Alert archive / Florida / Special Weather Statements in 2012
Special Weather Statement, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this special weather statement at Jul 17, 2012, 2:17 PM EDT for Hillsborough County, Florida. It was in force for 28 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 17, 2012, 2:17 PM EDT (18:17 UTC)
- Expired
- Jul 17, 2012, 2:45 PM EDT
- In force
- 28 min
- Issued by
- NWS Tampa Bay, FL
County Hillsborough County, FL
The radar
The Tampa radar (KTBW), 48 km from the middle of the area, began a volume at 18:20 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
Jacksonville, FL (KJAX), launched 12:00Z, 6.3 hours before the alert went out and 270 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.
- Mixed-layer CAPE
- 1223 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 836 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 Jul 17, 1:52 PM EDT, 25 minutes earlier.
Area forecast discussion, Jul 17, 1:52 PM EDT, 25 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 152 PM EDT TUE JUL 17 2012 .SHORT TERM (TONIGHT-THURSDAY)... SCATTERED TO NUMEROUS THUNDERSTORMS ARE IN PLACE ACROSS THE AREA WITH MORE CONVECTION DEVELOPING ACROSS LAND AREAS. THE FOCUS SHOULD SHIFT INLAND THROUGH THE AFTERNOON AND EVENING...WITH SOME REDEVELOPMENT OVER THE COASTAL WATERS AFTER MIDNIGHT. WEDNESDAY SHOULD BE MORE OF A TRANSITION DAY AS THE UPPER LOW MOVES OFF AND MODERATES...AND MORE STACKED RIDGING BUILDS ACROSS THE SOUTHERN HALF OF THE PENINSULA. WILL SEE SCATTERED THUNDERSTORMS WEDNESDAY AFTERNOON WITH THE BEST CHANCES INLAND. SOUTH TO SW FLOW WILL BE IN PLACE FOR THURSDAY WITH THE STACKED RIDGING REMAINING OVER THE SOUTHERN PENINSULA. SCATTERED STORMS WILL BE POSSIBLE WITH THE BEST CHANCE INLAND FOR THURSDAY. TEMPERATURES WILL BE IN THE UPPER 80S TO LOWER 90S FOR HIGHS AND LOWS WILL BE AROUND 70 NORTH AND INLAND TO THE MID TO UPPER 70S NEAR THE COAST EACH DAY. .LONG TERM (THURSDAY NIGHT-TUESDAY)... SUB-TROPICAL RIDGE WILL BE WELL ESTABLISHED OVER THE REGION THURSDAY NIGHT AND FRIDAY WITH SLUG OF DRY AIR LIFTING NORTHWARD ACROSS THE REGION. WILL CONTINUE WITH JUST A SLIGHT CHANCE OF AFTERNOON STORMS WHICH IS AT OR ABOVE 00Z MEX GUIDANCE POPS WHICH SHOW POPS BELOW 15 PERCENT SOUTH OF TAMPA BAY. THE TRICKY PART OF THE FORECAST WILL BE IN THE RETURN OF MOISTURE FROM THE SOUTH. THE SUB-TROPICAL RIDGE REMAINS STRONG OVER CENTRAL FLORIDA WHICH WILL SERVE TO SUPPRESS AFTERNOON STORMS. BUT ITS HARD TO IGNORE PRECIPITABLE WATERS OF OVER TWO INCHES AS WELL. DRY SLOT ON SATURDAY IS FORECAST TO BE IN PLACE FROM THE TAMPA BAY AREA NORTHWARD THROUGH PORTIONS OF THE NATURE COAST. OTHERWISE...HIGHER MOISTURE WARRANTS AT LEAST A CHANCE OF AFTERNOON STORMS WITH RAIN CHANCES NEAR 30 PERCENT AROUND FORT MYERS. DECIDED TO STAY A BIT ABOVE GUIDANCE FOR RAIN CHANCES ON SUNDAY THROUGH TUESDAY. THE STORY REMAINS THE SAME...HIGH MOISTURE AVAILABILITY WILL BE OFFSET BY SUBSIDENCE UNDER THE STRONG SUB- TROPICAL RIDGE. WILL KEEP AFTERNOON RAIN CHANCES AROUND 40 PERCENT...WHICH IS A BIT ABOVE GUIDANCE BUT NEAR OR EVEN A BIT BELOW NORMAL FOR THIS TIME OF YEAR. WITH THE STRONG SUB-TROPICAL RIDGE OVERHEAD...TEMPERATURES WILL SOAR GIVEN ENOUGH SUNSHINE...ESPECIALLY AWAY FROM THE INFLUENCE OF THE SEA BREEZES. I WOULD NOT BE SURPRISED TO SEE SOME UPPER 90S ACROSS THE INTERIOR OVER THE WEEKEND. && .AVIATION... SCATTERED SHOWERS/STORMS WILL RESULT IN TEMPORARY CIGS/VSBY RESTRICTIONS AT MOST TERMINALS THIS AFTERNOON...BUT SHOULD SEE ACTIVITY DIMINISH BY LATE AFTERNOON/EARLY EVENING AS IT SHIFTS TOWARD THE EAST COAST OF FLORIDA. SOUTHWESTERLY FLOW SHOULD ALLOW FOR SOME SHOWER DEVELOPMENT OVER THE GULF AFTER MIDNIGHT...AND HAVE INDICATED VCSH AT NORTHERN TERMINALS WHERE SURFACE SPEED CONVERGENCE AND DEEP LAYER MOISTURE WILL BE MORE FAVORABLE FOR SHOWERS TO PUSH ONSHORE. EXPECT SHOWER/STORM DEVELOPMENT AGAIN ON WEDNESDAY...WITH HIGHER PROBABILITIES ACROSS NORTHERN TAF SITES. && .MARINE... HIGH PRESSURE WILL BE RIDGING ACROSS THE WATERS FROM THE ATLANTIC THROUGH THE PERIOD. THE RIDGE AXIS WILL BE ACROSS SOUTH FLORIDA THROUGH MID-WEEK AND THEN BEGIN TO LIFT TO OVER THE CENTRAL WATERS/CENTRAL PENINSULA THROUGH THE END OF THE WEEK. WINDS AND SEAS WILL REMAIN LIGHT THROUGH THE PERIOD WITH S/SW FLOW SHIFTING TO THE S/SE. AFTERNOON SEA BREEZES WILL TURN WINDS ONSHORE EACH DAY NEAR THE COAST AND SCATTERED THUNDERSTORMS WILL BE POSSIBLE. && .FIRE WEATHER... NO CONCERNS. && .PRELIMINARY POINT TEMPS/POPS... TPA 76 90 77 92 / 30 40 20 20 FMY 74 90 76 94 / 30 30 20 20 GIF 73 92 75 94 / 30 50 20 30 SRQ 75 89 76 91 / 30 40 20 20 BKV 70 91 71 93 / 30 50 20 20 SPG 78 88 79 90 / 30 40 20 20 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...NONE. GULF WATERS...NONE. && SHORT TERM/MARINE/FIRE WEATHER...24/COLSON LONG TERM...JILLSON AVIATION...21/JELSEMA
Hazardous weather outlook, Jul 17, 5:22 AM EDT, 8 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 522 AM EDT TUE JUL 17 2012 FLZ039-042-043-048>052-055>057-060>062-065-GMZ830-850-853-856-870- 873-876-172130- LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK- MANATEE-HARDEE-HIGHLANDS-SARASOTA-DESOTO-CHARLOTTE-LEE- TAMPA BAY WATERS-TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM- ENGLEWOOD TO TARPON SPRINGS OUT 20 NM- BONITA BEACH TO ENGLEWOOD OUT 20 NM- TARPON SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM- ENGLEWOOD TO TARPON SPRINGS OUT 20 TO 60 NM- BONITA BEACH TO ENGLEWOOD OUT 20 TO 60 NM- 522 AM EDT TUE JUL 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... AN UNSTABLE AIRMASS WILL CONTINUE TO FAVOR SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS TODAY. THE STRONGEST STORMS SHOULD BE TO THE NORTH OF INTERSTATE FOUR WHERE THE BEST UPPER-LEVEL DYNAMICS EXIST. SOME STORMS WILL CONTAIN STRONG GUSTY WINDS AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. ...THUNDERSTORM IMPACT... DRIER AIR WILL BEGIN TO MOVE INTO THE REGION FROM THE SOUTH ON THURSDAY AND REMAIN WITH US ON FRIDAY. STILL...ENOUGH MOISTURE COMBINED WITH TEMPERATURES CLIMBING INTO THE MIDDLE 90S WILL ALLOW A FEW STORMS TO DEVELOP EACH AFTERNOON. SHOWER AND THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE OVER THE WEEKEND AS MOISTURE RETURNS. NO ORGANIZED AREAS OF STRONG TO SEVERE STORMS ARE EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. JILLSON
In the hours before
Special weather statement, Jul 17, 2:17 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 217 PM EDT TUE JUL 17 2012 FLZ049-051-171845- PASCO-HILLSBOROUGH- 217 PM EDT TUE JUL 17 2012 ...FUNNEL CLOUDS ARE POSSIBLE IN NORTHERN HILLSBOROUGH AND SOUTHERN PASCO COUNTIES... AT 216 PM EDT...THE PUBLIC REPORTED A FUNNEL CLOUD IN THONOTOSASSA AREA...NEAR U.S. 301 AND OHIO AV. DOPPLER RADAR SHOWED THE STORM MOVING NORTHEAST AT 10 MPH. THIS INCLUDES INTERSTATE 75 BETWEEN EXITS 260 AND 266. FUNNEL CLOUDS CAN BECOME BRIEF...SMALL...BUT DANGEROUS TORNADOES. MOVE INDOORS IMMEDIATELY...AND STAY AWAY FROM WINDOWS. && LAT...LON 2825 8225 2807 8210 2795 8234 2809 8246 TIME...MOT...LOC 1816Z 243DEG 8KT 2807 8235
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 10:31 PM EDT | Special Marine Warning | TBW | 59 min | |
| Jul 17, 3:18 AM EDT | Areal Flood Advisory | TBW | Pinellas | 87 min |
| Jul 17, 9:09 AM EDT | Areal Flood Advisory | TBW | Lee | 96 min |
| Jul 17, 2:22 PM EDT | Special Weather Statement | TBW | Pasco | 53 min |
| Jul 17, 2:43 PM EDT | Special Weather Statement | TBW | Polk | 47 min |
| Jul 17, 2:48 PM EDT | Areal Flood Advisory | TBW | Pasco | 57 min |
| Jul 17, 2:51 PM EDT | River Flood Warning | TBW | Pasco | 10 days |
| Jul 17, 3:32 PM EDT | Special Weather Statement | TBW | Polk | 43 min |
| Jul 17, 4:16 PM EDT | River Flood Warning | TBW | Manatee | 21 hr |
Nearby
Special Weather Statements in Florida, 2012Every 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.