Alert archive / Florida / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 30, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 1, 2015, 6:30 PM EDT for Highlands County, Polk County, Florida. It was in force for 30 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
- Jul 1, 2015, 6:30 PM EDT (22:30 UTC)
- Expired
- Jul 1, 2015, 7:00 PM EDT
- In force
- 30 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
Counties Highlands County, FL, Polk County, FL
The radar
The Tampa radar (KTBW), 87 km from the middle of the area, began a volume at 22:33 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, 10.5 hours before the alert went out and 87 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
- 2044 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 1, 3:14 PM EDT, 3 hours 16 minutes earlier.
Area forecast discussion, Jul 1, 3:14 PM EDT, 3 hours 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 314 PM EDT WED JUL 1 2015 .SYNOPSIS... ALOFT - A STOUT RIDGE SPRAWLED OUT FROM THE GREAT BASIN/ 4 CORNERS REGION...TROUGHING WAS OVER THE EASTERN CONUS WITH AN AXIS FROM JAMES BAY TO THE SOUTHEAST U.S. COAST...AND A RIDGE FROM THE ATLANTIC REACHED ACROSS THE BAHAMAS AND THE FLORIDA KEYS TO THE SOUTH-CENTRAL GULF OF MEXICO. SURFACE - A WAVY FRONTAL BOUNDARY WAS STRUNG OUT FROM THE CENTRAL ROCKIES THROUGH THE OHIO VALLEY THEN UP TO THE SAINT LAWRENCE VALLEY. ATLANTIC HIGH PRESSURE RIDGED ACROSS CENTRAL FL TO MOST OF THE GULF OF MEXICO. && .SHORT TERM (REST OF TODAY-THURSDAY)... THE WESTERN RIDGE REMAINS CENTERED IN PLACE AS IT SPREADS OUT FROM THE PACIFIC COAST TO SOUTHERN PLAINS. THE EASTERN TROUGINESS RESIDES IN PLACE WITH SHORT WAVE TROUGHS ROTATING THROUGH IT/S BASE...BRUSHING NORTHERN FL AT TIMES. THE UPPER RIDGE CONTINUES FROM THE ATLANTIC INTO THE GULF... MEANDERING ACROSS FL. THE FRONTAL BOUNDARY REMAINS OVER THE CENTRAL AND EASTERN CONUS WITH LITTLE MOVEMENT. THE SURFACE RIDGE REACHES FROM THE ATLANTIC... ACROSS FL BETWEEN BETWEEN TAMPA BAY AND CHARLOTTE HARBOR...TO THE WESTERN GULF OF MEXICO. DEEP LAYER RIDGING...ALOFT AND SURFACE...ROUGHLY BISECTING THE AREA FROM EAST TO WEST PROVIDES A SPLIT FLOW PATTERN. THERE WILL BE SOUTHWEST TO WEST WINDS NORTH OF TAMPA BAY WITH SOUTHERLY TO SOUTHEASTERLY WINDS...BUT SHIFTING TO ONSHORE IN AFTERNOON SEA BREEZES...SOUTH OF TAMPA BAY. THE ATMOSPHERE WILL BE MOIST WITH MODEL PWAT VALUES RUNNING 1.6 TO ALMOST 1.9 INCHES. THIS WILL BE ENOUGH FOR ISOLATED TO SCATTERED BUT OCCASIONALLY NUMEROUS SHOWERS AND THUNDERSTORMS. EXPECT LIMITED LATE NIGHT CONVECTION ON THE GULF THAT DRIFTS ON SHORE LATE IN THE MORNING...MORE SO IN THE NORTH DUE TO PREVAILING SW AND WEST WINDS. ACTIVITY INCREASES IN THE LATE AFTERNOON INLAND...CLOSER TO THE EAST COAST IN THE NORTH AND CLOSER TO THE GULF IN THE SOUTH...WHERE IT MAXES OUT DUE TO SEA BREEZE INTERACTIONS. TEMPERATURES STAY NEAR NORMAL TO SLIGHTLY ABOVE BY A DEGREE OR TWO. .LONG TERM (FRIDAY THROUGH NEXT WEDNESDAY)... A PERSISTENT UPPER LEVEL SYNOPTIC PATTERN WILL CONTINUE THROUGH MUCH OF THE UPCOMING HOLIDAY WEEKEND WITH LARGE SCALE RIDGING OVER THE INTER-MOUNTAIN WEST AND DOWNSTREAM TROUGHING OVER THE EASTERN CONUS. OUR FORECAST AREA SHOULD GENERALLY RESIDE JUST SOUTH OF THE MAIN INFLUENCE OF THIS TROUGH...KEEPING MORE TYPICAL SUMMER CONDITIONS IN OUR FORECAST. THE MAIN HAZARDS THROUGH THE PERIOD WILL BE SCATTERED DIURNAL STORMS...ALTHOUGH THE SURFACE RIDGE PATTERN ACROSS THE CENTRAL PENINSULA WILL KEEP THE STORM PATTERNS EACH DAY RATHER INDISTINCT. WITH MANY PLANNING OUTDOOR ACTIVITIES THIS WEEKEND... JUST EXPECT AND PLAN TO DODGE A STORM OR TWO EACH DAY...IN ALMOST ANY LOCATION. TEMPERATURES WILL BE NEAR NORMAL...WITH LOWER 90S COMMON DURING THE DAY AND HEAT INDICES WITHIN A FEW DEGREES EITHER SIDE OF 100. ANOTHER ANY SUMMER STORMS CAN BRIEFLY BECOME STRONG WITH FREQUENT LIGHTNING AND GUSTY WINDS...THERE ARE NO SYNOPTIC INFLUENCES SEEN THAT WOULD SUGGEST LIKELY STRONG TO SEVERE STORMS ANY OF THE UPCOMING HOLIDAY WEEKEND DAYS. && .AVIATION... 01/18Z-02/18Z. CONVECTION HAS CLEARED THE NORTHERN TERMINALS BUT WILL KEEP VCTS INTO MID/LATE AFTERNOON. EXPECT SHRA/TSRA TO SPREAD INTO OR EAST OF SOUTHERN TERMINAL LATER AND THEN POSSIBLY DRIFT BACK WEST IN THE EVENING...HAVE SOME TEMPO MVFR AND CARRIED VCTS INTO THE EVENING. VFR THROUGH REST OF PERIOD WITH VCSH NEAR THE END. && .MARINE... A BROAD RIDGE OF HIGH PRESSURE WILL BISECT CENTRAL FL FROM EAST TO WEST WITH RATHER MODEST WINDS AND SEAS...NO MORE THAN 15 KNOTS AND LESS THAN 4 FEET. MAIN CONCERN WILL BE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS. NO HIGHLIGHTS ARE EXPECTED THROUGH THE PERIOD. && .FIRE WEATHER... A MOIST AIRMASS WILL PRECLUDE ANY LOW HUMIDITY CONCERNS. HOWEVER THERE WILL BE LIGHTNING FROM THUNDERSTORMS. && .PRELIMINARY POINT TEMPS/POPS... TPA 78 93 78 92 / 10 20 20 40 FMY 76 94 76 94 / 40 40 30 40 GIF 75 95 76 95 / 20 40 40 50 SRQ 76 92 78 91 / 10 20 20 30 BKV 72 93 72 93 / 10 30 20 40 SPG 80 92 80 92 / 10 20 20 30 && .TBW WATCHES/WARNINGS/ADVISORIES... FL...NONE. GULF WATERS...NONE. && SYNOPSIS/SHORT TERM/AVIATION/MARINE/FIRE WEATHER...09/RUDE LONG TERM/DECISION SUPPORT SERVICES...14/MROCZKA
Hazardous weather outlook, Jul 1, 4:56 AM EDT, 13 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL 456 AM EDT WED JUL 1 2015 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- 873-876-020900- 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 WED JUL 1 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL AND SOUTHWEST FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...THUNDERSTORM IMPACT... THUNDERSTORMS ARE EXPECTED. THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING STRONG GUSTY WINDS...LOCALLY HEAVY RAINS... AND FREQUENT DEADLY LIGHTNING STRIKES. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ...THUNDERSTORM IMPACT... ON EACH DAY THUNDERSTORMS ARE EXPECTED. 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.
In the hours before
Local storm report, Jul 1, 5:39 PM EDT, 51 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>Local storm report, Jul 1, 5:42 PM EDT, 48 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>Local storm report, Jul 1, 5:45 PM EDT, 45 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>Special weather statement, Jul 1, 5:50 PM EDT, 40 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>Local storm report, Jul 1, 5:57 PM EDT, 33 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>Special weather statement, Jul 1, 6:03 PM EDT, 27 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 |
|---|---|---|---|---|
| Jul 1, 1:45 PM EDT | Special Weather Statement | TBW | Manatee | 45 min |
| Jul 1, 3:54 PM EDT | Special Weather Statement | TBW | Polk | 36 min |
| Jul 1, 4:01 PM EDT | Special Weather Statement | TBW | Charlotte | 29 min |
| Jul 1, 5:02 PM EDT | Special Weather Statement | TBW | Highlands | 43 min |
| Jul 1, 5:10 PM EDT | Special Weather Statement | TBW | Lee | 50 min |
| Jul 1, 5:21 PM EDT | Severe Thunderstorm Warning | TBW | Lee | 39 min |
| Jul 1, 5:47 PM EDT | Areal Flood Advisory | TBW | Lee | 58 min |
| Jul 1, 5:50 PM EDT | Special Weather Statement | TBW | Highlands | 40 min |
| Jul 1, 6:03 PM EDT | Special Weather Statement | TBW | Lee | 27 min |
| Jul 1, 6:23 PM EDT | Special Marine Warning | TBW | 52 min | |
| Jul 1, 6:27 PM EDT | Areal Flood Advisory | TBW | Highlands | 63 min |
| Jul 1, 6:58 PM EDT | Special Weather Statement | TBW | DeSoto | 32 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2015Every severe thunderstorm warning in 2015
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.