Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 46, NWS Tampa Bay, FL

July 12, 2016Highlands County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 12, 2016, 5:02 PM EDT for Highlands County, Florida. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 12, 2016, 5:02 PM EDT (21:02 UTC)
Expired: Jul 12, 2016, 5:45 PM EDT
In force: 43 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Highlands County, FL

The radar

The Melbourne radar (KMLB), 97 km from the middle of the area, began a volume at 21:03 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Tampa Bay, FL (KTBW), launched 12:00Z, 9.0 hours before the alert went out and 102 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: 2031 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 917 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

092 
WUUS52 KTBW 122102
SVRTBW
FLC055-122145-
/O.NEW.KTBW.SV.W.0046.160712T2102Z-160712T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
502 PM EDT TUE JUL 12 2016

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HIGHLANDS COUNTY IN SOUTH CENTRAL FLORIDA...

* UNTIL 545 PM EDT

* AT 502 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SEBRING
  REGIONAL AIRPORT...OR NEAR SEBRING...MOVING WEST AT 10 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  SEBRING...AVON PARK...SEBRING REGIONAL AIRPORT...
  AVON PARK EXECUTIVE AIRPORT...
  AVON PARK AIR FORCE RANGE AND SEBRING SHORES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 2743 8127 2740 8156 2765 8156 2765 8142
      2758 8123
TIME...MOT...LOC 2102Z 099DEG 8KT 2751 8134 

HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

483 
WWUS52 KTBW 122135
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
535 PM EDT TUE JUL 12 2016

FLC055-122145-
/O.EXP.KTBW.SV.W.0046.000000T0000Z-160712T2145Z/
HIGHLANDS FL-
535 PM EDT TUE JUL 12 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HIGHLANDS COUNTY
WILL EXPIRE AT 545 PM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 2743 8127 2740 8156 2765 8156 2765 8142
      2758 8123
TIME...MOT...LOC 2125Z 099DEG 8KT 2751 8134 

$$

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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 2:57 PM EDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 12, 2:57 PM EDT, 2 hours 5 minutes before

Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
257 PM EDT TUE JUL 12 2016

.SHORT TERM (This afternoon-Wednesday)...
A more typical summertime pattern for the area this week as the
broad upper ridge over the region continues while the weak
relative high center moves from the Bahamas today over the state
then into the Eastern Gulf late Wednesday. Western Atlantic
surface high pressure axis holds over the N FL Peninsula keeping
the C and S FL areas in SE low level flow. Warm, humid and
unstable July atmosphere to combine with diurnal heating and
bay/sea breeze boundaries to produce scattered to numerous
thunderstorms through this evening then again Wednesday afternoon.
Best coverage of storms favor I-75 corridor from the Tampa Bay
area southward into SW FL. Temperature around seasonal normals as
well.

&&

.LONG TERM (Wednesday Night-Tuesday)...
Upper ridging over the state weakens Thursday and flow becomes
more zonal across the area. Surface high pressure will ridge
across the area through the period from the Atlantic with the
ridge axis mainly remaining north of the area. This will keep
generally SE flow in place across the area with an afternoon sea
breeze developing each day. Moisture will increase through the
column as the upper ridge weakens and will allow for scattered
afternoon and evening showers and thunderstorms each day forming
along sea breeze and outflow boundaries. Temperatures will remain
in the lower to mid 90s for highs and in the mid 70s to around 80
for lows.

&&

.AVIATION...
Afternoon through evening thunderstorms continue for brief
MVFR/IFRconditions in/near the strongest cells through about
02Z. VRF conditions returning all sites after that through the
overnight hours.

&&

.MARINE...
Light pressure gradient to hold over the E Gulf waters through
the week with light winds and slight seas continuing. Expect seas
2 ft or less and afternoon seabreezes near the coast with
increased thunderstorms near the beaches and coast that may
produce strong gusty winds that would briefly increase and chop up
seas and contain deadly lightning. So mariners need to always pay
attention the weather for their safety.

&&

.FIRE WEATHER...
Summertime humidity values along with afternoon sea breezes
showers and storms will continue through the week.

&&

.Preliminary Point Temps/PoPs...
TPA  78  94  78  92 /  30  30  40  30
FMY  77  93  76  93 /  20  60  30  40
GIF  76  95  76  94 /  30  40  30  40
SRQ  78  91  77  92 /  30  30  30  30
BKV  74  95  74  94 /  30  30  30  30
SPG  80  93  80  92 /  30  30  30  30

&&

.TBW Watches/Warnings/Advisories...
FL...None.
Gulf waters...None.
&&

SHORT TERM/AVIATION/MARINE/FIRE WEATHER...25/Davis
MID TERM/LONG TERM/DECISION SUPPORT...24/Hubbard

Hazardous weather outlook, Jul 12, 5:14 AM EDT, 11 hours 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
514 AM EDT TUE JUL 12 2016

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-130915-
SUMTER-PINELLAS-POLK-HARDEE-HIGHLANDS-DESOTO-COASTAL LEVY-
COASTAL CITRUS-COASTAL HERNANDO-COASTAL PASCO-
COASTAL HILLSBOROUGH-COASTAL MANATEE-COASTAL SARASOTA-
COASTAL CHARLOTTE-COASTAL LEE-INLAND LEVY-INLAND CITRUS-
INLAND HERNANDO-INLAND PASCO-INLAND HILLSBOROUGH-INLAND MANATEE-
INLAND SARASOTA-INLAND CHARLOTTE-INLAND LEE-TAMPA BAY WATERS-
CHARLOTTE HARBOR AND PINE ISLAND SOUND-
COASTAL WATERS FROM TARPON SPRINGS TO SUWANNEE RIVER FL OUT 20 NM-
COASTAL WATERS FROM ENGLEWOOD TO TARPON SPRINGS FL OUT 20 NM-
COASTAL WATERS FROM BONITA BEACH TO ENGLEWOOD FL OUT 20 NM-
WATERS FROM TARPON SPRINGS TO SUWANNEE RIVER FL OUT 20 TO 60 NM-
WATERS FROM ENGLEWOOD TO TARPON SPRINGS FL OUT 20 TO 60 NM-
WATERS FROM BONITA BEACH TO ENGLEWOOD FL OUT 20 TO 60 NM-
514 AM EDT TUE JUL 12 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST
FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE AS EARLY AS LATE MORNING
FOR NEAR COASTAL AREAS. THEREAFTER...STORMS WILL BECOME MORE
SCATTERED DURING THE AFTERNOON AND EVENING HOURS. A FEW STRONG
STORMS MAY PRODUCE STRONG GUSTY WINDS...SMALL HAIL...AND FREQUENT
LIGHTNING. STORMS SHOULD GRADUALLY DIMINISH TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

...THUNDERSTORM IMPACT...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE OVER THE INLAND AREAS BY
EARLY AFTERNOON. THEREAFTER...STORMS WILL BECOME MORE SCATTERED
ALONG THE WEST COAST OF FLORIDA DURING THE LATE AFTERNOON AND
EVENING HOURS. A FEW STRONG STORMS MAY PRODUCE STRONG GUSTY
WINDS...SMALL HAIL...AND FREQUENT LIGHTNING. STORMS SHOULD
GRADUALLY DIMINISH BY LATE EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

WYNN

In the hours before

Special weather statement, Jul 12, 3:22 PM EDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
322 PM EDT TUE JUL 12 2016

FLZ139-239-122000-
COASTAL LEVY-INLAND LEVY-
322 PM EDT TUE JUL 12 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN LEVY COUNTY...

AT 321 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES SOUTHWEST
OF BRONSON...MOVING NORTH AT 5 MPH.

WINDS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CHIEFLAND...BRONSON...EAST BRONSON...WILLISTON HIGHLANDS...
MANATTEE ROAD...ANDREWS AND OTTER CREEK.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 2954 8265 2954 8262 2930 8253 2923 8286
      2946 8300 2947 8298 2949 8298 2957 8268
      2957 8266
TIME...MOT...LOC 1921Z 165DEG 6KT 2937 8274

Special weather statement, Jul 12, 4:03 PM EDT, 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
403 PM EDT TUE JUL 12 2016

FLZ139-239-122045-
COASTAL LEVY-INLAND LEVY-
403 PM EDT TUE JUL 12 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN LEVY COUNTY...

AT 403 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER CHIEFLAND...
MOVING NORTHWEST AT 15 MPH.

WINDS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CHIEFLAND...ANDREWS...MANATTEE ROAD...FANNING SPRINGS...
OTTER CREEK AND MANATEE SPRINGS STATE PARK.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 2958 8278 2958 8276 2956 8275 2956 8270
      2925 8261 2920 8277 2942 8303 2942 8302
      2943 8302 2946 8300 2947 8298 2952 8298
      2952 8297 2954 8298 2956 8295 2959 8294
TIME...MOT...LOC 2003Z 156DEG 17KT 2945 8287

Special weather statement, Jul 12, 4:26 PM EDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
426 PM EDT TUE JUL 12 2016

FLZ056-057-061-262-122115-
HIGHLANDS-INLAND CHARLOTTE-DESOTO-HARDEE-
426 PM EDT TUE JUL 12 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT DESOTO...NORTHEASTERN
CHARLOTTE...SOUTHEASTERN HARDEE AND SOUTHWESTERN HIGHLANDS
COUNTIES...

AT 425 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF ARCADIA TO 15 MILES
WEST OF VENUS TO 10 MILES EAST OF BABCOCK RANCH. MOVEMENT WAS WEST AT
10 MPH.

WINDS UP TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
ARCADIA...SOUTHEAST ARCADIA...BABCOCK RANCH...BABCOCK WEBB WMA...
SWEETWATER...LIMESTONE...BROWNVILLE...GARDNER AND NOCATEE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 2703 8153 2703 8156 2688 8157 2687 8186
      2741 8193 2743 8152
TIME...MOT...LOC 2025Z 103DEG 9KT 2732 8167 2714 8159 2697 8159

Special weather statement, Jul 12, 4:40 PM EDT, 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
440 PM EDT TUE JUL 12 2016

FLZ057-061-262-122115-
HIGHLANDS FL-INLAND CHARLOTTE FL-DESOTO FL-
440 PM EDT TUE JUL 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DESOTO...NORTHEASTERN
CHARLOTTE AND SOUTHWESTERN HIGHLANDS COUNTIES UNTIL 515 PM EDT...

AT 439 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES NORTHEAST OF BABCOCK RANCH...OR 18 MILES SOUTHEAST OF
ARCADIA... MOVING NORTHWEST AT 10 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
BABCOCK RANCH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 2703 8152 2703 8156 2698 8156 2694 8159
      2695 8191 2732 8174 2709 8148
TIME...MOT...LOC 2039Z 121DEG 8KT 2706 8161

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:09 PM EDT	Special Weather Statement	TBW	Hillsborough	36 min
Jul 11, 8:22 PM EDT	Special Weather Statement	TBW	Pasco	38 min
Jul 11, 8:30 PM EDT	Special Marine Warning	TBW		30 min
Jul 11, 8:42 PM EDT	Special Weather Statement	TBW	Sumter	48 min
Jul 11, 9:19 PM EDT	Special Weather Statement	TBW	Hernando	26 min
Jul 11, 9:38 PM EDT	Special Weather Statement	TBW	Sumter	37 min
Jul 11, 10:16 PM EDT	Special Weather Statement	TBW	Citrus	59 min
Jul 12, 3:22 PM EDT	Special Weather Statement	TBW	Levy	38 min
Jul 12, 4:03 PM EDT	Special Weather Statement	TBW	Levy	42 min
Jul 12, 4:26 PM EDT	Special Weather Statement	TBW	DeSoto	49 min
Jul 12, 4:40 PM EDT	Special Weather Statement	TBW	DeSoto	35 min
Jul 12, 5:13 PM EDT	Special Weather Statement	TBW	Charlotte, DeSoto, Hardee	47 min
Jul 12, 6:23 PM EDT	Special Weather Statement	TBW	Hardee	37 min
Jul 12, 6:31 PM EDT	Severe Thunderstorm Warning	TBW	Polk	29 min
Jul 12, 7:01 PM EDT	Special Weather Statement	TBW	Polk	44 min
Jul 12, 7:48 PM EDT	Special Weather Statement	TBW	Pasco	42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2016 Every severe thunderstorm warning in 2016

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.