Alert archive / Alabama / Flash Flood Warnings in 2006

Flash Flood Warning 21, NWS Huntsville, AL

November 15, 2006Madison County, Alabama

NWS Huntsville, AL issued this flash flood warning at Nov 15, 2006, 7:30 PM CST for Madison County, Alabama. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Nov 15, 2006, 7:30 PM CST (01:30 UTC)
Expired
Nov 15, 2006, 9:30 PM CST
In force
2 hr
Issued by
NWS Huntsville, AL
Area
Counties, with a storm outline in the text

County Madison County, AL

The radar

The Northeast Alabama radar (KHTX), 45 km from the middle of the area, began a volume at 01:33 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

Nashville Metro, TN (KBNA), launched 00:00Z, 1.5 hours before the alert went out and 143 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2006-11-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 104 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2006-11-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 307 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
104 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
307 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KHUN 160135
FFWHUN
ALC089-160330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
730 PM CST WED NOV 15 2006

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

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

* UNTIL 930 PM CST

* AT 730 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN IN WESTERN MORGAN COUNTY AND SOUTHEASTERN LIMESTONE 
COUNTY THAT WILL MOVE NORTHEAST OVER MADISON COUNTY. AROUND 2 INCHES 
OF RAINFALL FELL EARLIER OVER MUCH OF CENTRAL MADISON COUNTY. 
ADDITIONAL EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING 
OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS... STREETS AND 
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

* SOME LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO...
  HARVEST...HAZEL GREEN...HUNTSVILLE...MADISON...MERIDIANVILLE...
  MOORES MILL...NEW MARKET AND REDSTONE ARSENAL.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE 
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS 
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3488 8677 3459 8677 3476 8636 3485 8636
      3499 8633 3499 8661

$$
KTW/WRS
1 follow-up statement
000 
WGUS74 KHUN 160322
FFSHUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
920 PM CST WED NOV 15 2006

ALC089-160330-
MADISON AL-
920 PM CST WED NOV 15 2006

...THE FLASH FLOOD WARNING FOR MADISON COUNTY HAS BEEN CANCELLED...

NATIONAL WEATHER SERVICE DOPPLER RADAR...INDICATED THAT HEAVY 
RAINFALL HAS ENDED ACROSS THE WARNED AREA. MADISON COUNTY OFFICIALS 
INDICATED THAT NO FLASH FLOODING WAS REPORTED. SOME MINOR FLOODING 
MAY CONTINUE...BUT THE THREAT OF FLOODING HAS ENDED. THUS...THE 
FLASH FLOOD WARNING HAS BEEN CANCELED.

LAT...LON 3488 8677 3459 8677 3476 8636 3485 8636
      3499 8633 3499 8661

$$
KTW

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 15, 9:50 PM CSTSevere Thunderstorm WarningHUNJackson25 min

Nearby

Flash Flood Warnings in Alabama, 2006Every flash flood warning in 2006

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.