Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 147, NWS Huntsville, AL

July 5, 2012DeKalb County, Marshall County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jul 5, 2012, 8:38 PM CDT for DeKalb County, Marshall County, Alabama. It was in force for 52 min. 2 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: Jul 5, 2012, 8:38 PM CDT (01:38 UTC)
Expired: Jul 5, 2012, 9:30 PM CDT
In force: 52 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties DeKalb County, AL, Marshall County, AL

What was reported inside it

Time	Report	Where	Remark
Jul 5, 8:50 PM CDT	NON-TSTM WND DMG	Peeks Corner, AL	GUST FRONT WINDS DOWNED TREES IN PEEKS CORNER.
Jul 5, 9:00 PM CDT	TSTM WND DMG	Crossville, AL	SEVERAL 8FT TALL PINE TREES BLOWN DOWN HEAR HWY 160 IN CROSSVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 22 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.6 hours before the alert went out and 176 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: 1415 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 2090 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

954 
WUUS54 KHUN 060138
SVRHUN
ALC049-095-060230-
/O.NEW.KHUN.SV.W.0147.120706T0138Z-120706T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
838 PM CDT THU JUL 5 2012

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN DEKALB COUNTY IN NORTHEAST ALABAMA...
  EASTERN MARSHALL COUNTY IN NORTHEAST ALABAMA...

* UNTIL 930 PM CDT

* AT 837 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTHWEST OF HOPEWELL
  TO 6 MILES EAST OF COLLINSVILLE...OR ALONG A LINE EXTENDING FROM 12
  MILES NORTHEAST OF GUNTERSVILLE TO 8 MILES NORTHWEST OF CENTRE...
  AND MOVING SOUTH AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WHITON...PAINTER...
  RODENTOWN...MCVILLE...
  ARONA...BOAZ...

LAT...LON 3425 8578 3423 8584 3419 8584 3420 8609
      3418 8611 3418 8619 3410 8631 3459 8615
      3454 8615 3451 8609 3449 8610 3446 8608
      3449 8600 3430 8572
TIME...MOT...LOC 0139Z 014DEG 45KT 3447 8617 3421 8577

$$
SS

2 follow-up statements

409 
WWUS54 KHUN 060204
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
904 PM CDT THU JUL 5 2012

ALC049-095-060230-
/O.CON.KHUN.SV.W.0147.000000T0000Z-120706T0230Z/
DEKALB AL-MARSHALL AL-
904 PM CDT THU JUL 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR EASTERN MARSHALL AND SOUTHWESTERN DEKALB COUNTIES...

AT 902 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES SOUTHWEST OF
ALBERTVILLE TO 23 MILES SOUTHEAST OF RODENTOWN...OR ALONG A LINE
EXTENDING FROM 6 MILES SOUTHWEST OF ALBERTVILLE TO HOKES BLUFF...
MOVING SOUTH AT 50 MPH.

THE LINE OF SEVERE THUNDERSTORMS WILL OTHERWISE REMAIN OVER MAINLY
RURAL AREAS OF THE INDICATED COUNTY.

LAT...LON 3445 8619 3443 8610 3449 8610 3442 8607
      3441 8602 3427 8580 3425 8578 3423 8584
      3419 8584 3420 8609 3418 8611 3418 8619
      3410 8631 3459 8615
TIME...MOT...LOC 0204Z 014DEG 45KT 3417 8626 3391 8586

$$

SS

943 
WWUS54 KHUN 060228
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
928 PM CDT THU JUL 5 2012

ALC049-095-060238-
/O.EXP.KHUN.SV.W.0147.000000T0000Z-120706T0230Z/
DEKALB AL-MARSHALL AL-
928 PM CDT THU JUL 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MARSHALL AND
SOUTHWESTERN DEKALB COUNTIES EXPIRES AT 930 PM CDT...

WEATHER SERVICE DOPPLER RADAR INDICATES THE THUNDERSTORM THAT
PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER SEVERE. THEREFORE
THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE.

HEAVY RAIN...SMALL HAIL...GUSTY WINDS...AND FREQUENT LIGHTNING ARE
STILL POSSIBLE FROM THIS THUNDERSTORM. STAY INDOORS UNTIL THE STORM
HAS PASSED.

LAT...LON 3445 8619 3443 8610 3449 8610 3442 8607
      3441 8602 3427 8580 3425 8578 3423 8584
      3419 8584 3420 8609 3418 8611 3418 8619
      3410 8631 3459 8615
TIME...MOT...LOC 0228Z 014DEG 45KT 3388 8635 3362 8595

$$

SS

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 Jul 5, 8:36 PM CDT, 2 minutes earlier.

Area forecast discussion, Jul 5, 8:36 PM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
836 PM CDT THU JUL 5 2012

.DISCUSSION...
A FAIRLY STRONG OUTFLOW BOUNDARY CONTINUES TO PUSH SOUTHEAST FROM
NORTHEASTERN ALABAMA INTO MADISON...MARSHALL...AND CULLMAN COUNTIES
OVER THE NEXT FEW HOURS. STRONG TO SEVERE STORMS WILL CONTINUE TO
DEVELOP...MAINLY EAST OF I-65...AND PUSH SOUTHWARD ACROSS
NORTHEASTERN ALABAMA AND POSSIBLY INTO CULLMAN COUNTY OVER THE NEXT
FEW HOURS. DUE TO THE ONGOING COVERAGE HAVE INCREASED POP TO BETWEEN 60
AND 70 PERCENT EAST OF I-65. FURTHER WEST KEPT ONLY A 30 TO 40
PERCENT CHANCE OF PRECIPITATION. LARGE HAIL WILL REMAIN POSSIBLE WITH
ANY SEVERE STORMS...BUT THE BIGGEST THREAT WILL BE DAMAGING WINDS
BETWEEN 60 AND 80 MPH.

KTW

&&

.AVIATION...
/ISSUED 638 PM CDT THU JUL 5 2012/

MORE CONFIDENT A STORM COULD COME WITHIN THE VICINITY OF KHSV THROUGH
06/03Z...SO INCLUDED A VCTS FROM 06/01Z TO 06/03Z. KMSL LOOKS MORE
DOUBTFULL. VFR CONDITIONS ARE EXPECTED THROUGH MIDNIGHT...BEFORE
VSBYS WILL LIKELY DROP AS FOG DEVELOPS TOWARDS DAYBREAK DUE TO
PREVIOUS RAINFALL AT BOTH KHSV AND KMSL THIS AFTERNOON AND EVENING.
DROPPED VSBYS AT BOTH LOCATIONS TO MVFR CRITERIA DURING THIS TIME.
FUTURE SHIFTS MAY NEED TO ADD TSRA IN FOR FRIDAY...BUT AT THIS TIME
COVERAGE IS TOO UNCERTAIN TO ADD.

KTW

&&

.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE    71  98  72  98  74 /  70  30  20  30  20
SHOALS        74  97  71 100  73 /  40  30  20  30  20
VINEMONT      73  93  70  96  72 /  70  30  20  30  20
FAYETTEVILLE  72  96  71  99  72 /  70  30  20  30  20
ALBERTVILLE   72  96  70  95  70 /  70  30  20  30  20
FORT PAYNE    73  95  68  96  70 /  70  30  20  30  20

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

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

Hazardous weather outlook, Jul 5, 6:30 PM CDT, 2 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HUNTSVILLE AL
630 PM CDT THU JUL 5 2012

ALZ001>010-016-TNZ076-096-097-060730-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
630 PM CDT THU JUL 5 2012

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

.DAY ONE...TONIGHT...

ISOLATED TO SCATTERED THUNDERSTORMS WILL PERSIST ACROSS THE TENNESSEE
VALLEY THROUGH THE EVENING HOURS. A FEW STORMS WILL REACH STRONG TO
MARGINALLY SEVERE LIMITS WITH THE PRIMARY THREATS BEING DAMAGING
WIND GUSTS TO AROUND 60 MPH AND HAIL TO THE SIZE OF QUARTERS. IN
ADDITION...THE SLOW SOUTHWARD PROGRESSION AND ROBUST NATURE OF ANY
DEVELOPING STORMS WILL RESULT IN LOCALLY HEAVY RAINFALL AND FREQUENT
CLOUD TO GROUND LIGHTNING. ANY STRONGER STORMS SHOULD DIMINISH BY
LATE EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE FRIDAY THROUGH
SUNDAY...MAINLY IN THE AFTERNOON AND EVENING HOURS. A FEW STORMS MAY
BE STRONG TO SEVERE...WITH DAMAGING WINDS...LOCALLY HEAVY
RAINFALL...AND FREQUENT LIGHTNING.

AN APPROACHING COLD FRONT WILL INCREASE THE CHANCES FOR MORE
WIDESPREAD COVERAGE OF THUNDERSTORMS ON MONDAY THROUGH WEDNESDAY.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
POSSIBLE THROUGH THIS EVENING. PLEASE FORWARD ANY REPORTS OF DAMAGE
OR HEAVY RAINFALL TO THE NATIONAL WEATHER SERVICE OFFICE IN
HUNTSVILLE...OR YOUR LOCAL EMERGENCY MANAGEMENT AGENCY.

In the hours before

Special weather statement, Jul 5, 6:30 PM CDT, 2 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
630 PM CDT THU JUL 5 2012

TNZ097-060015-
FRANKLIN-
630 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN COUNTY UNTIL 715 PM
CDT...

AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR COWAN...OR 8 MILES EAST OF WINCHESTER...
MOVING SOUTH AT 10 MPH.

PENNY SIZE HAIL...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  COWAN.
  SHERWOOD.

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

&&

LAT...LON 3524 8587 3522 8586 3507 8586 3500 8587
      3499 8610 3499 8618 3528 8603
TIME...MOT...LOC 2330Z 017DEG 8KT 3516 8596

SS

Special weather statement, Jul 5, 7:01 PM CDT, 1 hour 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
701 PM CDT THU JUL 5 2012

ALZ009-010-TNZ097-060115-
JACKSON-DEKALB-FRANKLIN TN-
INCLUDING THE CITIES OF...SCOTTSBORO...FORT PAYNE...WINCHESTER
701 PM CDT THU JUL 5 2012

...GUSTY OUTFLOW WINDS TO IMPACT THE AREA THROUGH 8 PM...

A SOUTHWEST MOVING OUTFLOW BOUNDARY FROM EARLIER THUNDERSTORM
ACTIVITY WILL SWEEP ACROSS PORTIONS OF JACKSON AND DEKALB COUNTIES IN
ALABAMA AND FRANKLIN COUNTY IN SOUTHERN TENNESSEE THROUGH 8 PM.
BRIEF WIND GUSTS TO 50 MPH ARE POSSIBLE.

THESE WINDS WILL BE CAPABLE OF SNAPPING TREE LIMBS AND POSSIBLE
KNOCKING DOWN SMALL...SHALLOW ROOTED TREES AND DAMAGING POWER LINES.
IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY.

Special weather statement, Jul 5, 7:04 PM CDT, 1 hour 34 minutes before

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
704 PM CDT THU JUL 5 2012

ALZ009-010-TNZ097-060130-
JACKSON-DEKALB-FRANKLIN TN-
INCLUDING THE CITIES OF...SCOTTSBORO...FORT PAYNE...WINCHESTER
704 PM CDT THU JUL 5 2012

...GUSTY OUTFLOW WINDS TO IMPACT THE AREA THROUGH 8 PM...

A SOUTHWEST MOVING OUTFLOW BOUNDARY FROM EARLIER THUNDERSTORM
ACTIVITY WILL SWEEP ACROSS PORTIONS OF JACKSON AND DEKALB COUNTIES IN
ALABAMA AND FRANKLIN COUNTY IN SOUTHERN TENNESSEE THROUGH 8 PM.
BRIEF WIND GUSTS TO 50 MPH ARE POSSIBLE.

THESE WINDS WILL BE CAPABLE OF SNAPPING TREE LIMBS AND POSSIBLY
KNOCKING DOWN SMALL...SHALLOW ROOTED TREES AND DAMAGING POWER LINES.
IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY.

Local storm report, Jul 5, 7:14 PM CDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
714 PM CDT THU JUL 05 2012

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

0300 PM     TSTM WND DMG     2 W KILLEN              34.86N 87.57W
07/05/2012                   LAUDERDALE         AL   EMERGENCY MNGR

            TREES WERE BLOWN DOWN AND A MARINA COLLAPSED.

&&

KWEBER

Special weather statement, Jul 5, 7:29 PM CDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
729 PM CDT THU JUL 5 2012

ALZ006-TNZ096-060100-
LINCOLN-MADISON-
729 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR LINCOLN AND MADISON COUNTIES
UNTIL 800 PM CDT...

AT 720 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR FLINTVILLE...OR 11 MILES SOUTHEAST OF
FAYETTEVILLE...MOVING SOUTH AT 15 MPH.

PENNY SIZE HAIL...WINDS UP TO 40 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  ELORA.
  LINCOLN.
  PLEVNA.
  NEW MARKET...FISK.

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

&&

LAT...LON 3514 8637 3512 8636 3513 8635 3512 8632
      3499 8632 3499 8631 3497 8630 3487 8635
      3487 8634 3476 8638 3485 8666 3517 8647
TIME...MOT...LOC 0029Z 021DEG 11KT 3505 8640

SS

Special weather statement, Jul 5, 8:06 PM CDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
806 PM CDT THU JUL 5 2012

ALZ006>010-060215-
MADISON-MORGAN-MARSHALL-JACKSON-DEKALB-
INCLUDING THE CITIES OF...HUNTSVILLE...DECATUR...GUNTERSVILLE...
SCOTTSBORO...FORT PAYNE
806 PM CDT THU JUL 5 2012

...GUSTY OUTFLOW WINDS TO IMPACT THE AREA THROUGH 9 PM...

A SOUTHWEST MOVING OUTFLOW BOUNDARY FROM EARLIER THUNDERSTORM
ACTIVITY WILL SWEEP ACROSS CENTRAL AND SOUTHWEST JACKSON AND DEKALB
COUNTIES...MARSHALL COUNTY...AND SOUTHEASTERN MADISON AND MORGAN
COUNTIES IN ALABAMA THROUGH 9 PM. BRIEF WIND GUSTS TO 50 MPH ARE
POSSIBLE. AS OF 8 PM THIS LINE EXTENDS FROM HYTOP TO HENAGAR AND WILL
CONTINUE TO MOVE SOUTHWEST OVER THE NEXT HOUR.

THESE WINDS WILL BE CAPABLE OF SNAPPING TREE LIMBS AND POSSIBLY
KNOCKING DOWN SMALL...SHALLOW ROOTED TREES AND DAMAGING POWER LINES.
IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:00 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	30 min
Jul 5, 7:53 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	52 min
Jul 5, 8:05 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	40 min
Jul 5, 8:29 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	46 min
Jul 5, 8:51 PM CDT	Severe Thunderstorm Warning	HUN	Marshall	39 min
Jul 5, 9:38 PM CDT	Special Weather Statement	HUN	Lawrence	52 min
Jul 5, 9:53 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence, Morgan	52 min
Jul 5, 10:43 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lawrence	47 min
Jul 6, 11:02 AM CDT	Heat Advisory	HUN	Colbert, Lauderdale	6 hr
Jul 6, 1:08 PM CDT	Special Weather Statement	HUN	Lauderdale	37 min
Jul 6, 1:45 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	30 min
Jul 6, 2:13 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	32 min
Jul 6, 2:16 PM CDT	Special Weather Statement	HUN	Colbert	29 min
Jul 6, 2:33 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin	27 min
Jul 6, 2:45 PM CDT	Special Weather Statement	HUN	Lauderdale	45 min
Jul 6, 2:51 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	24 min
Jul 6, 2:59 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	31 min
Jul 6, 6:54 PM CDT	Special Weather Statement	HUN	Marshall	36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm 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.