Alert archive / Florida / Special Weather Statements in 2023

Special Weather Statement, NWS Jacksonville, FL

April 8, 2023Hamilton County, Florida

NWS Jacksonville, FL issued this special weather statement at Apr 8, 2023, 3:08 PM EDT for Hamilton County, Florida. It was in force for 37 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: Apr 8, 2023, 3:08 PM EDT (19:08 UTC)
Expired: Apr 8, 2023, 3:45 PM EDT
In force: 37 min
Issued by: NWS Jacksonville, FL
Hail: 0.50 in
Wind: 40

County Hamilton County, FL

The radar

The Moody AFB radar (KVAX), 58 km from the middle of the area, began a volume at 19:11 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, 7.1 hours before the alert went out and 123 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: 288 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Apr 8, 1:58 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Apr 8, 1:58 PM EDT, 1 hour 10 minutes before

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  <link rel="stylesheet" href="index.css">
</head>
<body>
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    <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.
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In the hours before

Special weather statement, Apr 8, 3:08 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
308 PM EDT Sat Apr 8 2023

FLZ020-021-081945-
Hamilton FL-Suwannee FL-
308 PM EDT Sat Apr 8 2023

...A strong thunderstorm will impact portions of northeastern
Suwannee and central Hamilton Counties through 345 PM EDT...

At 308 PM EDT, Doppler radar was tracking a strong thunderstorm near
Live Oak, moving east at 10 mph.

HAZARD...Winds around 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Live Oak, Jasper and Suwannee Springs.

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 3026 8308 3035 8309 3055 8300 3052 8280
      3029 8280
TIME...MOT...LOC 1908Z 250DEG 10KT 3033 8301

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 2:06 PM EDT	Wind Advisory	JAX	Clay, Duval, Flagler, Nassau	54 hr
Apr 8, 2:08 PM EDT	Coastal Flood Watch	JAX	Duval, Flagler, Nassau	13 hr
Apr 8, 2:30 PM EDT	Gale Warning	JAX		49 hr
Apr 8, 4:15 PM EDT	Special Weather Statement	JAX	Hamilton	30 min
Apr 8, 4:38 PM EDT	Special Weather Statement	JAX	Suwannee	37 min
Apr 8, 4:44 PM EDT	Special Weather Statement	JAX	Baker	31 min
Apr 8, 5:27 PM EDT	Special Weather Statement	JAX	Columbia	33 min
Apr 8, 5:48 PM EDT	Tornado Warning	JAX	Columbia	27 min
Apr 8, 5:52 PM EDT	Special Weather Statement	JAX	Baker	38 min
Apr 8, 5:55 PM EDT	Special Weather Statement	JAX	Bradford, Union	35 min
Apr 8, 6:14 PM EDT	Tornado Warning	JAX	Baker, Columbia, Union	31 min
Apr 8, 6:28 PM EDT	Special Weather Statement	JAX	Clay	32 min
Apr 8, 6:29 PM EDT	Special Weather Statement	JAX	Baker	31 min
Apr 8, 6:45 PM EDT	Special Weather Statement	JAX	Union	30 min
Apr 8, 7:01 PM EDT	Special Weather Statement	JAX	Clay	29 min
Apr 8, 7:54 PM EDT	Special Weather Statement	JAX	Union	36 min
Apr 7, 10:15 PM EDT	Special Weather Statement	JAX	Ware	30 min
Apr 7, 10:48 PM EDT	Special Weather Statement	JAX	Bacon, Ware	42 min

Nearby

Special Weather Statements in Florida, 2023 Every special weather statement 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.