Alert archive / Alabama / Flash Flood Warnings in 2012
Flash Flood Warning 36, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Sep 2, 2012, 5:33 PM CDT for Madison 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
- Sep 2, 2012, 5:33 PM CDT (22:33 UTC)
- Expired
- Sep 2, 2012, 8:19 PM CDT
- In force
- 3 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Madison County, AL
The radar
The Northeast Alabama radar (KHTX), 59 km from the middle of the area, began a volume at 22:36 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 2, 7:20 PM CDT | FLASH FLOOD | 1 E Harvest, AL | A PORTION OF NORTH DAY HILL ROAD WAS CLOSED. |
| Sep 2, 7:20 PM CDT | FLASH FLOOD | Harvest, AL | A PORTION OF FORD CHAPEL HILL ROAD WAS CLOSED DUE TO FLASH FLOODING. |
| Sep 2, 7:20 PM CDT | FLASH FLOOD | Se Harvest, AL | A PORTION OF FORD CHAPEL HILL ROAD WAS CLOSED DUE TO FLASH FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 10.6 hours before the alert went out and 144 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
- 257 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
014 WGUS54 KHUN 022233 FFWHUN ALC089-030130- /O.NEW.KHUN.FF.W.0036.120902T2233Z-120903T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 533 PM CDT SUN SEP 2 2012 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN MADISON COUNTY IN NORTH CENTRAL ALABAMA... * UNTIL 830 PM CDT * AT 522 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS NORTHWEST MADISON COUNTY...ESPECIALLY IN THE HARVEST AREA. A NATIONAL WEATHER SERVICE EMPLOYEE REPORTED VERY HEAVY RAIN IN THE HARVEST AREA WITH OVER 3 INCHES OF WATER OVER PORTIONS OF NICK DAVIS ROAD. RADAR WAS SHOWING THAT THREE INCHES OF WATER HAS ALREADY FALLEN ACROSS NORTHWEST MADISON. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY IN THE HARVEST AREA. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... HARVEST. LAT...LON 3481 8667 3481 8678 3489 8678 3489 8668 $$ SS
2 follow-up statements
299 WGUS74 KHUN 030021 FFSHUN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 721 PM CDT SUN SEP 2 2012 ALC089-030130- /O.CON.KHUN.FF.W.0036.000000T0000Z-120903T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MADISON AL- 721 PM CDT SUN SEP 2 2012 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR NORTHWESTERN MADISON COUNTY... AT 717 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. 3 TO 4 INCHES OF RAIN HAVE ALREADY FALLEN AROUND THE HARVEST AREA. LAW ENFORCEMENT REPORTED THE FOLLOWING ROADS CLOSED IN HARVEST...NORTH DAY HILL AND FORD CHAPEL ROADS. ANOTHER LINE OF STORMS WILL MOVE OVER NORTHWEST MADISON COUNTY...INCLUDING HARVEST...WITH ANOTHER 1 TO 2 INCHES OF RAIN POSSIBLE. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... HARVEST. LAT...LON 3481 8667 3481 8678 3489 8678 3489 8668 $$ SS
063 WGUS74 KHUN 030119 FFSHUN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 819 PM CDT SUN SEP 2 2012 ALC089-030128- /O.CAN.KHUN.FF.W.0036.000000T0000Z-120903T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MADISON AL- 819 PM CDT SUN SEP 2 2012 ...THE FLASH FLOOD WARNING FOR NORTHWESTERN MADISON COUNTY IS CANCELLED... FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES. LAT...LON 3481 8667 3481 8678 3489 8678 3489 8668 $$ SS
The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 12:34 PM CDT | Special Weather Statement | HUN | Jackson | 26 min |
| Sep 2, 2:54 PM CDT | Special Weather Statement | HUN | Limestone | 36 min |
| Sep 2, 3:56 PM CDT | Special Weather Statement | HUN | Colbert | 34 min |
| Sep 2, 4:05 PM CDT | Tornado Warning | HUN | Colbert, Lawrence | 25 min |
| Sep 2, 4:09 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison | 36 min |
| Sep 2, 4:14 PM CDT | Tornado Warning | HUN | Limestone, Madison | 31 min |
| Sep 2, 4:27 PM CDT | Tornado Warning | HUN | Lawrence, Limestone, Morgan | 33 min |
| Sep 2, 4:40 PM CDT | Tornado Warning | HUN | Jackson, Madison | 35 min |
| Sep 2, 4:45 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 30 min |
| Sep 2, 5:04 PM CDT | Tornado Warning | HUN | Jackson | 26 min |
| Sep 2, 5:05 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison | 25 min |
| Sep 2, 5:14 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Morgan | 31 min |
| Sep 2, 5:18 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lawrence | 27 min |
| Sep 2, 5:24 PM CDT | Tornado Warning | HUN | Limestone, Madison | 36 min |
| Sep 2, 5:32 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 28 min |
| Sep 2, 5:40 PM CDT | Tornado Warning | HUN | Jackson, Madison | 35 min |
| Sep 2, 5:44 PM CDT | Flash Flood Warning | HUN | Madison | 3 hr |
| Sep 2, 5:45 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lawrence | 30 min |
| Sep 2, 5:50 PM CDT | Tornado Warning | HUN | Franklin, Lawrence | 25 min |
| Sep 2, 5:55 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 20 min |
| Sep 2, 5:58 PM CDT | Special Weather Statement | HUN | Marshall | 47 min |
| Sep 2, 6:02 PM CDT | Tornado Warning | HUN | Jackson | 28 min |
| Sep 2, 6:07 PM CDT | Flash Flood Warning | HUN | Franklin, Lawrence | 3 hr |
| Sep 2, 6:09 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 36 min |
| Sep 2, 6:30 PM CDT | Special Weather Statement | HUN | Lauderdale | 45 min |
| Sep 2, 6:37 PM CDT | Special Weather Statement | HUN | DeKalb | 53 min |
| Sep 2, 6:45 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 15 min |
| Sep 2, 6:52 PM CDT | Special Weather Statement | HUN | Marshall | 53 min |
| Sep 2, 6:56 PM CDT | Severe Thunderstorm Warning | HUN | Cullman, Marshall, Morgan | 34 min |
Nearby
Flash Flood Warnings in Alabama, 2012Every flash flood warning in 2012
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.