Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Jacksonville, FL

June 21, 2021Flagler County, Florida

NWS Jacksonville, FL issued this special weather statement at Jun 21, 2021, 4:09 PM EDT for Flagler County, Florida. It was in force for 36 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 21, 2021, 4:09 PM EDT (20:09 UTC)
Expired: Jun 21, 2021, 4:45 PM EDT
In force: 36 min
Issued by: NWS Jacksonville, FL

County Flagler County, FL

The radar

The Jacksonville radar (KJAX), 122 km from the middle of the area, began a volume at 20:11 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, 8.2 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: 803 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: -110 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 21, 2:07 PM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Jun 21, 2:07 PM EDT, 2 hours 2 minutes before

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In the hours before

Special weather statement, Jun 21, 2:45 PM EDT, 1 hour 24 minutes before

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Special weather statement, Jun 21, 2:54 PM EDT, 1 hour 15 minutes before

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Special weather statement, Jun 21, 3:15 PM EDT, 54 minutes before

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Special weather statement, Jun 21, 3:30 PM EDT, 39 minutes before

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Special weather statement, Jun 21, 3:56 PM EDT, 13 minutes before

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Special weather statement, Jun 21, 4:09 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 11:51 AM EDT	Special Weather Statement	JAX	Suwannee	24 min
Jun 21, 12:20 PM EDT	Special Weather Statement	JAX	Baker, Columbia, Union	25 min
Jun 21, 12:48 PM EDT	Special Weather Statement	JAX	Baker, Nassau	27 min
Jun 21, 1:18 PM EDT	Special Weather Statement	JAX	Duval, Nassau	27 min
Jun 21, 1:20 PM EDT	Special Weather Statement	JAX	Gilchrist	40 min
Jun 21, 1:25 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Gilchrist	35 min
Jun 21, 1:27 PM EDT	Special Weather Statement	JAX	Suwannee	48 min
Jun 21, 1:29 PM EDT	Special Marine Warning	JAX		91 min
Jun 21, 1:32 PM EDT	Special Weather Statement	JAX	Saint Johns	43 min
Jun 21, 1:45 PM EDT	Special Weather Statement	JAX	Bradford, Clay	45 min
Jun 21, 2:00 PM EDT	Special Weather Statement	JAX	Gilchrist	45 min
Jun 21, 2:17 PM EDT	Special Weather Statement	JAX	Saint Johns	43 min
Jun 21, 2:25 PM EDT	Special Weather Statement	JAX	Bradford, Union	50 min
Jun 21, 2:29 PM EDT	Special Marine Warning	JAX		91 min
Jun 21, 2:45 PM EDT	Special Weather Statement	JAX	Putnam	45 min
Jun 21, 2:54 PM EDT	Special Weather Statement	JAX	Bradford	36 min
Jun 21, 3:15 PM EDT	Special Weather Statement	JAX	Suwannee	45 min
Jun 21, 3:30 PM EDT	Special Weather Statement	JAX	Gilchrist	30 min
Jun 21, 3:38 PM EDT	Special Marine Warning	JAX		97 min
Jun 21, 3:56 PM EDT	Special Weather Statement	JAX	Flagler	49 min
Jun 21, 4:19 PM EDT	Special Weather Statement	JAX	Alachua	26 min
Jun 21, 5:11 PM EDT	Special Weather Statement	JAX	Flagler	34 min
Jun 21, 7:37 PM EDT	Special Marine Warning	JAX		23 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.