Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

October 28, 2021Bradford County, Clay County, Florida

NWS Jacksonville, FL issued this special weather statement at Oct 28, 2021, 9:49 AM EDT for Bradford County, Clay County, Florida. It was in force for 26 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: Oct 28, 2021, 9:49 AM EDT (13:49 UTC)
Expired: Oct 28, 2021, 10:15 AM EDT
In force: 26 min
Issued by: NWS Jacksonville, FL
Hail: 0.00 in
Wind: 40

Counties Bradford County, FL, Clay County, FL

The radar

The Jacksonville radar (KJAX), 68 km from the middle of the area, began a volume at 13:48 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 1.8 hours before the alert went out and 225 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1603 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 115 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 Oct 28, 7:25 AM EDT, 2 hours 24 minutes earlier.

Area forecast discussion, Oct 28, 7:25 AM EDT, 2 hours 24 minutes before

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</head>
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In the hours before

Special weather statement, Oct 28, 9:49 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Jacksonville FL
949 AM EDT Thu Oct 28 2021

FLZ031-136-232-281415-
Eastern Alachua FL-Western Clay FL-Bradford FL-
949 AM EDT Thu Oct 28 2021

...A strong thunderstorm will impact portions of Bradford,
northeastern Alachua and Clay Counties through 1015 AM EDT...

At 949 AM EDT, Doppler radar was tracking a strong thunderstorm near
Keystone Heights, moving northeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Starke, Keystone Heights, Middleburg, Oakleaf Plantation, Lake
Geneva, Camp Blanding, Orange Heights, Kingsley, Sampson and Waldo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 2965 8219 2981 8233 3014 8213 3014 8205
      3018 8205 3017 8182 2994 8173
TIME...MOT...LOC 1349Z 224DEG 23KT 2982 8215

MAX HAIL SIZE...0.00 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
Oct 28, 10:02 AM EDT	Special Weather Statement	JAX	Duval	28 min
Oct 28, 10:07 AM EDT	Special Weather Statement	JAX	Columbia, Gilchrist, Hamilton, Suwannee	68 min
Oct 28, 11:03 AM EDT	Special Weather Statement	JAX	Alachua, Bradford, Gilchrist	57 min
Oct 28, 11:57 AM EDT	Special Weather Statement	JAX	Marion, Putnam, Saint Johns	63 min
Oct 28, 12:06 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion, Putnam	39 min
Oct 28, 12:10 PM EDT	Severe Thunderstorm Warning	JAX	Marion	50 min
Oct 28, 12:33 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Flagler, Putnam, Saint Johns	57 min
Oct 28, 12:36 PM EDT	Special Marine Warning	JAX		84 min
Oct 28, 12:45 PM EDT	Severe Thunderstorm Warning	JAX	Marion	45 min
Oct 28, 1:25 PM EDT	Severe Thunderstorm Warning	JAX	Flagler, Marion, Putnam, Saint Johns	65 min
Oct 28, 1:55 PM EDT	Special Marine Warning	JAX		95 min
Oct 28, 2:29 PM EDT	Special Weather Statement	JAX	Flagler	31 min
Oct 28, 3:37 PM EDT	Special Marine Warning	JAX		83 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.