Alert archive / Florida / Flash Flood Watches in 2017
Flash Flood Watch 1, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this flash flood watch at Sep 9, 2017, 12:24 AM EDT for 15 counties in Florida. It was in force for 53 hr.
The area
The counties it named.
The facts
- Issued
- Sep 9, 2017, 12:24 AM EDT (04:24 UTC)
- Expired
- Sep 11, 2017, 5:33 AM EDT
- In force
- 53 hr
- Issued by
- NWS Tampa Bay, FL
- Flood severity
- None
Counties Charlotte County, FL, Citrus County, FL, DeSoto County, FL, Hardee County, FL, Hernando County, FL, Highlands County, FL, Hillsborough County, FL, Lee County, FL, Levy County, FL, Manatee County, FL, Pasco County, FL, Pinellas County, FL, Polk County, FL, Sarasota County, FL, Sumter County, FL
The radar
The Tampa radar (KTBW), 27 km from the middle of the area, began a volume at 04:24 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 00:00Z, 4.4 hours before the alert went out and 28 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
- 1674 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Sep 9, 12:18 AM EDT, 6 minutes earlier.
Area forecast discussion, Sep 9, 12:18 AM EDT, 6 minutes before
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</html>Hazardous weather outlook, Sep 8, 4:58 AM EDT, 19 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Tampa Bay Ruskin FL 458 AM EDT Fri Sep 8 2017 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- 873-876-082100- 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- 458 AM EDT Fri Sep 8 2017 This Hazardous Weather Outlook is for West Central And Southwest Florida. .DAY ONE...Today and Tonight. ...THUNDERSTORM IMPACT... Scattered to numerous thunderstorms will develop this afternoon and persist into the evening hours. The stronger storms will be capable of producing locally heavy rain, wind gusts of 40 to 50 MPH, and frequent deadly lightning strikes. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. ...TROPICAL IMPACT... Hurricane Irma will create the potential for damaging winds, marine impacts, heavy rain and flooding, and other hazards Saturday through Monday across west central and southwest Florida. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. Oglesby
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 10:01 AM EDT | River Flood Warning | TBW | Hillsborough | 4 days |
| Sep 9, 7:55 PM EDT | Flash Flood Warning | TBW | Lee | 6 hr |
Nearby
Flash Flood Watches in Florida, 2017Every flash flood watch in 2017
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.