Alert archive / Alabama / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 121, NWS Huntsville, AL

December 25, 2015DeKalb County, Marshall County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Dec 25, 2015, 10:58 AM CST for DeKalb County, Marshall County, Alabama. It was in force for 32 min. 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 25, 2015, 10:58 AM CST (16:58 UTC)
Expired: Dec 25, 2015, 11:30 AM CST
In force: 32 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties DeKalb County, AL, Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 58 km from the middle of the area, began a volume at 16:59 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 12:00Z, 5.0 hours before the alert went out and 153 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: 803 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 370 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Dec 25, 10:54 AM CST, 4 minutes earlier.

Area forecast discussion, Dec 25, 10:54 AM CST, 4 minutes before

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Hazardous weather outlook, Dec 25, 4:00 AM CST, 6 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
400 AM CST FRI DEC 25 2015

ALZ001>010-016-TNZ076-096-097-252300-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
400 AM CST FRI DEC 25 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ALABAMA...
NORTHEAST ALABAMA...NORTHWEST ALABAMA AND SOUTHERN MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT...

A HEAVY RAIN EVENT WILL BE POSSIBLE TODAY AND TONIGHT WITH 1 TO 3
INCHES OF RAIN...WITH HIGHER AMOUNTS POSSIBLE BY SATURDAY MORNING.
AS A RESULT A FLOOD WATCH IS IN EFFECT FROM THIS MORNING THROUGH
6 AM SATURDAY MORNING. IN ADDITION TO THE THREAT FOR FLOODING...SOME
THUNDERSTORMS MAY BE STRONG TO SEVERE WITH DAMAGING WIND GUSTS THE
MAIN THREAT. HOWEVER A BRIEF TORNADO CAN NOT BE RULED OUT...ALTHOUGH
THE OVERALL THREAT OF TORNADOES WILL BE LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

SCATTERED THUNDERSTORM ACTIVITY IS EXPECTED FOR SATURDAY AND
SATURDAY NIGHT. HOWEVER...ANOTHER ROBUST STORM SYSTEM IS EXPECTED TO
IMPACT THE AREA BEGINNING PERHAPS AS EARLY AS SUNDAY...WITH EFFECTS
LINGERING INTO EARLY NEXT WEEK. A FEW THUNDERSTORMS DURING THIS
PERIOD COULD BE STRONG TO SEVERE.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY
BE NEEDED LATER THIS MORNING THROUGH THE EVENING.

In the hours before

Special weather statement, Dec 25, 8:54 AM CST, 2 hours 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
854 AM CST FRI DEC 25 2015

ALZ004>007-251600-
MORGAN AL-MADISON AL-LAWRENCE AL-LIMESTONE AL-
854 AM CST FRI DEC 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MORGAN...NORTHWESTERN
MADISON...LAWRENCE AND LIMESTONE COUNTIES UNTIL 1000 AM CST...

AT 854 AM CST...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTH OF ATHENS TO
6 MILES SOUTHWEST OF MOULTON...AND MOVING EAST AT 45 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
HUNTSVILLE...DECATUR...MADISON...ATHENS...HARTSELLE...MOULTON...
REDSTONE ARSENAL...MOORES MILL...MERIDIANVILLE AND HAZEL GREEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO MINOR FLOODING ON ROADS AND IN LOW LYING AREAS. DO NOT DRIVE
YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3499 8633 3431 8696 3434 8753 3442 8753
      3500 8708
TIME...MOT...LOC 1454Z 289DEG 40KT 3490 8694 3442 8739

07

Special weather statement, Dec 25, 9:12 AM CST, 1 hour 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
912 AM CST FRI DEC 25 2015

ALZ008>010-251615-
MARSHALL AL-DE KALB AL-JACKSON AL-
912 AM CST FRI DEC 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MARSHALL...
NORTHEASTERN DE KALB AND JACKSON COUNTIES UNTIL 1015 AM CST...

AT 911 AM CST...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR SOUTH PITTSBURG TO
WOODVILLE...AND MOVING EAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
SCOTTSBORO...FORT PAYNE...RAINSVILLE...BRIDGEPORT...HENAGAR...
STEVENSON...SYLVANIA...HOLLYWOOD...POWELL AND GRANT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO MINOR FLOODING ON ROADS AND IN LOW LYING AREAS. DO NOT DRIVE
YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3449 8556 3451 8639 3452 8633 3456 8631
      3457 8633 3459 8630 3460 8633 3462 8633
      3499 8592 3498 8561 3454 8551
TIME...MOT...LOC 1511Z 270DEG 43KT 3504 8580 3461 8629

STUMPF

Local storm report, Dec 25, 9:35 AM CST, 1 hour 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
935 AM CST FRI DEC 25 2015

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

0923 AM     FLOOD            4 NNW MADISON           34.75N 86.76W
12/25/2015                   MADISON            AL   PUBLIC

            KNOX CREEK FLOWING OVER US HIGHWAY 72 NEAR MADISON
            HOSPITAL IN MADISON. RELAYED FROM SOCIAL MEDIA.

0925 AM     FLOOD            6 WNW HUNTSVILLE        34.77N 86.68W
12/25/2015                   MADISON            AL   PUBLIC

            DRY CREEK FLOWING OVER THE BRIDGE ON PLUMMER ROAD WEST OF
            RESEARCH PARK BLVD.

&&

BCC

Special weather statement, Dec 25, 9:38 AM CST, 1 hour 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
938 AM CST FRI DEC 25 2015

ALZ006>009-016-251630-
CULLMAN AL-MARSHALL AL-MORGAN AL-MADISON AL-JACKSON AL-
938 AM CST FRI DEC 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CULLMAN...
MARSHALL...SOUTHEASTERN MORGAN...SOUTHEASTERN MADISON AND
SOUTHWESTERN JACKSON COUNTIES UNTIL 1030 AM CST...

AT 938 AM CST...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
ARAB...MOVING NORTHEAST AT 45 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SCOTTSBORO...GUNTERSVILLE...ARAB...GRANT...SECTION...WOODVILLE...
BAILEYTON...PLEASANT GROVES...LANGSTON AND UNION GROVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LOCALLY HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY
LEAD TO MINOR FLOODING ON ROADS AND IN LOW LYING AREAS. DO NOT DRIVE
YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3447 8603 3447 8606 3442 8611 3423 8642
      3426 8644 3426 8649 3425 8650 3425 8652
      3423 8652 3420 8655 3421 8656 3431 8671
      3478 8616 3455 8591
TIME...MOT...LOC 1538Z 231DEG 39KT 3429 8658

STUMPF

Local storm report, Dec 25, 10:05 AM CST, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1005 AM CST FRI DEC 25 2015

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

0930 AM     FLOOD            4 NNE ARAB              34.36N 86.46W
12/25/2015                   MARSHALL           AL   EMERGENCY MNGR

            INTERSECTION OF GLENDALE ROAD AT EDDY SCANT CITY ROAD IS
            FLOODED AND CLOSED.

0945 AM     FLOOD            5 E MOULTON             34.49N 87.20W
12/25/2015                   LAWRENCE           AL   EMERGENCY MNGR

            WATER RESCUE FROM A TRAILER ALONG COUNTY ROAD 220.

0945 AM     FLOOD            HARTSELLE               34.44N 86.94W
12/25/2015                   MORGAN             AL   PUBLIC

            WATER COVERING YARDS AND MOVING INTO HOMES

&&

BCC

Local storm report, Dec 25, 10:18 AM CST, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1018 AM CST FRI DEC 25 2015

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

0945 AM     FLOOD            3 S FRENCH MILL         34.73N 86.88W
12/25/2015                   LIMESTONE          AL   COUNTY OFFICIAL

            INTERSECTION OF MOORESVILLE RD AND BROWNSFERRY RD FLOODED
            AND IMPASSABLE. RELAYED FROM COUNTY SOCIAL MEDIA.

&&

BCC

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 24, 8:40 PM CST	River Flood Warning	HUN	Madison	58 hr
Dec 24, 8:43 PM CST	River Flood Warning	HUN	Jackson, Madison, Marshall	5 days
Dec 24, 8:44 PM CST	River Flood Warning	HUN	Lawrence	4 days
Dec 25, 5:02 AM CST	Special Weather Statement	HUN	Marshall	43 min
Dec 25, 5:28 AM CST	Special Weather Statement	HUN	Cullman	32 min
Dec 25, 6:23 AM CST	Special Weather Statement	HUN	Marshall	52 min
Dec 25, 7:26 AM CST	Special Weather Statement	HUN	Jackson	34 min
Dec 25, 7:55 AM CST	Special Weather Statement	HUN	Franklin	50 min
Dec 25, 8:00 AM CST	Areal Flood Warning	HUN	Lauderdale, Limestone, Madison	6 hr
Dec 25, 8:02 AM CST	Special Weather Statement	HUN	Madison	43 min
Dec 25, 8:18 AM CST	Areal Flood Warning	HUN	Cullman, Marshall, Morgan	6 hr
Dec 25, 8:45 AM CST	Areal Flood Warning	HUN	Jackson, Madison, Marshall	6 hr
Dec 25, 8:46 AM CST	Special Weather Statement	HUN	Jackson	29 min
Dec 25, 8:54 AM CST	Special Weather Statement	HUN	Lawrence, Limestone, Madison, Morgan	66 min
Dec 25, 8:55 AM CST	Areal Flood Warning	HUN	Franklin, Lawrence, Morgan	6 hr
Dec 25, 9:12 AM CST	Special Weather Statement	HUN	Jackson	63 min
Dec 25, 9:24 AM CST	River Flood Warning	HUN	Madison	33 hr
Dec 25, 9:38 AM CST	Special Weather Statement	HUN	Marshall	52 min
Dec 25, 9:48 AM CST	Flash Flood Warning	HUN	Lawrence, Limestone, Madison, Morgan	6 hr
Dec 25, 9:55 AM CST	Areal Flood Warning	HUN	DeKalb, Jackson, Marshall	6 hr
Dec 25, 10:18 AM CST	Severe Thunderstorm Warning	HUN	DeKalb	27 min
Dec 25, 10:23 AM CST	Areal Flood Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	6 hr
Dec 25, 10:51 AM CST	Flash Flood Warning	HUN	DeKalb, Jackson, Marshall	4 hr
Dec 25, 11:48 AM CST	Flash Flood Warning	HUN	Cullman	9 hr
Dec 25, 12:30 PM CST	Flash Flood Warning	HUN	Colbert, Franklin, Lawrence	6 hr
Dec 25, 1:00 PM CST	River Flood Warning	HUN	Colbert, Lauderdale	10 days
Dec 25, 1:00 PM CST	River Flood Warning	HUN	Colbert, Lauderdale, Limestone, Morgan	7 days
Dec 25, 1:21 PM CST	River Flood Warning	HUN	Madison, Marshall, Morgan	6 days
Dec 25, 1:29 PM CST	Flash Flood Warning	HUN	Jackson, Madison, Marshall, Morgan	6 hr
Dec 25, 1:56 PM CST	Areal Flood Warning	HUN	Colbert, Jackson, Lauderdale, Lawrence, Limestone, Madison	6 hr
Dec 25, 2:34 PM CST	Flash Flood Warning	HUN	DeKalb, Jackson, Marshall	6 hr
Dec 25, 3:45 PM CST	Flash Flood Warning	HUN	Cullman	5 hr
Dec 25, 4:26 PM CST	Areal Flood Warning	HUN	Colbert, Franklin, Lawrence, Limestone, Madison, Morgan	25 hr
Dec 25, 9:54 AM CST	River Flood Warning	HUN	Franklin, Lincoln	43 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2015 Every severe thunderstorm warning in 2015

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.