Alert archive / Florida / High Surf Advisories in 2007
High Surf Advisory 3, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this high surf advisory at Apr 15, 2007, 4:42 AM EDT for Pinellas County, Florida. It took effect at Apr 15, 2007, 8:00 AM EDT. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2007, 4:42 AM EDT (08:42 UTC)
- In effect from
- Apr 15, 2007, 8:00 AM EDT
- Expired
- Apr 16, 2007, 4:00 PM EDT
- In force
- 32 hr
- Issued by
- NWS Tampa Bay, FL
County Pinellas County, FL
The radar
The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 08:42 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 00:00Z, 8.7 hours before the alert went out and 306 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
- 344 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1113 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
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 Apr 15, 2:30 AM EDT, 2 hours 12 minutes earlier.
Area forecast discussion, Apr 15, 2:30 AM EDT, 2 hours 12 minutes before
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</html>Hazardous weather outlook, Apr 14, 5:39 AM EDT, 23 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 539 AM EDT SAT APR 14 2007 FLZ039-042-043-048>052-055>057-060>062-065-141500- LEVY-CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-HILLSBOROUGH-POLK- MANATEE-HARDEE-HIGHLANDS-SARASOTA-DE SOTO-CHARLOTTE-LEE- 539 AM EDT SAT APR 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... A STRONG COLD FRONT WILL MOVE THROUGH THE AREA OVERNIGHT AND INTO SUNDAY MORNING. A SQUALL LINE WILL DEVELOP AHEAD OF THE FRONT PUSHING STRONG TO SEVERE THUNDERSTORMS THROUGH THE NATURE COAST AFTER MIDNIGHT...THEN THROUGH THE TAMPA BAY AREA AROUND SUNRISE...AND THE SOUTH THROUGH MID SUNDAY MORNING. DAMAGING WINDS AND LIGHTNING WILL BE THE MAIN HAZARDS WITH ISOLATED TORNADOES ALSO POSSIBLE. ...WIND AND SEA IMPACT... WINDS WILL INCREASE TO 15 TO 20 KNOTS NEAR SHORE AND AROUND 20 KNOTS WITH HIGHER GUSTS OFFSHORE THIS MORNING ON THE COASTAL WATERS. WINDS WILL CONTINUE TO INCREASE THROUGH THE DAY...WITH ADVISORY CONDITIONS EXPECTED ACROSS THE COASTAL WATERS BY THIS EVENING. SEAS WILL BUILD UP TO 8 FEET OFFSHORE BY TONIGHT. MARINERS OF SMALL CRAFT SHOULD POSTPONE TRIPS THIS WEEKEND. ...COASTAL FLOOD IMPACT... STRONG ONSHORE WINDS WILL ALLOW WATER TO PILE UP ALONG THE COAST...POSSIBLY CAUSING WATER LEVELS TO RISE 1 TO 3 FEET ABOVE NORMAL TIDE. MINOR COASTAL FLOODING MAY OCCUR DURING HIGH TIDE EARLY SUNDAY MORNING MAINLY ALONG THE NATURE COAST. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE COLD FRONT WILL CONTINUE PUSHING THROUGH THE AREA THROUGH MID-DAY SUNDAY. HIGH PRESSURE WILL BUILD ACROSS THE AREA BEHIND THE FRONT. WINDS SUNDAY WILL INCREASE TO 15 TO 25 MPH WITH HIGHER GUSTS ON LAND AND 20 TO 30 KNOTS WITH HIGHER GUSTS OVER THE COASTAL WATERS. SEAS WILL BUILD UP TO 11 FEET OFFSHORE. THE HIGH ONSHORE WINDS WILL CAUSE A HIGH RISK FOR RIP CURRENTS AND CREATE ROUGH AND DANGEROUS HIGH SURF CONDITIONS THROUGH EARLY MONDAY. DRIER AND COOLER AIR WILL MOVE INTO THE AREA MONDAY CAUSING CRITICALLY LOW HUMIDITIES ACROSS THE AREA MONDAY AFTERNOON. ANOTHER COLD FRONT IS EXPECTED TO MOVE THROUGH THE AREA WEDNESDAY BRINGING ANOTHER ROUND OF THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS SHOULD MONITOR THE WEATHER. FORMAL ACTIVATION MAY BE NEEDED. COLSON
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 5:30 AM EDT | Special Marine Warning | TBW | 90 min | |
| Apr 15, 7:14 AM EDT | Special Marine Warning | TBW | 91 min | |
| Apr 15, 8:39 AM EDT | Special Marine Warning | TBW | 51 min | |
| Apr 15, 8:56 AM EDT | Tornado Warning | TBW | Hernando, Pasco | 34 min |
| Apr 15, 9:29 AM EDT | Tornado Warning | TBW | Hernando, Pasco, Sumter | 31 min |
| Apr 15, 9:30 AM EDT | Special Marine Warning | TBW | 60 min | |
| Apr 15, 10:02 AM EDT | Severe Thunderstorm Warning | TBW | Manatee | 28 min |
| Apr 15, 10:30 AM EDT | Special Marine Warning | TBW | 90 min | |
| Apr 15, 10:45 AM EDT | Severe Thunderstorm Warning | TBW | Polk | 45 min |
| Apr 15, 1:30 PM EDT | Special Marine Warning | TBW | 30 min | |
| Apr 15, 1:56 PM EDT | Red Flag Warning | TBW | DeSoto, Hardee, Highlands, Pinellas, Polk, Sumter | 29 hr |
Nearby
High Surf Advisories in Florida, 2007Every high surf advisory in 2007
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.