Alert archive / Alabama / Areal Flood Advisories in 2021
Areal Flood Advisory 65, NWS Birmingham, AL
NWS Birmingham, AL issued this areal flood advisory at Jun 30, 2021, 9:34 PM CDT for Jefferson County, Shelby County, Alabama. It was in force for 116 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2021, 9:34 PM CDT (02:34 UTC)
- Expired
- Jun 30, 2021, 11:30 PM CDT
- In force
- 116 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Jefferson County, AL, Shelby County, AL
The radar
The Birmingham radar (KBMX), 26 km from the middle of the area, began a volume at 02:33 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
Birmingham, AL (KBMX), launched 00:00Z, 2.6 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
- 1016 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1300 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- -13 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Birmingham, AL wrote its last area forecast discussion before this areal flood advisory went out at Jun 30, 8:32 PM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, Jun 30, 8:32 PM CDT, 1 hour 2 minutes before
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</html>Hazardous weather outlook, Jun 30, 3:20 AM CDT, 18 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Birmingham AL 320 AM CDT Wed Jun 30 2021 ALZ011>015-017>050-011130- Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee- Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega- Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa- Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon- Bullock-Lee-Russell-Pike-Barbour- 320 AM CDT Wed Jun 30 2021 This Hazardous Weather Outlook is for the counties served by the National Weather Service office in Birmingham. .DAY ONE...Outlook through Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Activation of storm spotters and emergency management is not expected at this time.
In the hours before
Special weather statement, Jun 30, 6:18 PM CDT, 3 hours 16 minutes before
Special Weather Statement
National Weather Service Birmingham AL
618 PM CDT Wed Jun 30 2021
ALZ028-302345-
Clay AL-
618 PM CDT Wed Jun 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CLAY COUNTY UNTIL
645 PM CDT...
At 618 PM CDT, Doppler radar was tracking a strong thunderstorm over
Barfield, or near Lineville, moving southwest at 10 mph.
Pea size hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Lineville and Barfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Birmingham.
&&
LAT...LON 3346 8571 3338 8566 3329 8578 3335 8588
3344 8585
TIME...MOT...LOC 2318Z 062DEG 7KT 3340 8574
40/SizemoreSpecial weather statement, Jun 30, 6:23 PM CDT, 3 hours 11 minutes before
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</html>Special weather statement, Jun 30, 7:00 PM CDT, 2 hours 34 minutes before
Special Weather Statement
National Weather Service Birmingham AL
700 PM CDT Wed Jun 30 2021
ALZ035-036-010030-
Chilton AL-Coosa AL-
700 PM CDT Wed Jun 30 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHILTON AND WEST
CENTRAL COOSA COUNTIES UNTIL 730 PM CDT...
At 659 PM CDT, Doppler radar was tracking a strong thunderstorm over
Mitchell Lake, or 7 miles northeast of Clanton. This storm was nearly
stationary.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Clanton, Mitchell Lake, Gap Of The Mountain, Higgins Ferry Park, Lay
Lake Dam, Lay Lake, Lomax, Paint Creek, I 65 Rest Area and Cooper.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If on or near Lay Lake, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3299 8647 3282 8642 3276 8659 3285 8668
3301 8669
TIME...MOT...LOC 2359Z 081DEG 3KT 3290 8652
40/SizemoreLocal storm report, Jun 30, 7:42 PM CDT, 1 hour 52 minutes before
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</html>Local storm report, Jun 30, 7:43 PM CDT, 1 hour 51 minutes before
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</html>Local storm report, Jun 30, 7:47 PM CDT, 1 hour 47 minutes before
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</html>The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 7:00 PM CDT | Special Weather Statement | BMX | Chilton | 30 min |
Nearby
Areal Flood Advisories in Alabama, 2021Every areal flood advisory 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.