM CDT | FLASH FLOOD | 1 E Dolomite, AL | WATER COVERING PORTIONS OF INTERSTATE 20 NEAR ALLISON BONNETT MEMORIAL DRIVE EXIT. |
| May 15, 6:30 PM CDT | FLASH FLOOD | Midfield, AL | STREET FLOODING ALONG WOODWARD RD AT BROOKWOOD RD E. TIME ESTIMATED. |
| May 15, 6:45 PM CDT | FLASH FLOOD | 1 Wsw Midfield, AL | ROAD IMPASSABLE NEAR INTERSECTION OF WOODWARD RD AND DOCTOR M.L.K. JR DR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 35 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
- 85 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 1464 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted.
485
WGUS54 KBMX 152315
FFWBMX
ALC073-160215-
/O.NEW.KBMX.FF.W.0003.180515T2315Z-180516T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
615 PM CDT TUE MAY 15 2018
The National Weather Service in Birmingham has issued a
* Flash Flood Warning for...
South central Jefferson County in central Alabama...
* Until 915 PM CDT.
* At 614 PM CDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Flash flooding is
expected.
* Some locations that will experience flooding include...
Southwestern Birmingham, Bessemer, Hueytown, Fairfield, Pleasant
Grove, Midfield, Brighton, Lipscomb, McDonald Chapel and Dolomite.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 3353 8692 3347 8684 3338 8689 3340 8698
3350 8698
$$
61The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 1:47 PM CDT | Special Weather Statement | BMX | Chilton | 43 min |
| May 15, 5:19 PM CDT | Special Weather Statement | BMX | Jefferson | 26 min |
| May 15, 5:34 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 26 min |
| May 15, 6:05 PM CDT | Special Weather Statement | BMX | Jefferson | 25 min |
| May 15, 6:58 PM CDT | Special Weather Statement | BMX | Blount | 32 min |
Nearby
Flash Flood Warnings in Alabama, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.