Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

June 29, 2021Marion County, Florida

NWS Jacksonville, FL issued this special weather statement at Jun 29, 2021, 1:12 PM EDT for Marion County, Florida. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 29, 2021, 1:12 PM EDT (17:12 UTC)
Expired
Jun 29, 2021, 2:00 PM EDT
In force
48 min
Issued by
NWS Jacksonville, FL

County Marion County, FL

The radar

The Tampa radar (KTBW), 151 km from the middle of the area, began a volume at 17:16 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, 5.2 hours before the alert went out and 151 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-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 2021-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2021-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1021 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
889 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this special weather statement went out at Jun 29, 9:51 AM EDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jun 29, 9:51 AM EDT, 3 hours 21 minutes before
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    <section class="card" role="status" aria-live="polite">
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      <h1 id="headline">This service is currently unavailable.</h1>
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In the hours before

Special weather statement, Jun 29, 1:08 PM EDT, 4 minutes before
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<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.
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Special weather statement, Jun 29, 1:12 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
112 PM EDT Tue Jun 29 2021

FLZ136-236-291800-
Eastern Alachua FL-Western Alachua FL-
112 PM EDT Tue Jun 29 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ALACHUA COUNTY UNTIL
200 PM EDT...

* At 112 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near University Of Florida, or near
  Gainesville, moving northwest at 15 mph.

* Winds in excess of 45 mph and minor flooding due to heavy rainfall
  is possible with this storm.

* Locations impacted include...
  Alachua, High Springs and Newberry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

Torrential rainfall is occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

LAT...LON 2973 8266 2987 8253 2964 8236 2961 8232
      2954 8235 2956 8241 2961 8266
TIME...MOT...LOC 1712Z 121DEG 14KT 2961 8240

AK
Special weather statement, Jun 29, 1:12 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Jacksonville FL
112 PM EDT Tue Jun 29 2021

FLZ240-340-291800-
Central Marion FL-Western Marion FL-
112 PM EDT Tue Jun 29 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MARION COUNTY UNTIL
200 PM EDT...

* At 110 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm 9 miles southwest of Santos, or 11
  miles northwest of Wildwood, moving northwest at 15 mph.

* Winds in excess of 45 mph and minor flooding due to heavy rainfall
  is possible with this storm.

* Locations impacted include...
  Rainbow Lakes Estates, Dunnellon and Romeo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

Torrential rainfall is occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Jacksonville on
Facebook and Twitter.

&&

LAT...LON 2897 8232 2902 8240 2902 8242 2905 8247
      2904 8250 2904 8254 2921 8254 2922 8240
      2925 8240 2896 8201 2896 8231
TIME...MOT...LOC 1710Z 121DEG 14KT 2898 8217

AK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:08 PM EDTSpecial Weather StatementJAXUnion52 min
Jun 29, 1:12 PM EDTSpecial Weather StatementJAXAlachua48 min
Jun 29, 1:33 PM EDTSpecial Weather StatementJAXAlachua27 min
Jun 29, 1:53 PM EDTSpecial Weather StatementJAXAlachua37 min
Jun 29, 1:55 PM EDTSpecial Weather StatementJAXBaker35 min
Jun 29, 2:15 PM EDTSpecial Weather StatementJAXGilchrist45 min
Jun 29, 2:36 PM EDTSpecial Weather StatementJAXGilchrist39 min
Jun 29, 3:19 PM EDTSpecial Weather StatementJAXHamilton41 min
Jun 29, 3:24 PM EDTSpecial Weather StatementJAXSuwannee51 min
Jun 29, 2:13 PM EDTSpecial Weather StatementJAXClinch47 min
Jun 29, 2:49 PM EDTSpecial Weather StatementJAXEchols41 min
Jun 29, 4:41 PM EDTSpecial Weather StatementJAXAtkinson49 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement 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.