Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Tampa Bay, FL

September 9, 2012Hillsborough County, Florida

NWS Tampa Bay, FL issued this special weather statement at Sep 9, 2012, 9:49 AM EDT for Hillsborough County, Florida. It was in force for 41 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: Sep 9, 2012, 9:49 AM EDT (13:49 UTC)
Expired: Sep 9, 2012, 10:30 AM EDT
In force: 41 min
Issued by: NWS Tampa Bay, FL

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 13 km from the middle of the area, began a volume at 13:48 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 1.8 hours before the alert went out and 198 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: 26 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Sep 9, 9:14 AM EDT, 35 minutes earlier.

Area forecast discussion, Sep 9, 9:14 AM EDT, 35 minutes before

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Hazardous weather outlook, Sep 9, 5:37 AM EDT, 4 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
537 AM EDT SUN SEP 9 2012

FLZ039-042-043-048>052-055>057-060>062-065-101000-
LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK-
MANATEE-HARDEE-HIGHLANDS-SARASOTA-DESOTO-CHARLOTTE-LEE-
537 AM EDT SUN SEP 9 2012

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

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED TODAY AND
TONIGHT. A FEW STORMS COULD BECOME STRONG...WITH THE MAIN HAZARDS
BEING GUSTY WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING...AND HEAVY
RAINFALL CAPABLE OF PRODUCING MINOR FLOODING OF LOW LYING AND
POOR DRAINAGE AREAS.

...RIP CURRENT IMPACT...
ONSHORE WINDS AND ELEVATED SEAS WILL RESULT IN A MODERATE RISK FOR
RIP CURRENTS AT AREA BEACHES TODAY.

...WIND AND SEA IMPACT...
ELEVATED WINDS IN ADVANCE OF A COLD FRONT WILL MAKE FOR SOMEWHAT
ROUGH BOATING CONDITIONS FOR GULF...BAY...AND INLAND WATERS TODAY.
SMALL CRAFT SHOULD EXERCISE CAUTION.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

...THUNDERSTORM IMPACT...
ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH
DAY...PRIMARILY DURING THE AFTERNOON HOURS. A FEW STORMS COULD
BECOME STRONG...WITH THE MAIN HAZARDS BEING GUSTY WINDS AND
DANGEROUS CLOUD TO GROUND LIGHTNING.

...WIND AND SEA IMPACT...
ELEVATED EASTERLY WINDS ARE EXPECTED TO DEVELOP MONDAY NIGHT AND
CONTINUE THROUGH MUCH OF THE UPCOMING WORK WEEK AS HIGH PRESSURE
BUILDS NORTH OF THE REGION. WINDS MAY REACH CAUTIONARY OR ADVISORY
LEVELS AT TIMES MONDAY NIGHT THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD MONITOR THE WEATHER AND SELF ACTIVATE IF NEEDED.

JELSEMA

In the hours before

Special weather statement, Sep 9, 6:30 AM EDT, 3 hours 19 minutes before

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Special weather statement, Sep 9, 6:39 AM EDT, 3 hours 10 minutes before

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Special weather statement, Sep 9, 7:17 AM EDT, 2 hours 32 minutes before

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Special weather statement, Sep 9, 8:14 AM EDT, 1 hour 35 minutes before

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Special weather statement, Sep 9, 8:57 AM EDT, 52 minutes before

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Special weather statement, Sep 9, 9:49 AM EDT, 0 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
Sep 9, 2:26 AM EDT	Special Weather Statement	TBW	Levy	64 min
Sep 9, 3:44 AM EDT	Special Marine Warning	TBW		61 min
Sep 9, 6:11 AM EDT	Special Weather Statement	TBW	Hernando, Sumter	49 min
Sep 9, 6:30 AM EDT	Special Weather Statement	TBW	Pinellas	45 min
Sep 9, 6:39 AM EDT	Special Weather Statement	TBW	Highlands	51 min
Sep 9, 7:17 AM EDT	Special Weather Statement	TBW	Hillsborough	43 min
Sep 9, 8:14 AM EDT	Special Weather Statement	TBW	Hillsborough	46 min
Sep 9, 8:57 AM EDT	Special Weather Statement	TBW	Polk	48 min
Sep 9, 10:26 AM EDT	Special Weather Statement	TBW	Hillsborough	49 min
Sep 9, 1:22 PM EDT	Special Weather Statement	TBW	Manatee	38 min
Sep 9, 6:06 PM EDT	River Flood Warning	TBW	Hillsborough	4 hr

Nearby

Special Weather Statements in Florida, 2012 Every special weather statement in 2012

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.