Alert archive / Florida / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 45, NWS Tampa Bay, FL

March 13, 1993Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Mar 13, 1993, 1:52 AM EST for Polk County, Florida. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Mar 13, 1993, 1:52 AM EST (06:52 UTC)
Expired: Mar 13, 1993, 4:00 AM EST
In force: 2 hr
Issued by: NWS Tampa Bay, FL
Area: Whole counties

County Polk County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 6.9 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 645 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, Mar 13, 12:46 AM EST, 1 hour 6 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, Mar 13, 12:50 AM EST, 1 hour 2 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, Mar 13, 1:02 AM EST, 50 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, Mar 13, 1:21 AM EST, 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>

Local storm report, Mar 13, 1:23 AM EST, 29 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, Mar 13, 1:39 AM EST, 13 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN, FL
138 AM EST SAT MAR 13 1993

DATE   TIME       LOCATION/EVENT
3/13   0110 EST   POLK COUNTY, BARTOW TO WAHNETA
                  QUARTER SIZE HdAIL OBSERVED.
                  REPORTED BY SPOTTER.

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 10:50 PM EST	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Levy	115 min
Mar 12, 10:50 PM EST	Severe Thunderstorm Warning	TBW	Hillsborough, Pasco, Pinellas	115 min
Mar 12, 10:50 PM EST	Severe Thunderstorm Warning	TBW	Manatee	115 min
Mar 12, 11:22 PM EST	Severe Thunderstorm Warning	TBW	Sarasota	101 min
Mar 12, 11:38 PM EST	Tornado Warning	TBW	Pasco, Pinellas	37 min
Mar 12, 11:54 PM EST	Severe Thunderstorm Warning	TBW	Sumter	61 min
Mar 12, 11:54 PM EST	Severe Thunderstorm Warning	TBW	Polk	2 hr
Mar 13, 12:08 AM EST	Tornado Warning	TBW	Hillsborough	52 min
Mar 13, 12:23 AM EST	Severe Thunderstorm Warning	TBW	Charlotte, DeSoto, Lee	2 hr
Mar 13, 12:23 AM EST	Severe Thunderstorm Warning	TBW	Hardee	2 hr
Mar 13, 12:43 AM EST	Tornado Warning	TBW	Manatee	47 min
Mar 13, 1:34 AM EST	Severe Thunderstorm Warning	TBW	Highlands	116 min
Mar 13, 1:37 AM EST	Severe Thunderstorm Warning	TBW	Sarasota	2 hr
Mar 13, 2:31 AM EST	Severe Thunderstorm Warning	TBW	Charlotte, DeSoto, Lee	119 min
Mar 13, 3:30 AM EST	Severe Thunderstorm Warning	TBW	Highlands	60 min
Mar 13, 3:56 AM EST	Tornado Warning	TBW	Sarasota	34 min

Nearby

Severe Thunderstorm Warnings in Florida, 1993 Every severe thunderstorm warning in 1993

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.