Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

September 19, 2021Marion County, Florida

NWS Jacksonville, FL issued this special weather statement at Sep 19, 2021, 4:35 PM EDT for Marion County, Florida. It was in force for 25 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: Sep 19, 2021, 4:35 PM EDT (20:35 UTC)
Expired: Sep 19, 2021, 5:00 PM EDT
In force: 25 min
Issued by: NWS Jacksonville, FL
Hail: 0.00 in
Wind: 30

County Marion County, FL

The radar

The Jacksonville radar (KJAX), 131 km from the middle of the area, began a volume at 20:35 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

Jacksonville, FL (KJAX), launched 12:00Z, 8.6 hours before the alert went out and 132 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: 1261 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 478 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

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 Sep 19, 3:54 PM EDT, 41 minutes earlier.

Area forecast discussion, Sep 19, 3:54 PM EDT, 41 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, Sep 19, 11:47 AM EDT, 4 hours 48 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
1147 AM EDT Sun Sep 19 2021

GAZ153-154-165-166-191630-
Inland Glynn GA-Inland Camden GA-Coastal Glynn GA-Coastal Camden GA-
1147 AM EDT Sun Sep 19 2021

...Heavy downpours will impact portions of northeastern Camden and
Glynn Counties through 1230 PM EDT...

At 1146 AM EDT, Doppler radar was tracking heavy showers over
Brunswick, moving west at 20 mph.

HAZARD...Minor flooding due to heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor flooding due to heavy rainfall is possible.

Locations impacted include...
Brunswick, St. Simons Island, Dock Junction, Country Club Estates,
Waverly, Thalmann, Sea Island, Everett, Jekyll Island and Boys
Estate.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these showers, which may
lead to localized flooding. Do not drive your vehicle through
flooded roadways.

&&

LAT...LON 3098 8142 3102 8179 3145 8163 3140 8158
      3136 8152 3133 8145 3133 8144 3131 8144
      3131 8142 3129 8141 3128 8138 3129 8139
      3129 8138 3130 8137 3130 8134 3129 8134
      3128 8130
TIME...MOT...LOC 1546Z 108DEG 17KT 3115 8148

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

NELSON

Local storm report, Sep 19, 12:34 PM EDT, 4 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
National Weather Service Jacksonville FL
1234 PM EDT SUN SEP 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0634 PM     WATER SPOUT      2 NNW CITRA             29.43N 82.12W
09/18/2021                   Alachua            FL   BROADCAST MEDIA

            MULTIPLE PICTURES POSTED ON SOCIAL MEDIA OF A WATERSPOUT
            ON SATURDAY EVENING OVER ORANGE LAKE, OR JUST NORTH OF
            CITRA, IN NORTHERN MARION COUNTY. DURATION OF THIS
            WATERSPOUT WAS AT LEAST 10 MINUTES.

&&

NELSON

Special weather statement, Sep 19, 3:25 PM EDT, 1 hour 10 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
325 PM EDT Sun Sep 19 2021

FLZ023-192000-
Baker FL-
325 PM EDT Sun Sep 19 2021

...Heavy showers will impact portions of southwestern Baker County
through 400 PM EDT...

At 324 PM EDT, Doppler radar was tracking slow moving heavy showers
near Olustee, or 16 miles northwest of Raiford, moving north at 10
mph. Rainfall amounts of 1 to 2 inches have fallen and an additional
1 to 2 inches are possible.

HAZARD...Minor flooding due to heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor flooding due to heavy rainfall is possible.

Locations impacted include...
Sanderson and Olustee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3038 8246 3040 8231 3024 8219 3015 8245
      3017 8246
TIME...MOT...LOC 1924Z 158DEG 7KT 3027 8237

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

AK

Special weather statement, Sep 19, 3:37 PM EDT, 58 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
337 PM EDT Sun Sep 19 2021

FLZ237-192000-
Western Putnam FL-
337 PM EDT Sun Sep 19 2021

...Heavy showers will impact portions of west central Putnam County
through 400 PM EDT...

At 336 PM EDT, Doppler radar was tracking heavy showers over Melrose
Landing, or near Interlachen, moving north at 5 mph. Radar estimates
up to 2.5 inches of rain has fallen and an additional 1 to 2 inches
of rain is possible.

HAZARD...Minor flooding due to heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor flooding due to heavy rainfall is possible.

Locations impacted include...
Interlachen, Melrose Landing, Johnson and Mannville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2955 8183 2952 8199 2969 8203 2972 8187
TIME...MOT...LOC 1936Z 159DEG 5KT 2966 8193

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

AK

Special weather statement, Sep 19, 3:40 PM EDT, 55 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
340 PM EDT Sun Sep 19 2021

FLZ136-236-192015-
Eastern Alachua FL-Western Alachua FL-
340 PM EDT Sun Sep 19 2021

...A heavy shower will impact portions of central Alachua County
through 415 PM EDT...

At 340 PM EDT, Doppler radar was tracking a slow moving heavy shower
over Gainesville, moving northeast at 5 mph.

HAZARD...Minor flooding due to heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor flooding due to heavy rainfall is possible.

Locations impacted include...
Gainesville, University Of Florida, Gainesville Airport, Newnans Lake
and Rochelle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2955 8239 2971 8247 2976 8233 2961 8217
TIME...MOT...LOC 1940Z 246DEG 4KT 2967 8236

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

AK

Special weather statement, Sep 19, 4:35 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
435 PM EDT Sun Sep 19 2021

FLZ140-240-192100-
Central Marion FL-Eastern Marion FL-
435 PM EDT Sun Sep 19 2021

...Slow moving thunderstorms will impact portions of northeastern
Marion County through 500 PM EDT...

At 435 PM EDT, Doppler radar was tracking slow moving thunderstorms
along a line extending from 6 miles east of Fort McCoy to near
Anthony. These storms were moving very slowly eastward less than 5
mph.

HAZARD...Minor flooding due to heavy rainfall.

SOURCE...Radar indicated.

IMPACT...Minor flooding due to heavy rainfall is possible.

Locations impacted include...
Fort McCoy and Burbank.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2934 8182 2924 8206 2930 8212 2943 8196
TIME...MOT...LOC 2035Z 256DEG 3KT 2939 8187 2930 8207

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

AK

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 18, 8:58 PM EDT	Areal Flood Warning	JAX	Alachua	3 hr
Sep 18, 10:06 PM EDT	Special Weather Statement	JAX	Alachua	54 min
Sep 18, 10:17 PM EDT	Areal Flood Warning	JAX	Alachua	3 hr
Sep 19, 6:29 AM EDT	River Flood Warning	JAX	Alachua, Union	8 days
Sep 19, 6:29 AM EDT	River Flood Warning	JAX	Alachua, Columbia	10 days
Sep 19, 7:39 AM EDT	Special Weather Statement	JAX	Duval	51 min
Sep 19, 8:32 AM EDT	Special Weather Statement	JAX	Nassau	73 min
Sep 19, 9:07 AM EDT	Areal Flood Warning	JAX	Duval	85 min
Sep 19, 9:55 AM EDT	River Flood Warning	JAX	Alachua, Columbia	3 days
Sep 19, 11:08 AM EDT	Flood Watch	JAX	Alachua, Baker, Bradford, Clay, Duval, Gilchrist and 5 more	33 hr
Sep 19, 3:25 PM EDT	Special Weather Statement	JAX	Baker	35 min
Sep 19, 3:37 PM EDT	Special Weather Statement	JAX	Putnam	23 min
Sep 19, 3:40 PM EDT	Special Weather Statement	JAX	Alachua	35 min
Sep 19, 8:44 AM EDT	Special Weather Statement	JAX	Camden	61 min
Sep 19, 10:04 AM EDT	Special Weather Statement	JAX	Camden	56 min
Sep 19, 11:47 AM EDT	Special Weather Statement	JAX	Glynn	43 min

Nearby

Special Weather Statements in Florida, 2021 Every 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.