Alert archive / Florida / Areal Flood Advisories in 2021
Areal Flood Advisory 2, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this areal flood advisory at Feb 13, 2021, 10:10 AM EST for Polk County, Florida. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Feb 13, 2021, 10:10 AM EST (15:10 UTC)
- Expired
- Feb 13, 2021, 11:11 AM EST
- In force
- 61 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
County Polk County, FL
The radar
The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 15:11 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, 3.2 hours before the alert went out and 74 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3261 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 238 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
What forecasters said that day
The local office's own words before this areal flood 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 areal flood advisory went out at Feb 13, 9:10 AM EST, 1 hour earlier.
Area forecast discussion, Feb 13, 9:10 AM EST, 1 hour before
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</html>Hazardous weather outlook, Feb 13, 5:01 AM EST, 5 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Tampa Bay Ruskin FL 501 AM EST Sat Feb 13 2021 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- 873-876-140000- 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- 501 AM EST Sat Feb 13 2021 This Hazardous Weather Outlook is for West Central And Southwest Florida. .DAY ONE...Today and Tonight. ...THUNDERSTORM IMPACT... A few thunderstorms are expected from later this afternoon into the evening hours. Thunderstorms that form will be capable of producing strong gusty winds...locally heavy rains...and frequent deadly lightning strikes. There is the possibility of a storm becoming strong to locally severe with the main threat being damaging wind gusts or a brief tornado or waterspout. ...DENSE SEA FOG... Visibilities will frequently be reduced to less than one quarter mile in dense sea fog over the gulf waters. .DAYS TWO THROUGH SEVEN...Sunday through Friday. ...THUNDERSTORM IMPACT... A few thunderstorms are expected on Sunday afternoon into the evening hours. Thunderstorms that form will be capable of producing strong gusty winds...locally heavy rains...and frequent deadly lightning strikes. There is the possibility of a storm becoming strong to locally severe with the main threat being damaging wind gusts or a brief tornado or waterspout. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. TBW
In the hours before
Special weather statement, Feb 13, 7:31 AM EST, 2 hours 39 minutes before
Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
731 AM EST Sat Feb 13 2021
FLZ050-151-131300-
Coastal Hillsborough FL-Pinellas FL-
731 AM EST Sat Feb 13 2021
...SIGNIFICANT WEATHER ADVISORY FOR PINELLAS COUNTY UNTIL 800 AM
EST...
At 731 AM EST, Doppler radar was tracking a strong thunderstorm near
Bay Pines, or near Seminole, moving northeast at 45 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Tampa, Clearwater, Largo, Pinellas Park, Seminole, St. Petersburg,
St. Pete Beach, Bay Pines, South Highpoint, Harbor Bluffs, Gandy,
Feather Sound, West And East Lealman, Ridgecrest, Safety Harbor,
Oldsmar, Gulfport, Treasure Island, Kenneth City and South Pasadena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 2790 8291 2805 8273 2799 8256 2789 8250
2766 8282 2768 8285 2786 8291
TIME...MOT...LOC 1231Z 227DEG 41KT 2779 8283
TBWLocal storm report, Feb 13, 7:39 AM EST, 2 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
739 AM EST SAT FEB 13 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 AM MARINE TSTM WIND 4 NNW BELLEAIR 27.99N 82.83W
02/13/2021 M49 MPH PINELLAS FL MESONET
MESONET STATION FW1789 CLEARWATER BEACH.
&&
DJNSpecial weather statement, Feb 13, 7:49 AM EST, 2 hours 21 minutes before
Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
749 AM EST Sat Feb 13 2021
FLZ050-052-149-151-248-249-251-131330-
Inland Hernando FL-Inland Pasco FL-Coastal Hillsborough FL-
Pinellas FL-Polk FL-Inland Hillsborough FL-Coastal Pasco FL-
749 AM EST Sat Feb 13 2021
...SIGNIFICANT WEATHER ADVISORY FOR PASCO...SOUTHEASTERN HERNANDO...
NORTH CENTRAL PINELLAS...NORTHWESTERN POLK AND NORTHERN HILLSBOROUGH
COUNTIES UNTIL 830 AM EST...
At 748 AM EST, Doppler radar was tracking strong thunderstorms along
a line extending from North Weeki Wachee to near Keystone. Movement
was east at 45 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Tampa, Spring Hill, Temple Terrace, New Port Richey, Zephyrhills,
Dade City, Hudson, Lutz, Holiday, St. Leo, Palm Harbor, Hillsborough
River State Park, New Port Richey East, Zephyrhills South,
Zephyrhills West, Land O Lakes, Greater Carrollwood, University,
Wesley Chapel South and Beacon Square.
LAT...LON 2836 8273 2857 8215 2854 8213 2854 8211
2839 8205 2832 8206 2831 8205 2832 8203
2812 8197 2804 8245 2805 8279 2817 8282
TIME...MOT...LOC 1248Z 254DEG 37KT 2857 8256 2810 8263
TBWSpecial weather statement, Feb 13, 8:42 AM EST, 1 hour 28 minutes before
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</html>Local storm report, Feb 13, 9:46 AM EST, 24 minutes before
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</html>The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 13, 7:10 AM EST | Special Marine Warning | TBW | 50 min | |
| Feb 13, 7:31 AM EST | Special Weather Statement | TBW | Pinellas | 29 min |
| Feb 13, 7:42 AM EST | Special Marine Warning | TBW | 33 min | |
| Feb 13, 7:49 AM EST | Special Weather Statement | TBW | Pasco | 41 min |
| Feb 13, 8:13 AM EST | Severe Thunderstorm Warning | TBW | Hillsborough, Pasco | 32 min |
| Feb 13, 8:17 AM EST | Special Marine Warning | TBW | 29 min | |
| Feb 13, 8:42 AM EST | Special Weather Statement | TBW | Pasco | 33 min |
Nearby
Areal Flood Advisories in Florida, 2021Every areal flood advisory in 2021
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.