Alert archive / Florida / High Surf Advisories in 2016

High Surf Advisory 8, NWS Tampa Bay, FL

August 31, 20166 counties in Florida

NWS Tampa Bay, FL issued this high surf advisory at Aug 31, 2016, 7:53 PM EDT for 6 counties in Florida. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued: Aug 31, 2016, 7:53 PM EDT (23:53 UTC)
Expired: Sep 2, 2016, 8:00 PM EDT
In force: 48 hr
Issued by: NWS Tampa Bay, FL

Counties Charlotte County, FL, Hillsborough County, FL, Lee County, FL, Manatee County, FL, Pinellas County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 44 km from the middle of the area, began a volume at 23:53 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

Tampa Bay, FL (KTBW), launched 12:00Z, 11.9 hours before the alert went out and 43 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: 186 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 68 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 high surf advisory 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 high surf advisory went out at Aug 31, 5:35 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Aug 31, 5:35 PM EDT, 2 hours 18 minutes before

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Hazardous weather outlook, Aug 31, 5:22 AM EDT, 14 hours 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
522 AM EDT WED AUG 31 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-
873-876-311630-
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-
522 AM EDT WED AUG 31 2016

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

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
COPIOUS AMOUNTS OF TROPICAL MOISTURE STREAMING INTO THE REGION
WILL SUPPORT WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS OVER
THE REGION TODAY AND TONIGHT. THUNDERSTORMS WILL BE CAPABLE OF
PRODUCING VERY HEAVY DOWNPOURS...DEADLY LIGHTNING STRIKES AND
STRONG GUSTY WINDS AS THE STORMS MOVE TO THE NORTH AND NORTHEAST
AROUND 20 MPH. REMEMBER IF LIGHTNING IS OBSERVED OR THUNDER IS
HEARD MOVE INDOORS IMMEDIATELY.

...FLOOD IMPACT...
LOCALLY HEAVY RAINFALL WILL BE POSSIBLE TODAY AND TONIGHT
ESPECIALLY WHERE THE TRAINING OF STORMS OCCUR OVER THE
SAME AREA. RAINFALL AMOUNTS OF 2 TO 3 INCHES OVER A SHORT
PERIOD OF TIME WILL BE POSSIBLE WHICH WILL PRODUCE FLOODING
OF LOW LYING AND POOR DRAINAGE AREAS AS WELL AS THE PONDING
OF WATER ON ROADWAYS. MOTORISTS SHOULD SLOW DOWN AND EXERCISE
EXTREME CAUTION IF ENCOUNTERING HEAVY RAIN TODAY AND TONIGHT.

...RIP CURRENT IMPACT...
AN INCREASING SOUTH TO SOUTHWEST WIND FLOW ALONG WITH
BUILDING SEAS AND INCREASING SURF WILL CREATE A HIGH RISK
OF RIP CURRENTS ALONG AREA BEACHES THROUGH TONIGHT.

TO AVOID GETTING CAUGHT IN A RIP CURRENT...SWIM AT GUARDED BEACHES
AND HEED THE ADVICE OF THE BEACH PATROL.  AT UNGUARDED BEACHES AND
NEAR PIERS...JETTIES...AND INLETS...DO NOT GO INTO THE SURF MUCH
ABOVE YOUR KNEES.

...MARINE IMPACTS...
SOUTH TO SOUTHWEST WINDS INCREASING TO AROUND 20 KNOTS WITH
HIGHER GUSTS IN THE VICINITY OF THUNDERSTORMS COMBINED WITH
BUILDING SEAS WILL CREATE HAZARDOUS BOATING CONDITIONS FOR SMALL
CRAFT OPERATORS AND SMALL CRAFT ADVISORY HEADLINES HAVE BEEN
POSTED FOR THE NEAR AND OFFSHORE WATERS FROM TARPON SPRINGS SOUTH
TO BONITA BEACH OUT 60 NM WHICH INCLUDES THE TAMPA BAY AND
CHARLOTTE HARBOR WATERS THROUGH TONIGHT. FISHERMEN AND OTHER
SMALL CRAFT OPERATORS MAY WANT TO POSTPONE TRIPS INTO THE GULF
UNTIL CONDITIONS IMPROVE.

...WATERSPOUT IMPACT...
INCREASING WIND SHEAR WITHIN THE ATMOSPHERE WILL BRING AN
INCREASED RISK FOR WATERSPOUTS OVER THE ADJACENT GULF WATERS
LATE TONIGHT THROUGH THURSDAY.

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

TROPICAL DEPRESSION NINE LOCATED OVER THE SOUTHEASTERN GULF
OF MEXICO EARLY THIS MORNING IS FORECAST TO MOVE NORTH AND
INTENSIFY INTO A TROPICAL STORM LATER TODAY. THIS SYSTEM IS THEN
FORECAST TO MOVE TO NORTHEASTWARD OVER THE EASTERN GULF OF MEXICO
TONIGHT AND THURSDAY BEFORE MOVING ONSHORE AND ACROSS THE
NORTHERN FLORIDA PENINSULA THURSDAY NIGHT. COPIOUS AMOUNTS
OF TROPICAL MOISTURE ASSOCIATED WITH THIS SYSTEM WILL SUPPORT
WIDESPREAD HEAVY RAINS AND SQUALLS OVER THE REGION ON THURSDAY
ESPECIALLY ALONG COASTAL LOCATIONS FROM TAMPA NORTH INTO THE
NATURE COAST WHERE AN INCREASED THREAT OF FLOODING WILL EXIST AS
BANDS OF HEAVY RAIN AND STORMS MOVE OVER THE REGION. AT THE
PRESENT TIME WIDESPREAD RAINFALL AMOUNTS OF 4 TO 6 INCHES WILL
BE POSSIBLE OVER INTERIOR SECTIONS OF WEST CENTRAL FLORIDA TODAY
THROUGH SATURDAY...WITH 6 TO 10 INCH AMOUNTS POSSIBLE ALONG
COASTAL LOCATIONS FROM SAINT PETERSBURG NORTH TO CEDAR KEY.

IN ADDITION TO THE HEAVY RAIN AND FLOODING THREAT INCREASING WIND
SHEAR WITHIN THE ATMOSPHERE WILL BRING AN INCREASED RISK OF
TORNADOES LATER TONIGHT THROUGH THURSDAY AS THE TROPICAL STORM
APPROACHES FLORIDA. THE INCREASING SOUTH TO SOUTHWEST WIND FLOW
WILL ALSO SUPPORT AN INCREASING STORM SURGE THREAT ALONG THE
COAST...WITH THE HIGHEST STORM SURGE LIKELY TO FOCUS ALONG THE
NATURE COAST FROM HOMOSASSA NORTH TO CEDAR KEY CLOSEST TO THE
TRACK OF THE STORM DURING LATER TONIGHT THROUGH THURSDAY.

INCREASING SOUTH TO SOUTHWEST WINDS WILL ALSO HELP TO BUILD SEAS
SIGNIFICANTLY OVER THE GULF WATERS...WHICH IN TURN WILL LEAD TO
VERY HAZARDOUS BOATING CONDITIONS FOR SMALL CRAFT OPERATORS. THE
BUILDING SURF AND WAVE ACTION ALONG AREA BEACHES WILL SUPPORT A
HIGH RISK OF RIP CURRENTS ALONG AREA BEACHES THROUGH THURSDAY. ALL
RESIDENT...VISITORS AND MARINERS IN WEST CENTRAL AND SOUTHWEST
FLORIDA SHOULD CONTINUE TO MONITOR THE PROGRESS OF THIS SYSTEM.
FOR ADDITIONAL INFORMATION SEE THE LATEST ADVISORIES BEING ISSUED
BY THE NATIONAL HURRICANE CENTER IN MIAMI.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED.

MCMICHAEL

In the hours before

Special weather statement, Aug 31, 3:08 PM EDT, 4 hours 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
308 PM EDT WED AUG 31 2016

FLZ151-155-160-251-255-311945-
COASTAL SARASOTA FL-COASTAL MANATEE FL-INLAND HILLSBOROUGH FL-
COASTAL HILLSBOROUGH FL-INLAND MANATEE FL-
308 PM EDT WED AUG 31 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HILLSBOROUGH...
NORTHWESTERN SARASOTA AND NORTHWESTERN MANATEE COUNTIES UNTIL 345 PM
EDT...

AT 307 PM EDT...DOPPLER RADAR WAS TRACKING AN AREA OF STRONG
THUNDERSTORMS NEAR SAINT ARMANDS KEY...OR NEAR SARASOTA...MOVING
NORTH AT 40 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SARASOTA...BRADENTON...PALMETTO...ANNA MARIA...RIDGE WOOD HEIGHTS...
KENSINGTON PARK...SAINT ARMANDS KEY...SARASOTA BRADENTON AIRPORT...
PARRISH...NORTH SARASOTA...WEST BRADENTON...SOUTH GATE RIDGE...
MEMPHIS...ELLENTON...SOUTHGATE...RUSKIN...SARASOTA SPRINGS...
GULF GATE ESTATES...SOUTH BRADENTON AND THE MEADOWS.

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 2766 8264 2779 8256 2772 8238 2772 8239
      2769 8242 2767 8243 2767 8241 2765 8246
      2765 8239 2718 8249 2731 8268 2740 8273
      2753 8276
TIME...MOT...LOC 1907Z 188DEG 35KT 2735 8264

AUSTIN

Special weather statement, Aug 31, 4:17 PM EDT, 3 hours 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Hillsborough	8 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Hillsborough	7 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Pasco	7 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Pasco	17 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Manatee	4 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	Hardee	4 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	DeSoto	13 days
Aug 30, 10:02 PM EDT	River Flood Warning	TBW	DeSoto	4 days
Aug 31, 3:15 AM EDT	Flood Watch	TBW	Citrus, Hernando, Hillsborough, Levy, Manatee, Pasco and 3 more	56 hr
Aug 31, 5:14 AM EDT	Special Weather Statement	TBW	Pinellas	31 min
Aug 31, 5:59 AM EDT	Tropical Storm Warning	TBW	Citrus, Hernando, Hillsborough, Levy, Pasco	54 hr
Aug 31, 6:56 AM EDT	Areal Flood Advisory	TBW	Pinellas	2 hr
Aug 31, 9:08 AM EDT	Areal Flood Advisory	TBW	Pinellas	112 min
Aug 31, 11:38 AM EDT	Special Weather Statement	TBW	Manatee	37 min
Aug 31, 11:41 AM EDT	Special Marine Warning	TBW		34 min
Aug 31, 11:49 AM EDT	River Flood Warning	TBW	Hillsborough	35 hr
Aug 31, 12:21 PM EDT	Areal Flood Advisory	TBW	Pinellas	114 min
Aug 31, 12:56 PM EDT	Special Marine Warning	TBW		34 min
Aug 31, 2:13 PM EDT	Areal Flood Advisory	TBW	Hillsborough, Manatee, Pinellas	3 hr
Aug 31, 3:06 PM EDT	Special Marine Warning	TBW		24 min
Aug 31, 3:08 PM EDT	Special Weather Statement	TBW	Manatee	37 min
Aug 31, 4:17 PM EDT	Special Weather Statement	TBW	Charlotte	28 min
Aug 31, 5:17 PM EDT	Areal Flood Advisory	TBW	Hillsborough, Manatee, Pinellas, Sarasota	3 hr
Aug 31, 6:02 PM EDT	Special Marine Warning	TBW		58 min
Aug 31, 7:53 PM EDT	Rip Current Statement	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	48 hr
Aug 31, 7:58 PM EDT	Special Marine Warning	TBW		47 min

Nearby

High Surf Advisories in Florida, 2016 Every high surf advisory 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.