Alert archive / Tennessee / Flash Flood Warnings in 2008

Flash Flood Warning 31, NWS Huntsville, AL

December 9, 2008Franklin County, Lincoln County, Moore County, Tennessee

NWS Huntsville, AL issued this flash flood warning at Dec 9, 2008, 11:30 PM CST for Franklin County, Lincoln County, Moore 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
Dec 9, 2008, 11:30 PM CST (05:30 UTC)
Expired
Dec 10, 2008, 5:30 AM CST
In force
6 hr
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties Franklin County, TN, Lincoln County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 05:30 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, 5.5 hours before the alert went out and 107 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 2008-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2008-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -131 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
530 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-131 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at Dec 9, 9:38 PM CST, 1 hour 52 minutes earlier.

Area forecast discussion, Dec 9, 9:38 PM CST, 1 hour 52 minutes before
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Hazardous weather outlook, Dec 9, 8:51 PM CST, 2 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
851 PM CST TUE DEC 9 2008

ALZ001>010-016-TNZ076-096-097-101100-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DE KALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
851 PM CST TUE DEC 9 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS
OF SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...TONIGHT...

SOUTHERLY WINDS OF 15 TO 25 MPH WILL OCCUR AHEAD OF AN
APPROACHING STORM SYSTEM...WITH GUSTS AS HIGH AS 40 MPH IN THE
HIGHER ELEVATIONS. IN ADDITION...SHOWERS AND THUNDERSTORMS WILL
OVERSPREAD THE AREA THIS EVENING. SOME STORMS MAY BE STRONG...
CAPABLE OF PRODUCING HEAVY RAIN AND BRIEF WIND GUSTS TO 50 MPH.

WIDESPREAD RAINFALL OF 1 TO 3 INCHES CAN BE EXPECTED THROUGH
DAYBREAK...WITH LOCALLY HIGHER AMOUNTS UNDER TRAINING THUNDERSTORMS.
PONDING OF WATER ON ROADS AND MINOR FLOODING OF LOW-LYING AREAS WILL
BE POSSIBLE WITH ANY PERSISTENT HEAVY RAIN. FOR MORE
INFORMATION...PLEASE SEE THE FLASH FLOOD WATCH /HUNFFAHUN/.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

AS THE COLD FRONT PUSHES EASTWARD...THUNDERSTORMS WILL EXIT EASTERN
PORTIONS OF THE CENTRAL TENNESSEE VALLEY EARLY WEDNESDAY. COLDER
AND DRIER AIR WILL FILTER INTO THE REGION ON WEDNESDAY.

ANOTHER STORM SYSTEM DIGGING INTO THE GULF COASTAL REGION...IS
FORECAST TO TRACK FROM THE NORTHERN GULF OF MEXICO AND THROUGH
THE SOUTHEAST STATES WEDNESDAY NIGHT THROUGH THURSDAY. THIS WILL
BRING ANOTHER BATCH OF MODERATE TO HEAVY RAINFALL...WITH THE
POTENTIAL FOR A MIX OF RAIN AND SNOW THURSDAY.

UNCERTAINTY REMAINS QUITE HIGH WITH REGARDS TO STRENGTH AND TIMING
OF THIS PARTICULAR STORM. RESIDENTS ARE URGED TO MONITOR FUTURE
UPDATED FORECASTS AS THIS SYSTEM DEVELOPS.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL
IS POSSIBLE TONIGHT. SPOTTERS ARE ENCOURAGED TO REPORT ANY STORM
DAMAGE OR RAINFALL AMOUNTS TO THE NATIONAL WEATHER SERVICE IN
HUNTSVILLE.

AMP/DJN/JLL

In the hours before

Local storm report, Dec 9, 9:51 PM CST, 1 hour 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
951 PM CST TUE DEC 09 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0920 PM     TSTM WND DMG     RED BAY                 34.44N 88.14W
12/09/2008                   FRANKLIN           AL   LAW ENFORCEMENT

            REPORT OF POWER OUTAGES IN RED BAY FROM DOWNED UTILITY
            POLES.

&&

AMP
Local storm report, Dec 9, 9:57 PM CST, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
957 PM CST TUE DEC 09 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0925 PM     TSTM WND DMG     HATTON                  34.56N 87.41W
12/09/2008                   LAWRENCE           AL   LAW ENFORCEMENT

            A TREE WAS KNOCKED DOWN ACROSS HWY 101 IN THE HATTON AREA
            NEAR MILEMAKER 2.

&&

AMP
Local storm report, Dec 9, 10:00 PM CST, 1 hour 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1000 PM CST TUE DEC 09 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 PM     FLASH FLOOD      CHEROKEE                34.76N 87.97W
12/09/2008                   COLBERT            AL   TRAINED SPOTTER

            REPORT OF DITCHES AND CREEKS FLOODING NEAR CHEROKEE.

&&

AMP
Local storm report, Dec 9, 11:05 PM CST, 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1105 PM CST TUE DEC 09 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1055 PM     FLASH FLOOD      TOWN CREEK              34.68N 87.41W
12/09/2008                   LAWRENCE           AL   LAW ENFORCEMENT

            LAWRENCE COUNTY 911 REPORTS WATER OVER PORTIONS OF AL
            HIGHWAY 101

1055 PM     FLASH FLOOD      3 N CHALYBEATE SPRINGS  34.61N 87.22W
12/09/2008                   LAWRENCE           AL   LAW ENFORCEMENT

            LAWRENCE COUNTY 911 REPORTS WATER OVER CR 222.

&&

DL
Special weather statement, Dec 9, 11:24 PM CST, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1124 PM CST TUE DEC 9 2008

ALZ005-100615-
LIMESTONE-
1124 PM CST TUE DEC 9 2008

...SIGNIFICANT WEATHER ALERT FOR LIMESTONE COUNTY UNTIL 1215 AM
CST...

AT 1120 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS NEAR TANNER...OR 6 MILES SOUTHWEST OF
ATHENS...MOVING NORTHEAST AT 55 MPH.

WINDS UP TO 50 MPH AND HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  ELKMONT...LEGGTOWN.
  HOLLAND GIN...BETHEL.
  ARDMORE.

RAINFALL AMOUNTS OF 1.00 ARE POSSIBLE FROM THESE THUNDERSTORMS
WITHIN AN HOUR. THIS MAY RESULT IN BRIEF RUNOFF PROBLEMS AND PONDING OF
WATER ON AREA ROADWAYS.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL
TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS
CONCERNING THIS WEATHER SITUATION.

SS

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 9, 8:44 PM CSTFlash Flood WatchHUNColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more12 hr
Dec 9, 9:23 PM CSTSevere Thunderstorm WarningHUNFranklin37 min
Dec 9, 9:29 PM CSTFlash Flood WarningHUNColbert, Franklin, Lauderdale6 hr
Dec 9, 9:43 PM CSTSevere Thunderstorm WarningHUNColbert, Franklin47 min
Dec 9, 10:31 PM CSTSevere Thunderstorm WarningHUNColbert, Lawrence44 min
Dec 9, 10:34 PM CSTFlash Flood WarningHUNColbert, Cullman, Jackson, Lauderdale, Lawrence, Limestone and 3 more9 hr
Dec 10, 12:08 AM CSTSevere Thunderstorm WarningHUNCullman52 min
Dec 10, 12:22 AM CSTTornado WarningHUNCullman23 min
Dec 10, 12:43 AM CSTTornado WarningHUNCullman32 min
Dec 10, 1:06 AM CSTTornado WarningHUNJackson24 min
Dec 10, 1:12 AM CSTSevere Thunderstorm WarningHUNJackson, Marshall33 min
Dec 10, 1:14 AM CSTTornado WarningHUNCullman31 min
Dec 10, 1:25 AM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson20 min
Dec 10, 1:44 AM CSTFlash Flood WarningHUNDeKalb, Jackson, Marshall3 hr
Dec 10, 2:07 AM CSTSevere Thunderstorm WarningHUNDeKalb, Marshall23 min
Dec 10, 2:40 AM CSTSevere Thunderstorm WarningHUNCullman20 min
Dec 10, 3:18 AM CSTAreal Flood WarningHUNColbert, Franklin, Lauderdale6 hr
Dec 10, 5:20 AM CSTRiver Flood WarningHUNMadison58 hr
Dec 10, 5:29 AM CSTRiver Flood WarningHUNLawrence3 days
Dec 10, 2:08 PM CSTRiver Flood WarningHUNMadison16 hr
Dec 10, 4:05 PM CSTFlood WatchHUNColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more23 hr
Dec 10, 4:07 PM CSTWind AdvisoryHUNColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more10 hr
Dec 10, 5:15 AM CSTRiver Flood WarningHUNFranklin, Lincoln14 hr
Dec 10, 5:38 AM CSTAreal Flood WarningHUNFranklin, Lincoln, Moore3 hr

Nearby

Flash Flood Warnings in Tennessee, 2008Every flash flood warning in 2008

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.