Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 31, NWS Birmingham, AL

August 10, 2017Chambers County, Clay County, Randolph County, Alabama

NWS Birmingham, AL issued this flash flood warning at Aug 10, 2017, 7:58 PM CDT for Chambers County, Clay County, Randolph County, Alabama. It was in force for 5 hr. 13 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: Aug 10, 2017, 7:58 PM CDT (00:58 UTC)
Expired: Aug 11, 2017, 1:00 AM CDT
In force: 5 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

Counties Chambers County, AL, Clay County, AL, Randolph County, AL

The radar

The Maxwell AFB radar (KMXX), 80 km from the middle of the area, began a volume at 01:02 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
Aug 10, 8:05 PM CDT	FLASH FLOOD	1 E Roanoke, AL	HWY 22 FLOODED AT THE INTERSECTION OF CR 87.
Aug 10, 8:15 PM CDT	FLASH FLOOD	1 Nnw Rock Mills, AL	HWY 22 FLOODED AT THE CREEK BRIDGE IN ROCK MILLS.
Aug 10, 8:15 PM CDT	FLASH FLOOD	1 Sw Malone, AL	FLOODING ALONG PORTION OF CR 15.
Aug 10, 8:15 PM CDT	FLASH FLOOD	2 Ssw Malone, AL	FLOODING ALONG PORTION OF CR 15.
Aug 10, 8:20 PM CDT	FLASH FLOOD	Lineville, AL	PORTIONS OF HWY 49 AND TALLADEGA ST IMPASSABLE DUE TO FLOODING. TIME ESTIMATED.
Aug 10, 8:30 PM CDT	FLASH FLOOD	Ashland, AL	PORTIONS OF HWY 77 AND TYSON RD IMPASSABLE DUE TO FLOODING. TIME ESTIMATED.
Aug 10, 8:30 PM CDT	FLASH FLOOD	Roanoke, AL	WATER RESCUE ON W POINT ST. WATER UP TO CAR WINDOWS. TIME ESTIMATED.
Aug 10, 8:45 PM CDT	FLASH FLOOD	3 E Roanoke, AL	ROCK MILLS VFD REPORTS WATER IN CREEK UP TO RD LEVEL IN FRONT OF MIDWAY CHURCH ON HWY 22.
Aug 10, 8:45 PM CDT	FLASH FLOOD	3 W Rock Mills, AL	ROCK MILLS VFD REPORTS WATER IN CREEK UP TO RD LEVEL IN FRONT OF MIDWAY CHURCH ON HWY 22.
Aug 10, 8:45 PM CDT	FLASH FLOOD	Roanoke, AL	SEVERAL ROADWAYS WITHIN ROANOKE CITY LIMITS IMPASSABLE DUE TO FLOODING.
Aug 10, 9:00 PM CDT	FLASH FLOOD	2 N Mellow Valley, AL	WATER OVER CR 49 AND INTO VICTORY CHURCH PARKING LOT, AND WATER ALSO COVERING SARDIS RD IN THE 1700 BLOCK. CANADY RD REPORTED WASHED OUT AT WESOBULGA CREEK. TIME ESTIMATED.
Aug 10, 9:00 PM CDT	FLASH FLOOD	3 Ese Clay County Count, AL	WATER FLOWING ACROSS CRAGFORD RD AT THE SHILOH VFD. TIME ESTIMATED.
Aug 10, 10:10 PM CDT	FLASH FLOOD	Roanoke, AL	MAJOR FLOODING STILL ONGOING IN ROANOKE. FD REPORTS 5 WATER RESCUES WERE PERFORMED, 6 MAJOR ROADWAYS ARE STILL FLOODED WITH 2 BRIDGES WASHED OUT.

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 00:00Z, 1.0 hours before the alert went out and 93 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 897 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

041 
WGUS54 KBMX 110058
FFWBMX
ALC017-027-111-110400-
/O.NEW.KBMX.FF.W.0031.170811T0058Z-170811T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
758 PM CDT THU AUG 10 2017

The National Weather Service in Birmingham has issued a

* Flash Flood Warning for...
  Southern Randolph County in east central Alabama...
  Northern Chambers County in east central Alabama...
  Clay County in east central Alabama...

* Until 1100 PM CDT

* At 757 PM CDT, emergency management reported heavy rain across the
  warned area. Up to two inches of rain have already fallen. Flash
  flooding is already occurring.

* Some locations that will experience flooding include...
  Roanoke, Lineville, Ashland, Wedowee, Lake Wedowee, Stroud, Wadley,
  Red Level, Malone, Post Oak Forks, Barfield, Amity Park, Abanda,
  Standing Rock, Welch, Fredonia, Veasey Creek Park, Crystal Lake,
  Sparkling Springs and Dickert.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3307 8559 3311 8559 3311 8568 3327 8612
      3329 8612 3330 8598 3338 8598 3338 8594
      3340 8594 3340 8592 3345 8592 3347 8590
      3322 8525 3292 8520

$$

25/Owen

2 follow-up statements

941 
WGUS74 KBMX 110140
FFSBMX

Flash Flood Statement
National Weather Service Birmingham AL
840 PM CDT THU AUG 10 2017

ALC017-027-111-110400-
/O.CON.KBMX.FF.W.0031.000000T0000Z-170811T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Randolph AL-Chambers AL-Clay AL-
840 PM CDT THU AUG 10 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
SOUTHERN RANDOLPH...NORTHERN CHAMBERS AND CLAY COUNTIES...

At 837 PM CDT, emergency management reported flash flooding in 
Roanoke, Lineville, and Ashland. Several areas have received three 
to five inches of rain in a fairly short period of time. Flash 
flooding is already occurring and has become very dangerous. Refrain 
from travel in this area unless it is absolutely necessary.

Some locations that will experience flooding include...
Roanoke, Lineville, Ashland, Wedowee, Lake Wedowee, Stroud, Wadley,
Red Level, Malone, Post Oak Forks, Barfield, Amity Park, Abanda,
Standing Rock, Welch, Fredonia, Veasey Creek Park, Crystal Lake,
Sparkling Springs and Dickert.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3307 8559 3311 8559 3311 8568 3327 8612
      3329 8612 3330 8598 3338 8598 3338 8594
      3340 8594 3340 8592 3345 8592 3347 8590
      3322 8525 3292 8520

$$

75

360 
WGUS54 KBMX 110358
FFWBMX
ALC017-027-111-110600-
/O.EXT.KBMX.FF.W.0031.000000T0000Z-170811T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
1058 PM CDT THU AUG 10 2017

The National Weather Service in Birmingham has extended the

* Flash Flood Warning for...
  Southern Randolph County in east central Alabama...
  Northern Chambers County in east central Alabama...
  Clay County in east central Alabama...

* Until 100 AM CDT

* At 1054 PM CDT, local emergency management reported light to 
  moderate rain continuing across the warned area. Three to six 
  inches of rain have already fallen. Flash flooding is already 
  occurring. Some locations have receded while others have several 
  feet of water problems ongoing.

* Some locations that will experience flooding include...
  Roanoke, Lineville, Ashland, Wedowee, Lake Wedowee, Stroud, Wadley,
  Red Level, Malone, Post Oak Forks, Barfield, Amity Park, Abanda,
  Standing Rock, Welch, Fredonia, Veasey Creek Park, Crystal Lake,
  Sparkling Springs and Dickert.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3307 8559 3311 8559 3311 8568 3327 8612
      3329 8612 3330 8598 3338 8598 3338 8594
      3340 8594 3340 8592 3345 8592 3347 8590
      3322 8525 3292 8520

$$

75

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 7:16 PM CDT	Flash Flood Warning	BMX	Blount, St. Clair	89 min
Aug 10, 7:28 PM CDT	Areal Flood Advisory	BMX	Fayette, Tuscaloosa	3 hr
Aug 10, 7:31 PM CDT	Areal Flood Advisory	BMX	Chambers, Clay, Randolph, Tallapoosa	3 hr
Aug 10, 7:52 PM CDT	Areal Flood Advisory	BMX	Barbour, Russell	3 hr
Aug 10, 9:13 PM CDT	Areal Flood Advisory	BMX	Winston	2 hr
Aug 10, 9:38 PM CDT	Areal Flood Advisory	BMX	Blount, Jefferson, St. Clair, Shelby, Talladega	3 hr
Aug 10, 10:13 PM CDT	Areal Flood Advisory	BMX	Calhoun, Cherokee, Cleburne, Etowah, Randolph, St. Clair	2 hr
Aug 10, 10:22 PM CDT	Flash Flood Warning	BMX	Blount, Jefferson	4 hr
Aug 11, 3:10 AM CDT	Flash Flood Watch	BMX	Autauga, Barbour, Blount, Bullock, Calhoun, Chambers and 19 more	16 hr
Aug 11, 4:55 AM CDT	Dense Fog Advisory	BMX	Autauga, Barbour, Bibb, Bullock, Chambers, Chilton and 19 more	3 hr

Nearby

Flash Flood Warnings in Alabama, 2017 Every flash flood warning in 2017

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.