Alert archive / Florida / Flash Flood Warnings in 2023
Flash Flood Warning 1, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this flash flood warning at Jun 20, 2023, 10:10 AM EDT for Levy County, Florida. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 20, 2023, 10:10 AM EDT (14:10 UTC)
- Expired
- Jun 20, 2023, 11:45 AM EDT
- In force
- 95 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Levy County, FL
The radar
The Jacksonville radar (KJAX), 170 km from the middle of the area, began a volume at 14:10 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, 2.2 hours before the alert went out and 179 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
- 1770 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 900 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 158 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 warning 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 warning went out at Jun 20, 9:39 AM EDT, 31 minutes earlier.
Area forecast discussion, Jun 20, 9:39 AM EDT, 31 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>In the hours before
Special weather statement, Jun 20, 6:05 AM EDT, 4 hours 5 minutes before
Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
605 AM EDT Tue Jun 20 2023
FLZ239-201030-
Inland Levy FL-
605 AM EDT Tue Jun 20 2023
...A strong thunderstorm will impact portions of northeastern Levy
County through 630 AM EDT...
At 605 AM EDT, Doppler radar was tracking a strong thunderstorm over
East Bronson, or near Bronson, moving northeast at 35 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Williston, Bronson, Williston Highlands, East Bronson, and Williston
Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2954 8265 2954 8256 2948 8255 2948 8241
2923 8241 2921 8246 2922 8253 2920 8254
2946 8277 2955 8266
TIME...MOT...LOC 1005Z 240DEG 31KT 2942 8258
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
TBWSpecial weather statement, Jun 20, 6:32 AM EDT, 3 hours 38 minutes before
Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
632 AM EDT Tue Jun 20 2023
FLZ139-239-201130-
Coastal Levy FL-Inland Levy FL-
632 AM EDT Tue Jun 20 2023
...Strong thunderstorms will impact portions of Levy County through
730 AM EDT...
At 632 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Trenton to Manattee Road to 8 miles west of
Fowlers Bluff. Movement was east at 20 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Williston, Chiefland, Bronson, Williston Highlands, East Bronson,
Fowlers Bluff, Andrews, Williston Municipal Airport, Manattee Road,
Fanning Springs, Otter Creek, and Manatee Springs State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 2932 8314 2932 8312 2935 8306 2937 8307
2940 8302 2945 8301 2947 8298 2954 8298
2956 8295 2959 8294 2958 8278 2956 8275
2957 8266 2954 8265 2954 8256 2948 8255
2948 8241 2933 8240 2921 8285 2929 8317
TIME...MOT...LOC 1032Z 279DEG 19KT 2961 8281 2950 8291 2936 8315
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
TBWSpecial weather statement, Jun 20, 8:07 AM EDT, 2 hours 3 minutes before
Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
807 AM EDT Tue Jun 20 2023
FLZ239-201245-
Inland Levy FL-
807 AM EDT Tue Jun 20 2023
...A strong thunderstorm will impact portions of east central Levy
County through 845 AM EDT...
At 807 AM EDT, Doppler radar was tracking a strong thunderstorm over
Williston Highlands, or near Williston, moving east at 20 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Williston, Williston Highlands, and Williston Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 2922 8240 2922 8253 2921 8254 2921 8263
2938 8268 2943 8241
TIME...MOT...LOC 1207Z 265DEG 18KT 2931 8252
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
TBWSpecial weather statement, Jun 20, 9:01 AM EDT, 1 hour 9 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 8:33 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 37 min |
| Jun 19, 9:10 PM EDT | Special Weather Statement | TBW | Polk | 35 min |
| Jun 20, 6:05 AM EDT | Special Weather Statement | TBW | Levy | 25 min |
| Jun 20, 6:27 AM EDT | Areal Flood Advisory | TBW | Levy | 2 hr |
| Jun 20, 6:32 AM EDT | Special Weather Statement | TBW | Levy | 58 min |
| Jun 20, 8:07 AM EDT | Special Weather Statement | TBW | Levy | 38 min |
| Jun 20, 8:18 AM EDT | Rip Current Statement | TBW | Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota | 36 hr |
| Jun 20, 9:01 AM EDT | Special Weather Statement | TBW | Levy | 29 min |
| Jun 20, 9:26 AM EDT | Areal Flood Warning | TBW | Levy | 2 hr |
| Jun 20, 12:53 PM EDT | Special Weather Statement | TBW | Osceola | 37 min |
| Jun 20, 1:30 PM EDT | Special Marine Warning | TBW | 90 min | |
| Jun 20, 1:43 PM EDT | Special Weather Statement | TBW | Highlands | 47 min |
| Jun 20, 2:09 PM EDT | Severe Thunderstorm Warning | TBW | Highlands | 35 min |
| Jun 20, 2:14 PM EDT | Special Marine Warning | TBW | 46 min | |
| Jun 20, 2:32 PM EDT | Special Weather Statement | TBW | Citrus, Hernando, Pasco, Sumter | 28 min |
| Jun 20, 2:45 PM EDT | Special Weather Statement | TBW | Highlands | 30 min |
| Jun 20, 2:59 PM EDT | Special Weather Statement | TBW | Citrus, Hernando, Hillsborough, Pasco, Sumter | 31 min |
| Jun 20, 3:31 PM EDT | Special Weather Statement | TBW | Sumter | 29 min |
| Jun 20, 3:35 PM EDT | Areal Flood Advisory | TBW | Highlands | 85 min |
| Jun 20, 3:53 PM EDT | Special Weather Statement | TBW | Polk | 37 min |
| Jun 20, 4:04 PM EDT | Special Weather Statement | TBW | Levy | 41 min |
| Jun 20, 5:02 PM EDT | Special Weather Statement | TBW | Levy | 28 min |
| Jun 20, 6:08 PM EDT | Special Weather Statement | TBW | Highlands | 22 min |
| Jun 20, 7:31 PM EDT | Special Weather Statement | TBW | DeSoto | 44 min |
Nearby
Flash Flood Warnings in Florida, 2023Every flash flood warning in 2023
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.