Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 29, NWS Huntsville, AL

April 28, 2014Franklin County, Tennessee

NWS Huntsville, AL issued this severe thunderstorm warning at Apr 28, 2014, 7:26 PM CDT for Franklin County, Tennessee. It was in force for 34 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: Apr 28, 2014, 7:26 PM CDT (00:26 UTC)
Expired: Apr 28, 2014, 8:00 PM CDT
In force: 34 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

County Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 25 km from the middle of the area, began a volume at 00:27 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 12:39 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.4 hours before the alert went out and 118 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: 1019 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 335 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 2.7
Supercell composite: 15.6

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 Apr 28, 7:18 PM CDT, 8 minutes earlier.

Area forecast discussion, Apr 28, 7:18 PM CDT, 8 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
718 PM CDT MON APR 28 2014

.UPDATE...
MESOSCALE UPDATE.

&&

.MESOSCALE UPDATE...
TORNADIC SUPERCELLS CONTINUE TO PUSH EASTWARD ACROSS THE CWFA THIS
EVENING, ORIENTED SOUTHWEST TO NORTHEAST ACROSS THE AREA. SB CAPE
VALUES OF 1500-2000 J/KG ARE NOSING UP AHEAD OF THE MAIN LINE OF
CONVECTION AS IT SHIFTS EASTWARD, WITH EFFECTIVE SHEAR APPROACHING
500 M2/S2. THE SIGTOR REMAINS ~4, WITH THE SUPERCELL COMPOSITE
PARAMETER DISPLAYING A BULLSEYE OF 20 DIRECTLY OVER THE HUN CWFA.
THIS WILL LEAD TO A TORNADIC THREAT FOR SEVERAL MORE HOURS.

AN H5 JET CONTINUES TO DIG NORTHEASTWARD AROUND THE BASE OF THE
UPPER TROF OVER THE MIDWEST, PROVIDING DIVERGENT FLOW ALOFT,
ENHANCING LIFT FOR THE SEVERE STORMS ONGOING ACROSS THE AREA. AN H85
JET OF 40-50KTS FROM THE SW WILL COMBINE WITH A 925MB JET FROM THE
S/SE TO ENHANCE LL FLOW AND A DAMAGING WIND THREAT.

THE CENTER OF THE UPPER LOW IS LOCATED OVER NWRN MO/SWRN IA, WITH
THE SFC LOW LOCATED JUST SW OF THE UPPER LOW. THE COLD FRONT HAS
MEANDERED CLOSER TO THE CWFA, NOW ON THE DOORSTEP OF THE MS RIVER,
WITH A MESO HIGH NOTED BEHIND THE INITIAL LINE OF SEVERE STORMS IN
NRN MS.

THE LINE WILL CONTINUE TO SHIFT EASTWARD ACROSS THE CWFA, WITH THE HP
SUPERCELLS CONTINUING TO PRODUCE PROLIFIC RAIN RATES OF 4+ INCHES PER
HOUR. A FEW BASINS IN NW AL HAVE SURPASSED 4 OR 5 INCHES OF RAINFALL
IN THE SPAN OF TWO HOURS OR LESS, WITH THE AREAS WITHIN TRAINING
CELLS MEASURING A BIT MORE.

WILL CONTINUE TO MONITOR RADAR TRENDS AND PROVIDE MESOSCALE UPDATES
AS NECESSARY, BECAUSE WE'RE NOT OUT OF THE WOODS JUST YET.

12

&&

.AVIATION...
/ISSUED 653 PM CDT MON APR 28 2014/
FOR 00Z TAFS...VFR CONDITIONS WILL PREVAIL OUTSIDE OF THUNDERSTORM
ACTIVITY. STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE EAST
NORTHEAST OVER THE NEXT FEW HOURS WITH CIG AND VIS DROPS /IFV TO
MVFR CONDITIONS POSSIBLE/. SOME OF THESE STORMS WILL AFFECT KHSV AND
KMSL PRODUCING HIGH WINDS...HAIL...AND LIGHTNING THOUGH 06Z. AFTER
THIS TIME...LIGHT RAIN WILL LINGER FOR A FEW HOURS AND CIGS WILL
IMPROVE. TOWARD MID DAY ANOTHER ROUND OF THUNDERSTORMS WILL
DEVELOP...INCREASING IN COVERAGE THROUGH THE END OF THE TAF PERIOD.

JMS

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR ALZ001>010-016.

TN...FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR TNZ076-096-097.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.

Hazardous weather outlook, Apr 28, 2:28 PM CDT, 4 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
228 PM CDT MON APR 28 2014

ALZ001>010-016-TNZ076-096-097-291000-
LAUDERDALE-COLBERT-FRANKLIN AL-
LAWRENCE-LIMESTONE-MADISON-MORGAN-MARSHALL-JACKSON-DEKALB-CULLMAN-
MOORE-LINCOLN-FRANKLIN TN-
228 PM CDT MON APR 28 2014

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

SIGNIFICANT SEVERE WEATHER OUTBREAK POSSIBLE ACROSS THE TENNESSEE
VALLEY LATER THIS AFTERNOON THROUGH THIS EVENING.

ADDITIONAL THUNDERSTORMS WILL DEVELOP ACROSS THE REGION LATER THIS
AFTERNOON AND INTO THIS EVENING. ALL TYPES OF SEVERE WEATHER ARE
POSSIBLE WITH THIS ROUND OF THUNDERSTORMS...INCLUDING DAMAGING
WINDS...TORNADOES...LARGE HAIL...AND FLASH FLOODING. A FEW STRONG
TORNADOES ARE POSSIBLE. THE THREAT FOR FLASH FLOODING WILL INCREASE
THIS EVENING AS MULTIPLE ROUNDS OF HEAVY RAINFALL OCCUR...ESPECIALLY
ACROSS NORTHWEST ALABAMA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

ONE FINAL ROUND OF THUNDERSTORMS IS EXPECTED ALONG A COLD FRONT AS
IT MOVES ACROSS THE AREA TUESDAY AFTERNOON AND EVENING. SOME OF THESE
STORMS MAY ALSO PRODUCE SEVERE WEATHER...WITH LARGE HAIL AND DAMAGING
WINDS AS THE PRIMARY THREATS.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
REQUESTED LATER THIS AFTERNOON AND TONIGHT.

In the hours before

Local storm report, Apr 28, 4:58 PM CDT, 2 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
458 PM CDT MON APR 28 2014

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

0400 PM     TORNADO          2 NNW RUSSELLVILLE      34.53N 87.74W
04/28/2014                   FRANKLIN           AL   STORM CHASER

            STORM CHASER REPORTED A TORNADO ON THE GROUND NORTHWEST
            OF RUSSELLVILLE.

&&

KWEBER

Local storm report, Apr 28, 5:04 PM CDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
504 PM CDT MON APR 28 2014

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

0359 PM     TSTM WND DMG     2 NNW RUSSELLVILLE      34.53N 87.74W
04/28/2014                   FRANKLIN           AL   EMERGENCY MNGR

            MULTIPLE TREES AND POWERLINES DOWN NORTHWEST OF
            RUSSELLVILLE HIGH SCHOOL.

&&

KWEBER

Local storm report, Apr 28, 5:22 PM CDT, 2 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
522 PM CDT MON APR 28 2014

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

0521 PM     HAIL             ELKMONT                 34.93N 86.98W
04/28/2014  E2.75 INCH       LIMESTONE          AL   EMERGENCY MNGR

            BASEBALL SIZED HAIL WAS REPORTED.

&&

KWEBER

Local storm report, Apr 28, 5:45 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
545 PM CDT MON APR 28 2014

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

0330 PM     TSTM WND DMG     RED BAY                 34.44N 88.14W
04/28/2014                   FRANKLIN           AL   EMERGENCY MNGR

            MULTIPLE REPORTS OF TREES DOWN...SOME ON BUILDINGS...AND
            POWER POLES DOWN. ONE WOMAN WAS TRAPPED IN HER HOUSE...NO
            INJURIES REPORTED.

&&

KWEBER

Local storm report, Apr 28, 6:58 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
658 PM CDT MON APR 28 2014

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

0620 PM     TSTM WND DMG     WSW LINCOLN             35.01N 86.51W
04/28/2014                   LINCOLN            TN   AMATEUR RADIO

            POWERLINES DOWN...AND TREES DOWN. OLD LINCOLN ROAD AND
            LINCOLN ROAD INTERSECTION IMPASSIBLE.

0624 PM     TSTM WND DMG     W LINCOLN               35.02N 86.51W
04/28/2014                   LINCOLN            TN   EMERGENCY MNGR

            WIND DAMAGE REPORTED FROM LINCOLN ROAD TO FLINTVILLE.
            POSSIBLE TORNADO DAMAGE.

&&

KWEBER

Local storm report, Apr 28, 7:26 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
726 PM CDT MON APR 28 2014

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

0507 PM     FUNNEL CLOUD     ATHENS                  34.80N 86.97W
04/28/2014                   LIMESTONE          AL   AMATEUR RADIO

            WALL CLOUD AND HEAVY ROTATION REPORTED SOUTH OF ATHENS.

0512 PM     HAIL             ATHENS                  34.80N 86.97W
04/28/2014  E1.75 INCH       LIMESTONE          AL   TRAINED SPOTTER

            GOLF BALL SIZED HAIL WAS REPORTED NORTH OF ATHENS.

0512 PM     HAIL             ROGERSVILLE             34.83N 87.29W
04/28/2014  E0.50 INCH       LAUDERDALE         AL   TRAINED SPOTTER

            DIME SIZED HAIL REPORTED.

0515 PM     TSTM WND DMG     2 W ATHENS              34.80N 87.01W
04/28/2014                   LIMESTONE          AL   AMATEUR RADIO

            6 FOOT WIDE OAK TREE BLOWN OVER AND POWER LINES DOWN.

0528 PM     HAIL             2 NNW ATHENS            34.83N 86.98W
04/28/2014  E1.00 INCH       LIMESTONE          AL   TRAINED SPOTTER

            PENNY TO QUARTER SIZED HAIL WAS REPORTED AT AIRPORT ROAD.

0550 PM     TSTM WND DMG     2 NNE RIPLEY            34.79N 87.11W
04/28/2014                   LIMESTONE          AL   TRAINED SPOTTER

            PARTIAL ROOF TORN OFF OF A HOME.

0605 PM     TSTM WND DMG     4 WNW HAZEL GREEN       34.95N 86.64W
04/28/2014                   MADISON            AL   PUBLIC

            TREES AND POWERLINES DOWN.

0615 PM     TSTM WND DMG     3 ESE ELKWOOD           34.96N 86.68W
04/28/2014                   MADISON            AL   AMATEUR RADIO

            LARGE TREE DOWN ON BOBO SECTION ROAD.

&&

KWEBER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:05 PM CDT	Tornado Warning	HUN	Lawrence, Limestone, Morgan	25 min
Apr 28, 8:00 PM CDT	Severe Thunderstorm Warning	HUN	Madison	30 min
Apr 28, 8:15 PM CDT	Flash Flood Warning	HUN	Jackson, Limestone, Madison, Morgan	3 hr
Apr 28, 8:29 PM CDT	Tornado Warning	HUN	Cullman, Lawrence, Morgan	31 min
Apr 28, 8:35 PM CDT	Tornado Warning	HUN	Cullman	25 min
Apr 28, 8:59 PM CDT	Tornado Warning	HUN	Cullman	31 min
Apr 28, 9:11 PM CDT	High Wind Warning	HUN	Cullman, Lawrence, Limestone, Madison, Morgan	2 hr
Apr 28, 9:24 PM CDT	Tornado Warning	HUN	Cullman	36 min
Apr 28, 9:30 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	15 min
Apr 28, 9:36 PM CDT	Tornado Warning	HUN	Cullman	24 min
Apr 28, 9:45 PM CDT	Areal Flood Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence, Limestone, Morgan	3 hr
Apr 28, 9:53 PM CDT	Tornado Warning	HUN	Cullman, Marshall, Morgan	37 min
Apr 28, 10:10 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	35 min
Apr 28, 10:21 PM CDT	Tornado Warning	HUN	Madison, Marshall	39 min
Apr 28, 11:13 PM CDT	Areal Flood Warning	HUN	Jackson, Limestone, Madison, Morgan	4 hr
Apr 28, 11:42 PM CDT	River Flood Warning	HUN	Lawrence	56 hr
Apr 28, 11:44 PM CDT	Tornado Warning	HUN	DeKalb, Marshall	46 min
Apr 29, 12:31 AM CDT	Tornado Warning Emergency	HUN	DeKalb	29 min
Apr 29, 1:00 AM CDT	Tornado Warning	HUN	DeKalb	45 min
Apr 29, 2:10 AM CDT	Flash Flood Warning	HUN	DeKalb	7 hr
Apr 29, 2:17 AM CDT	Severe Thunderstorm Warning	HUN	DeKalb	28 min
Apr 29, 9:08 AM CDT	Flash Flood Watch	HUN	Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more	15 hr
Apr 29, 9:10 AM CDT	Areal Flood Warning	HUN	DeKalb	6 hr
Apr 29, 3:00 PM CDT	Areal Flood Warning	HUN	DeKalb	3 hr
Apr 29, 5:57 PM CDT	Special Weather Statement	HUN	Morgan	33 min
Apr 29, 6:13 PM CDT	Special Weather Statement	HUN	Limestone	32 min
Apr 29, 6:16 PM CDT	River Flood Warning	HUN	Madison	13 hr
Apr 29, 6:19 PM CDT	Special Weather Statement	HUN	Lawrence	26 min
Apr 29, 6:24 PM CDT	Special Weather Statement	HUN	Limestone, Madison, Morgan	36 min
Apr 29, 6:30 PM CDT	Flash Flood Warning	HUN	Colbert, Lauderdale, Lawrence, Limestone	90 min
Apr 29, 6:41 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	34 min
Apr 28, 7:52 PM CDT	Flash Flood Warning	HUN	Franklin, Lincoln, Moore	3 hr
Apr 28, 8:09 PM CDT	Tornado Warning Emergency	HUN	Lincoln	36 min
Apr 28, 8:11 PM CDT	Flash Flood Warning	HUN	Lincoln, Moore	3 hr
Apr 28, 8:27 PM CDT	Tornado Warning Emergency	HUN	Franklin, Lincoln, Moore	33 min
Apr 29, 4:41 PM CDT	Special Weather Statement	HUN	Lincoln	34 min
Apr 29, 5:05 PM CDT	Special Weather Statement	HUN	Moore	25 min
Apr 29, 5:46 PM CDT	Special Weather Statement	HUN	Lincoln	44 min
Apr 29, 6:46 PM CDT	Special Weather Statement	HUN	Lincoln	29 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2014 Every severe thunderstorm warning in 2014

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.