Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 160, NWS Tallahassee, FL

June 22, 20154 counties in Florida; Lowndes County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 22, 2015, 5:36 PM EDT for 4 counties in Florida; Lowndes County, Georgia. It was in force for 39 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 22, 2015, 5:36 PM EDT (21:36 UTC)
Expired: Jun 22, 2015, 6:15 PM EDT
In force: 39 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Jefferson County, FL, Lafayette County, FL, Madison County, FL, Taylor County, FL, Lowndes County, GA

The radar

The Moody AFB radar (KVAX), 77 km from the middle of the area, began a volume at 21:38 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.6 hours before the alert went out and 78 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: 626 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1486 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 44 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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 3:26 PM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, Jun 22, 3:26 PM EDT, 2 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
326 PM EDT MON JUN 22 2015

.NEAR TERM [THROUGH TONIGHT]...

A VERY HOT AND MOIST LOW-LEVEL AIRMASS WILL SUPPORT SCATTERED
THUNDERSTORMS THROUGH THE EARLY EVENING HOURS. HIGH PRESSURE ALOFT
WILL HELP TO LIMIT THE OVERALL COVERAGE. HOWEVER, WITH TEMPERATURES
IN THE UPPER 90S, STEEP LOW-LEVEL LAPSE RATES AND CAPE OVER 3000J/KG
WILL SUPPORT A FEW STRONG TO SEVERE STORMS THIS AFTERNOON. THE
ACTIVITY SHOULD DIMINISH AFTER SUNSET, WITH A QUIET, ALBEIT WARM,
NIGHT ON TAP.

.SHORT TERM [TUESDAY THROUGH WEDNESDAY NIGHT]...

A WEAKENING MID-UPPER LEVEL RIDGE WILL BUILD EASTWARD FROM THE
CENTRAL PLAINS INTO THE TENNESSEE VALLEY. MEANWHILE, THE AXIS OF THE
SURFACE RIDGE WILL REMAIN SOUTH OF OUR CWA THROUGH THE PERIOD. LOW
LEVEL FLOW WILL BE LIGHT ONSHORE WHILE WINDS ALOFT WILL BE LIGHT AND
VARIABLE. MOISTURE WILL BE PLENTIFUL WITH FORECAST SOUNDINGS SHOWING
PW'S AT OR JUST ABOVE 2.0". DUE TO WEAK STEERING CURRENTS, STORMS
WILL BE SLOW MOVERS WITH THE POTENTIAL FOR HEAVY DOWNPOURS.
WIDEPSREAD CONVECTION WILL BE SOMEWHAT INHIBITED DUE TO BUILDING
HEIGHTS. THUS, POPS WILL BE IN THE 30-40% RANGE FOR BOTH DAYS. MAX
TEMPS WILL BE VERY HOT WITH MID TO UPPER 90S ACROSS INLAND AREAS.
THIS COMBINED WITH DEW POINTS IN THE LOWER 70S WILL PUSH HEAT
INDICES ABOVE HEAT ADVISORY CRITERIA (>108) MOST LOCATIONS TUESDAY
AND POSSIBLY AGAIN ON WEDNESDAY. A HEAT ADVISORY WILL BE IN EFFECT
FOR TUESDAY AFTERNOON.

.LONG TERM [THURSDAY THROUGH MONDAY]...

THE MID TO UPPER LEVEL RIDGE WILL BREAK DOWN AS A BROAD UPPER
LEVEL TROUGH DEEPENS OVER THE EASTERN CONUS. THE AMPLIFYING TROUGH
MAY EVEN ALLOW A SURFACE FRONT/TROUGH TO DROP INTO THE CWA ON
MONDAY. WITH THIS PATTERN, WE CAN EXPECT MAX TEMPS TO RETURN TO
NEAR SEASONAL LEVELS (LOWER 90S) ALONG WITH AN INCREASE IN
AFTERNOON/EVENING CONVECTION.

&&

.AVIATION...

[THROUGH 18Z TUESDAY] KTLH AND KVLD HAVE THE BEST CHANCE AT SEEING
THUNDERSTORMS THIS AFTERNOON. OTHERWISE, VFR CONDITIONS AND LIGHT
WINDS WILL PREVAIL TROUGH THE FORECAST PERIOD.

&&

.MARINE...

LIGHT WINDS AND A WEAK PRESSURE PATTERN SHOULD GENERALLY KEEP
WINDS BELOW 10 KNOTS AND SEAS 2 FEET OR LESS. DAILY INCREASES IN
WINDS TO AROUND 10-15 KNOTS AND AN INCREASING CHOP ARE LIKELY EACH
DAY IN THE AFTERNOON NEAR THE COAST WITH THE SEA BREEZE
CIRCULATION.

&&

.FIRE WEATHER...

HIGH MIXING HEIGHTS WILL LEAD TO HIGH DISPERSION INDICES IN THE
AFTERNOON ON TUESDAY AND WEDNESDAY. THERE ARE NO OTHER FIRE
WEATHER CONCERNS.

&&

.HYDROLOGY...

AFTERNOON SEA-BREEZE STORMS WILL BRING SCATTERED RAINFALL TO THE
AREA THROUGH THE WEEK, WITH RAINFALL TOTALS REMAINING LOW. NO
WIDESPREAD FLOODING IS EXPECTED.

&&

.PRELIMINARY POINT TEMPS/POPS...

TALLAHASSEE   74  97  76  96  76 /  20  40  30  40  20
PANAMA CITY   78  93  78  93  79 /  20  30  20  30  20
DOTHAN        74  98  75  97  75 /  20  30  30  40  20
ALBANY        75  99  75  98  75 /  20  40  30  30  20
VALDOSTA      74  99  75  98  75 /  30  40  30  30  20
CROSS CITY    74  95  76  93  76 /  20  40  30  40  20
APALACHICOLA  78  90  79  90  79 /  20  30  20  30  20

&&

.TAE WATCHES/WARNINGS/ADVISORIES...

FL...HEAT ADVISORY FROM 11 AM EDT /10 AM CDT/ TO 6 PM EDT /5 PM CDT/
     TUESDAY FOR CALHOUN-CENTRAL WALTON-COASTAL BAY-COASTAL
     DIXIE-COASTAL FRANKLIN-COASTAL GULF-COASTAL JEFFERSON-
     COASTAL TAYLOR-COASTAL WAKULLA-GADSDEN-HOLMES-INLAND BAY-
     INLAND DIXIE-INLAND FRANKLIN-INLAND GULF-INLAND JEFFERSON-
     INLAND TAYLOR-INLAND WAKULLA-JACKSON-LAFAYETTE-LEON-LIBERTY-
     MADISON-NORTH WALTON-SOUTH WALTON-WASHINGTON.

GA...HEAT ADVISORY FROM 11 AM TO 6 PM EDT TUESDAY FOR BAKER-BEN HILL-
     BERRIEN-BROOKS-CALHOUN-CLAY-COLQUITT-COOK-DECATUR-DOUGHERTY-
     EARLY-GRADY-IRWIN-LANIER-LEE-LOWNDES-MILLER-MITCHELL-
     QUITMAN-RANDOLPH-SEMINOLE-TERRELL-THOMAS-TIFT-TURNER-WORTH.

AL...HEAT ADVISORY FROM 10 AM TO 5 PM CDT TUESDAY FOR COFFEE-DALE-
     GENEVA-HENRY-HOUSTON.

GM...NONE.

&&

NEAR TERM...CAMP
SHORT TERM...BARRY
LONG TERM...BARRY
AVIATION...CAMP
MARINE...BARRY
FIRE WEATHER...WESTON
HYDROLOGY...GODSEY

In the hours before

Special weather statement, Jun 22, 4:16 PM EDT, 1 hour 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
416 PM EDT MON JUN 22 2015

FLZ012>014-026-112-222100-
INLAND GULF FL-INLAND GULF FL-COASTAL BAY FL-INLAND BAY FL-
CALHOUN FL-LIBERTY FL-
416 PM EDT MON JUN 22 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL GULF...SOUTHWESTERN
CALHOUN AND EAST CENTRAL BAY COUNTIES IN THE PANHANDLE OF FLORIDA
UNTIL 500 PM EDT/400 PM CDT/...

AT 416 PM EDT /316 PM CDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED A STRONG THUNDERSTORM NEAR STONEMILL CREEK...OR 18 MILES
SOUTHWEST OF BLOUNTSTOWN...MOVING SOUTHEAST AT 85 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LYNN HAVEN...SPRINGFIELD...SCOTTS FERRY...BAYOU GEORGE...NIXON...CAMP
FLOWERS...YOUNGSTOWN...CAIRO...CHIPOLA PARK...COLLEGE STATION...
FRINK...BROAD BRANCH...MAJETTE...KINARD...ABE SPRINGS...
BRANNONVILLE...RECOTA BEACH...BAYHEAD AND CEDAR GROVE.

LAT...LON 3038 8563 3040 8516 3018 8505 3017 8562
      3026 8562 3027 8560 3026 8559 3030 8558
      3031 8558 3033 8557 3032 8552 3033 8556
      3036 8555 3033 8558 3033 8559 3028 8560
      3027 8562
TIME...MOT...LOC 2016Z 305DEG 73KT 3021 8523

1-WESTON

Local storm report, Jun 22, 5:17 PM EDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
517 PM EDT MON JUN 22 2015

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

0429 PM     TSTM WND DMG     5 SW WOODVILLE          30.27N 84.31W
06/22/2015                   WAKULLA            FL   911 CALL CENTER

            POWER LINE DOWN

&&

MCDERMOT

Local storm report, Jun 22, 5:20 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
520 PM EDT MON JUN 22 2015

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

0425 PM     TSTM WND DMG     1 SSW LEONARDS          30.30N 84.35W
06/22/2015                   WAKULLA            FL   911 CALL CENTER

            TREE DOWN ON A POWER LINE

&&

MCDERMOT

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 22, 3:53 PM EDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	37 min
Jun 22, 3:56 PM EDT	Heat Advisory	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	26 hr
Jun 22, 4:16 PM EDT	Special Weather Statement	TAE	Calhoun	44 min
Jun 22, 6:25 PM EDT	Severe Thunderstorm Warning	TAE	Ben Hill, Irwin	13 min

Nearby

Severe Thunderstorm Warnings in Florida, 2015 Severe Thunderstorm Warnings in Georgia, 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.