Alert archive / Alabama / Flash Flood Warnings in 2012

Flash Flood Warning 6, NWS Huntsville, AL

January 17, 2012Madison County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jan 17, 2012, 3:01 PM CST for Madison County, Alabama. It was in force for 5 hr. 8 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: Jan 17, 2012, 3:01 PM CST (21:01 UTC)
Expired: Jan 17, 2012, 8:00 PM CST
In force: 5 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

County Madison County, AL

The radar

The Northeast Alabama radar (KHTX), 27 km from the middle of the area, began a volume at 21:04 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
Jan 17, 3:25 PM CST	FLASH FLOOD	4 W Hazel Green, AL	OVER SIX INCHES OF WATER WAS REPORTED FLOWING OVER THE ROAD AT THE INTERSECTION OF READY SECTION AND EGG AND BUTTER ROAD.
Jan 17, 3:26 PM CST	FLASH FLOOD	4 Nne Harvest, AL	AROUND 6 INCHES OF FAST FLOWING WATER REPORTED OVER THE ROAD AT THE INTERSECTION OF TONEY AND JEFF ROAD.
Jan 17, 3:30 PM CST	HEAVY RAIN 0	3 N Harvest, AL	FOUR INCHES OF WATER COVERING THE ROAD AT THE INTERSECTION OF HIGHWAY 53 AND WALL TRIANA.
Jan 17, 4:01 PM CST	HEAVY RAIN 0	4 S Harvest, AL	ONE TO THREE INCHES OF FAST FLOWING WATER REPORTED MOVING ACROSS A BACK YARD ON PINE GROVE ROAD.
Jan 17, 4:03 PM CST	FLASH FLOOD	3 Nnw Harvest, AL	WATER REPORTED ENTERING A HOME ON TONEY SCHOOL ROAD. EXACT LOCATION WAS ESTIMATED.
Jan 17, 4:17 PM CST	HEAVY RAIN 0	4 Sse Harvest, AL	THREE TO FOUR INCHES OF WATER WAS REPORTED OVER THE ROAD IN SEVERAL LOCATIONS ALONG NICK DAVIS ROAD BETWEEN PETTIS AND JEFF ROADS.
Jan 17, 4:20 PM CST	FLASH FLOOD	4 N Harvest, AL	MANY ROADS ACROSS NORTHWESTERN MADISON COUNTY ARE FLOODED. THESE ROADS INCLUDE READY SECTION ROAD...CARTERS GROVE...KNOWLEDGE DRIVE...WALL TRIANA...SHADY GROVE...BOLDEN HUGHEY...TONEY SCHOOL...DOE CREEK LANE...AND MCKEE.
Jan 17, 4:53 PM CST	FLASH FLOOD	5 Nne Meridianville, AL	WALKER LANE NEAR NARROW LANE WAS REPORTED FLOODED.

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, 9.0 hours before the alert went out and 136 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 587 m²/s²
0-3 km storm-relative helicity: 687 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

833 
WGUS54 KHUN 172101
FFWHUN
ALC089-180000-
/O.NEW.KHUN.FF.W.0006.120117T2101Z-120118T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
301 PM CST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN MADISON COUNTY IN NORTH CENTRAL ALABAMA...

* UNTIL 600 PM CST

* AT 259 PM CST...EMERGENCY MANAGEMENT REPORTED WATER ACROSS THE     
  ROADWAY AT THE INTERSECTION OF WALL TRIANA AND READY SECTION ROADS 
  NORTH OF HARVEST. DOPPLER RADAR INDICATES BANDS OF THUNDERSTORMS   
  WITH HEAVY RAINFALL TRACKING REPEATEDLY ACROSS NORTHERN MADISON    
  COUNTY...AND EXTENDING WEST TOWARDS THE MISSISSIPPI STATE LINE.    
  DOPPLER RADAR INDICATES 1 TO 2 INCHES OF RAIN HAS FALLEN FROM      
  TONEY TO HAZEL GREEN TO PLEVNA...AND AN ADDITIONAL 1 TO 2 INCHES   
  OF RAIN IS POSSIBLE THROUGH 6 PM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...     
  MERIDIANVILLE...MOORES MILL...HARVEST...HAZEL GREEN AND NEW        
  MARKET. ALSO INCLUDED IN THE WARNING ARE ALABAMA HIGHWAY 53 AND    
  HIGHWAY 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

BCC

5 follow-up statements

114 
WGUS74 KHUN 172141
FFSHUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
341 PM CST TUE JAN 17 2012

ALC089-180000-
/O.CON.KHUN.FF.W.0006.000000T0000Z-120118T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON AL-
341 PM CST TUE JAN 17 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN MADISON COUNTY
UNTIL 600 PM CST...

AT 341 PM CST...DOPPLER RADAR INDICATED VERY HEAVY RAINFALL 
CONTINUING ACROSS NORTHERN MADISON COUNTY. RAINFALL AMOUNTS HAVE 
BEEN ESTIMATED TO BE RANGING FROM TWO TO TWO AND A HALF INCHES 
ACROSS NORTHERN AND NORTHEAST MADISON COUNTY. 

RUNOFF FROM THE EXCESSIVE RAINFALL WILL CONTINUE TO CAUSE FLASH 
FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH 
FLOODING INCLUDE...MERIDIANVILLE...MOORES MILL...HARVEST...HAZEL 
GREEN AND NEW MARKET.

IN NORTHERN MADISON COUNTY...AT 325 PM...FLASH FLOODING WAS REPORTED 
WITH SEVERAL INCHES OF WATER OVER THE ROAD AT THE INTERSECTION OF 
BUTTER AND EGG ROAD AND READY SECTION ROAD. MADISON COUNTY EMERGENCY 
MANAGEMENT ALSO REPORTED FLOODING IN NEW MARKET AT NEW MARKET AND 
BUTLER ROAD AT 330 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY.

&&

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

TT

632 
WGUS74 KHUN 172222
FFSHUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
422 PM CST TUE JAN 17 2012

ALC089-180000-
/O.CON.KHUN.FF.W.0006.000000T0000Z-120118T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON AL-
422 PM CST TUE JAN 17 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN MADISON COUNTY
UNTIL 600 PM CST...

AT 405 PM CST...EMERGENCY MANAGEMENT REPORTED WATER OVER THE ROAD IN 
MULTIPLE LOCATIONS...MAINLY IN THE TONEY AREA OF NORTHWEST MADISON 
COUNTY. WATER WAS REPORTED TO BE ENTERING A HOME IN THE TONEY AREA 
AS WELL...AND EARLIER REPORTS INDICATED THAT FLASH FLOODING WAS ALSO 
OCCURRING IN THE NEW MARKET AREA. THE HEAVIEST RAINFALL IS PUSHING 
INTO CENTRAL AND SOUTHERN MADISON COUNTY...BUT AN ADDITIONAL QUARTER 
INCH TO HALF INCH OF RAINFALL IS POSSIBLE.

RUNOFF FROM THE EARLIER EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING 
TO WORSEN DESPITE THE LIGHTER RAINFALL. SOME LOCATIONS THAT WILL 
EXPERIENCE FLASH FLOODING INCLUDE...TONEY...HARVEST... 
MERIDIANVILLE...MOORES MILL...HAZEL GREEN AND NEW MARKET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. REMEMBER...TURN AROUND...DONT DROWN!

&&

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

BCC

418 
WGUS74 KHUN 172323
FFSHUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
523 PM CST TUE JAN 17 2012

ALC089-180000-
/O.CON.KHUN.FF.W.0006.000000T0000Z-120118T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON AL-
523 PM CST TUE JAN 17 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN MADISON COUNTY
UNTIL 600 PM CST...

AT 523 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
FLASH FLOODING WAS CONTINUING ACROSS ESPECIALLY ACROSS NORTHERN 
MADISON COUNTY. RAINFALL AMOUNTS RANGING FROM TWO TO TWO AND A HALF 
INCHES HAVE FALLEN...WITH SEVERAL INCHES OF WATER CONTINUING TO BE 
REPORTED OVER NUMEROUS ROADS IN MADISON COUNTY...ACCORDING TO 
MADISON COUNTY EMERGENCY MANAGEMENT.  

SOME LOCATIONS THAT WILL CONTINUE EXPERIENCE FLASH FLOODING 
INCLUDE...MERIDIANVILLE...MOORES MILL...HARVEST...HAZEL GREEN AND 
NEW MARKET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

TT

771 
WGUS54 KHUN 172342
FFWHUN
ALC089-180200-
/O.EXT.KHUN.FF.W.0006.000000T0000Z-120118T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
542 PM CST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHERN MADISON COUNTY IN NORTH CENTRAL ALABAMA...

* UNTIL 800 PM CST

* AT 530 PM CST...EMERGENCY MANAGEMENT REPORTED FLASH FLOODING ACROSS
  MUCH OF NORTHERN MADISON COUNTY. THE WORST FLOODING IS OCCURRING   
  NEAR TONEY IN NORTHWEST MADISON COUNTY...WHERE WATER IS COVERING   
  MULTIPLE ROADS...AND WATER HAS ENTERED A HOME. FLOODING WAS ALSO   
  REPORTED IN THE HAZEL GREEN AND NEW MARKET AREAS EARLIER THIS      
  AFTERNOON. WHILE THE HEAVIEST RAIN HAS SUBSIDED...RUNOFF FROM THE  
  EARLIER HEAVY RAINFALL WILL CONTINUE TO CREATE FLASH FLOODING      
  HAZARDS THROUGH 8 PM.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MERIDIANVILLE...MOORES MILL...HARVEST...HAZEL GREEN AND NEW MARKET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. REMEMBER...TURN AROUND...DONT DROWN!

&&

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

BCC

833 
WGUS74 KHUN 180158
FFSHUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
758 PM CST TUE JAN 17 2012

ALC089-180213-
/O.EXP.KHUN.FF.W.0006.000000T0000Z-120118T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON AL-
758 PM CST TUE JAN 17 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN MADISON
COUNTY WILL BE ALLOWED TO EXPIRE AT 800 PM CST...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3498 8631 3494 8626 3492 8627 3494 8629
      3493 8633 3491 8631 3490 8634 3487 8635
      3483 8633 3475 8679 3499 8678 3499 8631

$$

TT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 12:28 PM CST	Special Weather Statement	HUN	Lawrence	62 min
Jan 17, 12:32 PM CST	Special Weather Statement	HUN	Colbert	58 min
Jan 17, 12:47 PM CST	Special Weather Statement	HUN	Colbert, Lauderdale	58 min
Jan 17, 1:22 PM CST	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	38 min
Jan 17, 1:53 PM CST	Special Weather Statement	HUN	Lauderdale	52 min
Jan 17, 2:07 PM CST	Flash Flood Warning	HUN	Colbert, Lauderdale	5 hr
Jan 17, 2:26 PM CST	Flash Flood Warning	HUN	Limestone	5 hr
Jan 17, 4:03 PM CST	Special Weather Statement	HUN	Morgan	42 min

Nearby

Flash Flood Warnings in Alabama, 2012 Every 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.