Alert archive / Alabama / Areal Flood Warnings in 2021
Areal Flood Warning 48, NWS Huntsville, AL
NWS Huntsville, AL issued this areal flood warning at Sep 19, 2021, 3:52 PM CDT for 5 counties in Alabama; Franklin County, Lincoln County, Tennessee. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 19, 2021, 3:52 PM CDT (20:52 UTC)
- Expired
- Sep 19, 2021, 9:45 PM CDT
- In force
- 6 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jackson County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN
The radar
The Northeast Alabama radar (KHTX), 40 km from the middle of the area, began a volume at 20:53 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.9 hours before the alert went out and 241 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
- 896 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 611 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Huntsville, AL wrote its last area forecast discussion before this areal flood warning went out at Sep 19, 3:49 PM CDT, 3 minutes earlier.
Area forecast discussion, Sep 19, 3:49 PM CDT, 3 minutes before
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</html>Hazardous weather outlook, Sep 19, 4:08 AM CDT, 11 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Huntsville AL 408 AM CDT Sun Sep 19 2021 ALZ001>010-016-TNZ076-096-097-200015- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 408 AM CDT Sun Sep 19 2021 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Today and Tonight... A significant threat for flash flooding is expected to develop across the Tennessee Valley today as widespread showers and thunderstorms will produce multiple rounds of heavy rainfall across the region. A Flash Flood Watch is in effect until 7 PM Monday. .DAYS TWO THROUGH SEVEN...Monday through Saturday... Periods of heavy showers and storms are expected to develop across the region Monday and Tuesday and a threat for flash flooding will persist into early this week. Additionally, rises on rivers, creeks, and streams are expected and minor flooding will be possible. This activity will become more scattered in nature on Wednesday and taper off by Wednesday evening as a cold front sweeps through the area. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is not anticipated at this time.
In the hours before
Local storm report, Sep 19, 12:55 PM CDT, 2 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1255 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1255 PM FLOOD 3 SE TRINITY 34.57N 87.05W
09/19/2021 MORGAN AL LAW ENFORCEMENT
FLOODING ACROSS THE ROADWAY AT SHADY GROVE
LANE AND BUNNY LANE. PICTURES ON SOCIAL
MEDIA.
&&
GHLocal storm report, Sep 19, 12:59 PM CDT, 2 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1259 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1258 PM FLOOD 2 E HUNTSVILLE 34.71N 86.59W
09/19/2021 MADISON AL LAW ENFORCEMENT
WATER OVER ROAD AT BOB WALLACE/PARKWAY.
&&
GHLocal storm report, Sep 19, 1:00 PM CDT, 2 hours 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
100 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1259 PM FLOOD 3 SE MADISON 34.67N 86.72W
09/19/2021 MADISON AL LAW ENFORCEMENT
WATER OVER THE ROAD AT ZIERDT AND EDGEWATER.
&&
GHLocal storm report, Sep 19, 1:04 PM CDT, 2 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
104 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0103 PM FLOOD 3 E HUNTSVILLE 34.71N 86.57W
09/19/2021 MADISON AL BROADCAST MEDIA
VIDEO SHOWS RIGHT LANE FLOODED ALONG
WHITESBURG BETWEEN DRAKE AND CALIFORNIA.
&&
GHLocal storm report, Sep 19, 1:26 PM CDT, 2 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
126 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0125 PM FLOOD 3 ESE TRINITY 34.58N 87.04W
09/19/2021 MORGAN AL BROADCAST MEDIA
FLOODING IN THE SHERWOOD OAKS NEIGHBORHOOD
FROM SOCIAL MEDIA.
&&
GHLocal storm report, Sep 19, 2:08 PM CDT, 1 hour 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
208 PM CDT SUN SEP 19 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0115 PM FLOOD 1 W GURLEY 34.70N 86.40W
09/19/2021 MADISON AL BROADCAST MEDIA
VIDEO OF ROADS FLOODED ON SOCIAL MEDIA AT
THE INTERSECTION OF ROCK CUT ROAD AND US 72.
&&
GHThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 4:21 AM CDT | Flash Flood Warning | HUN | Jackson | 3 hr |
| Sep 19, 7:25 AM CDT | Flash Flood Warning | HUN | Madison, Marshall | 3 hr |
| Sep 19, 7:29 AM CDT | Areal Flood Warning | HUN | Jackson | 9 hr |
| Sep 19, 8:23 AM CDT | River Flood Warning | HUN | Jackson, Madison, Marshall | 4 days |
| Sep 19, 8:27 AM CDT | River Flood Warning | HUN | Madison | 41 hr |
| Sep 19, 10:18 AM CDT | Areal Flood Warning | HUN | Madison, Marshall | 6 hr |
| Sep 19, 10:59 AM CDT | Areal Flood Warning | HUN | Madison, Morgan | 5 hr |
| Sep 19, 12:49 PM CDT | Areal Flood Warning | HUN | Limestone, Morgan | 3 hr |
| Sep 19, 1:13 PM CDT | Flash Flood Warning | HUN | Madison, Marshall, Morgan | 3 hr |
| Sep 19, 3:48 PM CDT | River Flood Warning | HUN | Franklin, Lincoln | 35 hr |
Nearby
Areal Flood Warnings in Alabama, 2021Areal Flood Warnings in Tennessee, 2021Every areal 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; radar from the NEXRAD Level II archive.