Alert archive / Florida / Special Marine Warnings in 2017

Special Marine Warning 21, NWS Tampa Bay, FL

February 7, 2017

NWS Tampa Bay, FL issued this special marine warning at Feb 7, 2017, 11:04 PM EST. It was in force for 86 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
Feb 7, 2017, 11:04 PM EST (04:04 UTC)
Expired
Feb 8, 2017, 12:30 AM EST
In force
86 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Hail
0.0 in
Wind
34.0 mph

What forecasters said that day

The local office's own words before this special marine 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 special marine warning went out at Feb 7, 8:23 PM EST, 2 hours 41 minutes earlier.

Area forecast discussion, Feb 7, 8:23 PM EST, 2 hours 41 minutes before
Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
823 PM EST Tue Feb 7 2017

.FOR THE EVENING UPDATE...

...Severe thunderstorm watch in effect until midnight for
Levy county...

A strong U/L disturbance is moving across the southeast
U.S. with an associated line of strong/severe thunderstorms
currently approaching the big bend of Florida. 12Z TBW
sounding quite unstable for early February with CAPE around
1800 with significant dry air aloft which will aid
convective instability...leading to mid level evaporative
cooling which will create favorable conditions for damaging
downburst winds.

The line of thunderstorms will approach the northern nature
coast between 10 and 1030 PM with the potential for
damaging wind gusts with the stronger storms across Levy
county. The main U/L forcing will push across north Florida
around midnight...and away from the region overnight. The
line of storms will weaken rapidly as they sink slowly south
across the nature coast after midnight...and will begin to
dissipate as they approach the Tampa area.

South to southwest boundary layer flow continues to advect
very warm moist air over the coastal waters. Sea fog will
likely develop late tonight over the eastern Gulf of Mexico
which will advect locally onshore...with areas of dense fog
possibly developing late tonight/early Wednesday morning
across west central and southwest Florida.

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...None.
Gulf waters...None.
&&

UPDATE/AVIATION/MARINE...13/Oglesby
UPPER AIR...84/Austin
DECISION SUPPORT...84/Austin
Hazardous weather outlook, Feb 7, 5:06 AM EST, 17 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
506 AM EST TUE FEB 7 2017

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-
873-876-072215-
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-
506 AM EST TUE FEB 7 2017

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

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
THUNDERSTORMS ARE EXPECTED LATER THIS AFTERNOON PRIMARILY OVER THE
INTERIOR COUNTIES. THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF
PRODUCING STRONG GUSTY WINDS...LOCALLY HEAVY RAINS...AND FREQUENT
DEADLY LIGHTNING STRIKES.

...PATCHY DENSE FOG/SMOKE IMPACT...
VISIBILITIES WILL OCCASIONALLY BE REDUCED TO LESS THAN ONE
QUARTER MILE. IF DRIVING...SLOW DOWN...USE YOUR LOW BEAM
HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE BETWEEN YOU AND THE
VEHICLE IN FRONT OF YOU.

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

...THUNDERSTORM IMPACT...
THUNDERSTORMS ARE EXPECTED ON WEDNESDAY AND THURSDAY.
THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING STRONG
GUSTY WINDS...LOCALLY HEAVY RAINS...AND FREQUENT DEADLY LIGHTNING
STRIKES.

...PATCHY DENSE FOG/SMOKE IMPACT...
VISIBILITIES WILL OCCASIONALLY BE REDUCED TO LESS THAN ONE
QUARTER MILE. IF DRIVING...SLOW DOWN...USE YOUR LOW BEAM
HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE BETWEEN YOU AND THE
VEHICLE IN FRONT OF YOU.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

WYNN

In the hours before

Local storm report, Feb 7, 9:45 PM EST, 1 hour 19 minutes before
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Local storm report, Feb 7, 10:28 PM EST, 36 minutes before
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Special weather statement, Feb 7, 10:28 PM EST, 36 minutes before
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Local storm report, Feb 7, 10:56 PM EST, 8 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 7, 8:43 PM ESTSpecial Marine WarningTBW2 hr
Feb 7, 9:08 PM ESTSevere Thunderstorm WarningTBWLevy37 min
Feb 7, 9:40 PM ESTSevere Thunderstorm WarningTBWCitrus, Levy50 min
Feb 7, 10:13 PM ESTSpecial Marine WarningTBW62 min
Feb 7, 10:28 PM ESTSpecial Weather StatementTBWCitrus, Hernando, Pasco47 min
Feb 7, 11:15 PM ESTSpecial Weather StatementTBWHillsborough, Pasco, Pinellas, Sumter45 min
Feb 8, 12:43 AM ESTSpecial Weather StatementTBWPolk47 min

Nearby

Special Marine Warnings in Florida, 2017Every special marine warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.