Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 164, NWS Huntsville, AL

June 15, 2011DeKalb County, Jackson County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Jun 15, 2011, 2:13 PM CDT for DeKalb County, Jackson County, Alabama. It was in force for 47 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: Jun 15, 2011, 2:13 PM CDT (19:13 UTC)
Expired: Jun 15, 2011, 3:00 PM CDT
In force: 47 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties DeKalb County, AL, Jackson County, AL

The radar

The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 19:12 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
Jun 15, 11:52 AM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.2 hours before the alert went out and 179 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: 1677 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 88 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 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 Jun 15, 1:36 PM CDT, 37 minutes earlier.

Area forecast discussion, Jun 15, 1:36 PM CDT, 37 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
136 PM CDT WED JUN 15 2011

.DISCUSSION...
MONITORING MESOSCALE AND CONVECTIVE TRENDS FOR THE EVENING
FORECAST. CURRENTLY EXPECT SCATTERED THUNDERSTORMS TO BCM NMRS IN
VERY UNSTABLE ENVIRONMENT AS THE SHORTWAVE/VORTICITY AXIS SHIFTS EWD.
MULTIPLE BANDS OF CONVECTION APPEAR TO BE DEVELOPING ALONG
CONVERGENCE LINES ACROSS SRN MIDDLE TN INTO NRN AL. THE STRONGER
CONVERGENCE ZONE APPEARS TO BE SHOWING UP SW OF NASHVILLE INTO NERN
MS...WHILE ANOTHER RUNS FROM NEAR HUNTSVILLE TO JASPER IN AL. THE RUC
ATTEMPTS TO ORGANIZE A MORE LINEAR MCS BAND OVER THE NEXT FEW HRS
THAT PROPAGATES SEWD TOWARD THE I-20/59 CORRIDORS. THERE IS
ADDITIONAL CONVECTION N OF MEMPHIS...WHILE THE COLD FRONT SITS ACROSS
SERN MO INTO NRN AR. THIS FRONT WEAKENS WITH TIME TNGT...SO NOT
EXPECTING A "SWEEPING" CLEAN OF THE AIRMASS TNGT. SO WILL CARRY POPS
INTO THE OVERNIGHT HRS IN OUR SERN COUNTIES...AND THAT MAY NEED
FURTHER ADJUSTMENT. SOME PATCHY FG IS PSBL...BUT I HESITATE TO PLACE
IT INTO THE FCST UNTIL RAIN AREAS ARE BETTER DEFINED.

BETWEEN NOW AND SATURDAY ARE OUR BEST CHANCES...PERHAPS ONLY CHANCES
OF RAIN FOR THE NEXT 7 DAYS. ADDITIONAL WEAK SHORTWAVES DROP SEWD
THRU THE NW FLOW...WITH THE BEST SHOT ON FRIDAY AFTN. HOWEVER...I
HAVE CONCERNS THAT A CAP WL OVERSPREAD THE REGION THAT WILL RELEGATE
TSRA TO THE NE OF OUR FCST AREA. WL MAINTAIN SCHC POPS FOR NOW.

ANOTHER PROLONGED HEAT WAVE WL DEVELOP LATER THIS WEEKEND INTO NEXT
WEEK. TEMPS WL BEGIN TO WARM EACH DAY...AND WITH A BIT MORE MUGGINESS
THAN PREVIOUS DAYS. A STRONG 5H RIDGE BUILDS NE ACROSS THE TN VALLEY
SUNDAY INTO MONDAY. HAVE KEPT FCST TEMPS IN THE M-U90S IN WRN
PORTIONS OF OUR FORECAST AREA...AND U80S-L90S FURTHER E. RAIN CHANCES
MAY AGAIN INCREASE DAYS 8-9 AS THE RIDGE SHIFTS E AND BREAKS DOWN A
BIT. THE ECMWF ADVERTISES A TROF SIMILAR TO THE ONE WE HAVE ON OUR
HANDS CURRENTLY WITH A COLD FRONTAL PASSAGE ON THUR NIGHT OR FRIDAY.
&&

.PRELIMINARY POINT TEMPS/POPS...
HUNTSVILLE    70  95  72  94  72 /  50  10  10  20  10
SHOALS        69  95  71  96  73 /  40  10  10  20  10
VINEMONT      72  94  67  94  69 /  50  10  10  20  10
FAYETTEVILLE  69  93  69  93  70 /  50  10  10  20  10
ALBERTVILLE   69  93  65  92  68 /  60  10  10  20  10
FORT PAYNE    67  92  63  92  67 /  60  10  10  20  10

&&

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

AK

Hazardous weather outlook, Jun 15, 2:00 PM CDT, 13 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
200 PM CDT WED JUN 15 2011

ALZ001>010-016-TNZ076-096-097-160000-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
200 PM CDT WED JUN 15 2011

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

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

SCATTERED SEVERE THUNDERSTORMS CAPABLE OF HAIL UP TO BASEBALL
SIZED...DAMAGING WINDS UP TO 70 MPH...AND FREQUENT LIGHTNING ARE
POSSIBLE THIS AFTERNOON INTO EARLY THIS EVENING. A WEAK COOL FRONT
WILL SHIFT THE THREAT OF THUNDERSTORMS SOUTHEAST OF THE AREA BY LATE
THIS EVENING OR OVERNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

ISOLATED THUNDERSTORMS ARE POSSIBLE FRIDAY THROUGH TUESDAY ACROSS
MUCH OF THE OUTLOOK AREA. BRIEF HEAVY RAINFALL AND GUSTY WINDS ARE
POSSIBLE WITH THE STRONGER STORMS.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
UNDERWAY THIS AFTERNOON INTO EARLY EVENING.

KULA

In the hours before

Local storm report, Jun 15, 1:54 PM CDT, 19 minutes before

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Local storm report, Jun 15, 1:55 PM CDT, 18 minutes before

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Local storm report, Jun 15, 1:56 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
156 PM CDT WED JUN 15 2011

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

0143 PM     HAIL             1 SE OWENS CROSSROADS   34.57N 86.45W
06/15/2011  E1.00 INCH       MADISON            AL   CO-OP OBSERVER

&&

JS

Special weather statement, Jun 15, 2:00 PM CDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
200 PM CDT WED JUN 15 2011

ALZ009-010-151945-
DE KALB-JACKSON-
200 PM CDT WED JUN 15 2011

...SIGNIFICANT WEATHER ADVISORY FOR DEKALB AND JACKSON COUNTIES UNTIL
245 PM CDT...

AT 157 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS NEAR HOLLYWOOD...OR 6 MILES NORTHEAST OF
SCOTTSBORO...MOVING NORTHEAST AT 30 MPH.

NICKEL SIZE HAIL...WINDS UP TO 50 MPH...AND HEAVY DOWNPOURS ARE
EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...
  FACKLER...PISGAH.
  STEVENSON...ROSALIE.
  FABIUS.
  FLAT ROCK.
  BRIDGEPORT.
  HIGDON.

THESE THUNDERSTORMS COULD INTENSIFY QUICKLY...SO BE READY TO ACT IF A
WARNING IS ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT
WEDNESDAY EVENING FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE.

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 3461 8602 3485 8611 3500 8564 3500 8561
      3493 8559 3474 8556
TIME...MOT...LOC 1859Z 244DEG 28KT 3474 8594

Local storm report, Jun 15, 2:06 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
206 PM CDT WED JUN 15 2011

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

0150 PM     HAIL             4 WSW WOODVILLE         34.60N 86.34W
06/15/2011  E0.88 INCH       MADISON            AL   TRAINED SPOTTER

            NICKEL SIZE HAIL COVERING THE GROUND.

&&

JS

Local storm report, Jun 15, 2:12 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
212 PM CDT WED JUN 15 2011

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

0145 PM     HAIL             2 E NEW HOPE            34.54N 86.39W
06/15/2011  E1.00 INCH       MADISON            AL   PUBLIC

&&

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 11:21 AM CDT	Special Weather Statement	HUN	Madison	24 min
Jun 15, 11:25 AM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	20 min
Jun 15, 11:43 AM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	32 min
Jun 15, 12:18 PM CDT	Special Weather Statement	HUN	Jackson	42 min
Jun 15, 12:58 PM CDT	Special Weather Statement	HUN	Madison	32 min
Jun 15, 1:26 PM CDT	Special Weather Statement	HUN	Madison	34 min
Jun 15, 1:29 PM CDT	Special Weather Statement	HUN	DeKalb	31 min
Jun 15, 1:38 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	30 min
Jun 15, 2:00 PM CDT	Special Weather Statement	HUN	Jackson	45 min
Jun 15, 2:04 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Marshall	26 min
Jun 15, 2:18 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	27 min
Jun 15, 2:35 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	30 min
Jun 15, 2:38 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	52 min
Jun 15, 4:56 PM CDT	Special Weather Statement	HUN	Lauderdale	34 min
Jun 15, 6:10 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	36 min
Jun 15, 6:16 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	29 min
Jun 15, 6:52 PM CDT	Special Weather Statement	HUN	Lauderdale	38 min
Jun 15, 6:59 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	20 min
Jun 15, 10:09 AM CDT	Special Weather Statement	HUN	Moore	36 min
Jun 15, 10:51 AM CDT	Special Weather Statement	HUN	Franklin	24 min
Jun 15, 11:03 AM CDT	Severe Thunderstorm Warning	HUN	Franklin	15 min
Jun 15, 4:19 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	11 min
Jun 15, 5:02 PM CDT	Special Weather Statement	HUN	Moore	43 min
Jun 15, 5:06 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	39 min
Jun 15, 5:45 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Moore	30 min
Jun 15, 6:04 PM CDT	Special Weather Statement	HUN	Lincoln	26 min
Jun 15, 6:16 PM CDT	Special Weather Statement	HUN	Franklin	29 min
Jun 15, 6:38 PM CDT	Special Weather Statement	HUN	Lincoln, Moore	52 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning in 2011

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.