Alert archive / Florida / Special Weather Statements in 2016
Special Weather Statement, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this special weather statement at Aug 23, 2016, 5:52 PM EDT for Polk County, Florida. It was in force for 38 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
- Aug 23, 2016, 5:52 PM EDT (21:52 UTC)
- Expired
- Aug 23, 2016, 6:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Tampa Bay, FL
County Polk County, FL
The radar
The Tampa radar (KTBW), 70 km from the middle of the area, began a volume at 21:51 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, 9.9 hours before the alert went out and 70 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
- 1805 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 998 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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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 Aug 23, 3:57 PM EDT, 1 hour 55 minutes earlier.
Area forecast discussion, Aug 23, 3:57 PM EDT, 1 hour 55 minutes before
Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 357 PM EDT TUE AUG 23 2016 .SHORT TERM (Tonight-Wednesday)... Pattern is continuing to transition to northeast to east flow with deeper moisture moving into the area. Scattered showers and thunderstorms have developed and are moving southwest across the Nature Coast and expect to see this convection develop southward along the coastal counties later this afternoon and evening as the east coast sea breeze moves westward. Unlike the last few days the convection will move west out into the gulf during this evening with partly cloudy skies overnight. For Wednesday the northeast to east flow will be well established and an area of deep moisture, precipitable water over 2 inches, will be moving quickly west during the day. Therefore, expect to see scattered convection moving into our interior counties by midday and spreading west during the afternoon before moving out into the gulf during the evening. The northeast to east flow will be strong enough to keep the west coast sea breeze close to the coast and have depicted the highest PoPs of 50 to 60 percent near the coast south of Tampa Bay where moisture is deepest and a late day sea breeze collision is expected. Temperatures tonight will be mostly in the 70s while highs on Wednesday will not be quite as warm thanks to the expected earlier development of the convection and range from near 90 along the coast to the lower 90s inland. .MID TERM/LONG TERM (Wednesday Night through next Tuesday)... Broad upper level ridging has set up over the southeast U.S. for the start of the long term period. This pattern will persist through the beginning of next week when the ridge shifts slightly northward as a tropical wave (Invest 99L) approaches the region. On the surface, strong high pressure off the mid-Atlantic coast ridges southwest over the southeast U.S. This pattern persists through the beginning of next week as well. An east- northeast wind flow will continue through the entire period. As for rain chances, a typical summertime pattern can be expected with 40-60 PoPs during the late afternoon with storms moving from east to west and then out over the coastal waters during the evening hours. Temperatures will remain seasonal during the period with daytime highs in the upper 80s near the coast and low 90s inland. Overnight lows will be in the mid 70s through the period. The only major concern for the long term period will be with a tropical wave (Invest 99L) that is located east of the Leeward Islands. The National Hurricane Center currently holds it at 60 percent chance of development over the next 5 days. Model guidance is showing significant deviation in location and intensity out through Monday. ECMWF is the more aggressive model bringing in a significant tropical system to southeast Florida and crossing the peninsula early Monday morning. The hurricane hunters currently have a plane on station investigating 99L and is scheduled to fly again on Wednesday. This data will be very valuable in determining any development of this system over the coming days. We are still 5 days out, so there can still be some significant changes between now and then, so we will be closely monitoring this system over the coming days. For the latest information on this system please consult the latest Tropical Weather Outlooks issued by the National Hurricane Center in Miami. && .AVIATION... Scattered convection could cause some brief MVFR/local IFR conditions at the TAF sites into this evening, otherwise, mainly VFR conditions are expected to prevail through Wednesday morning. && .MARINE... The northeast to east flow will persist through the week with wind speeds increasing to near Small Craft Exercise Caution criteria with the nocturnal surges Wednesday night and Thursday night. Otherwise, the main hazard will continue to be isolated to scattered convection that moves off the coast during mainly the late afternoon and evening hours which could cause some locally higher winds and seas. && .FIRE WEATHER... The warm moist airmass will continue across the region with daily chances for showers and thunderstorms. This will keep relative humidity values well above critical levels with no fire weather concerns expected for the next several days. && .Preliminary Point Temps/PoPs... TPA 77 91 77 92 / 40 40 10 50 FMY 77 91 77 92 / 20 60 20 60 GIF 76 91 75 92 / 10 40 10 50 SRQ 77 92 77 92 / 40 50 20 50 BKV 75 92 74 92 / 30 30 10 40 SPG 79 89 80 92 / 40 50 10 50 && .TBW Watches/Warnings/Advisories... FL...None. Gulf waters...None. && SHORT TERM/AVIATION/MARINE/FIRE WEATHER...69/Close MID TERM/LONG TERM/DECISION SUPPORT...74/Wynn
Hazardous weather outlook, Aug 23, 4:56 AM EDT, 12 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 456 AM EDT TUE AUG 23 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- 873-876-240900- 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- 456 AM EDT TUE AUG 23 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED MAINLY IN THE AFTERNOON AND EVENING. THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING STRONG GUSTY WINDS...LOCALLY HEAVY RAINS...AND FREQUENT DEADLY LIGHTNING STRIKES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. ...THUNDERSTORM IMPACT... SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED EACH DAY. THUNDERSTORMS WILL BE CAPABLE OF PRODUCING STRONG GUSTY WINDS...LOCALLY HEAVY RAINS...AND FREQUENT DEADLY LIGHTNING STRIKES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. MCKAUGHAN
In the hours before
Special weather statement, Aug 23, 2:59 PM EDT, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL 259 PM EDT TUE AUG 23 2016 FLZ043-242-248-231945- INLAND HERNANDO-INLAND CITRUS-SUMTER- 259 PM EDT TUE AUG 23 2016 ...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN SUMTER... NORTH CENTRAL HERNANDO AND SOUTHEASTERN CITRUS COUNTIES... AT 258 PM EDT...STRONG THUNDERSTORMS WERE CLUSTERED NEAR INVERNESS AIRPORT...OR 7 MILES EAST OF INVERNESS...MOVING SOUTHWEST AT 10 MPH. WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... INVERNESS...INVERNESS HIGHLANDS NORTH...INVERNESS HIGHLANDS SOUTH... INVERNESS AIRPORT...LAKE PANASOFFKEE...COLEMAN... INVERNESS HIGHLANDS...WAHOO...RUTLAND...GOSPEL ISLAND...NOBLETON... HEATHERWOOD...WITHLAPOPKA ISLE...ISTACHATTA...FLORAL CITY...CROOM... SUBURBAN ACRES...SUMTERVILLE...LECANTO AND CITRUS HILLS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. LAT...LON 2894 8221 2876 8204 2855 8227 2885 8249 TIME...MOT...LOC 1858Z 050DEG 7KT 2883 8222
Special weather statement, Aug 23, 5:40 PM EDT, 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL 540 PM EDT TUE AUG 23 2016 FLZ151-232230- COASTAL HILLSBOROUGH FL- 540 PM EDT TUE AUG 23 2016 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HILLSBOROUGH COUNTY UNTIL 630 PM EDT... AT 540 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR MACDILL AIR FORCE BASE...OR NEAR TAMPA...MOVING SOUTH AT 25 MPH. WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... TAMPA...PALM RIVER-CLAIR MEL...MACDILL AIR FORCE BASE... TOWN 'N' COUNTRY...GANDY...DAVIS ISLANDS...UNIVERSITY OF TAMPA... PETER O KNIGHT AIRPORT...CHANNELSIDE...PALM RIVER... SOUTH TAMPA AND SOHO. 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 2798 8257 2794 8237 2781 8246 2778 8258 TIME...MOT...LOC 2140Z 011DEG 20KT 2789 8249
Special weather statement, Aug 23, 5:52 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
552 PM EDT TUE AUG 23 2016
FLZ052-232230-
POLK-
552 PM EDT TUE AUG 23 2016
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN POLK
COUNTY...
AT 551 PM EDT...STRONG THUNDERSTORMS WERE CLUSTERED 12 MILES NORTH
OF COMBEE SETTLEMENT...OR 13 MILES NORTH OF LAKELAND...MOVING
SOUTHWEST AT 15 MPH.
WINDS IN EXCESS OF 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
LAKELAND...POLK CITY...WINSTON...ROCKRIDGE...KATHLEEN AND GIBSONIA.
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 2800 8205 2817 8206 2817 8211 2826 8211
2826 8206 2830 8205 2832 8200 2831 8199
2831 8196 2834 8196 2835 8193 2820 8181
TIME...MOT...LOC 2151Z 055DEG 11KT 2824 8194The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 2:59 PM EDT | Special Weather Statement | TBW | Sumter | 46 min |
| Aug 23, 5:40 PM EDT | Special Weather Statement | TBW | Hillsborough | 50 min |
| Aug 23, 5:44 PM EDT | Special Marine Warning | TBW | 31 min | |
| Aug 23, 6:05 PM EDT | Special Weather Statement | TBW | Pinellas | 40 min |
| Aug 23, 6:11 PM EDT | Severe Thunderstorm Warning | TBW | Pinellas | 34 min |
| Aug 23, 6:30 PM EDT | Special Weather Statement | TBW | Hillsborough | 45 min |
| Aug 23, 6:47 PM EDT | Special Weather Statement | TBW | Manatee | 43 min |
| Aug 23, 7:10 PM EDT | Special Weather Statement | TBW | Hillsborough | 50 min |
Nearby
Special Weather Statements in Florida, 2016Every special weather statement 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.