Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tallahassee, FL

December 18, 2021Holmes County, Florida

NWS Tallahassee, FL issued this special weather statement at Dec 18, 2021, 9:37 PM CST for Holmes County, Florida. It was in force for 38 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: Dec 18, 2021, 9:37 PM CST (03:37 UTC)
Expired: Dec 18, 2021, 10:15 PM CST
In force: 38 min
Issued by: NWS Tallahassee, FL
Hail: 0.00 in
Wind: 40

County Holmes County, FL

The radar

The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 03:36 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.6 hours before the alert went out and 178 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: 430 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 96 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 Tallahassee, FL wrote its last area forecast discussion before this special weather statement went out at Dec 18, 8:52 PM CST, 45 minutes earlier.

Area forecast discussion, Dec 18, 8:52 PM CST, 45 minutes before

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In the hours before

Special weather statement, Dec 18, 4:05 PM CST, 5 hours 32 minutes before

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Special weather statement, Dec 18, 4:30 PM CST, 5 hours 7 minutes before

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Special weather statement, Dec 18, 4:45 PM CST, 4 hours 52 minutes before

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Special weather statement, Dec 18, 5:31 PM CST, 4 hours 6 minutes before

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Local storm report, Dec 18, 7:04 PM CST, 2 hours 33 minutes before

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Special weather statement, Dec 18, 9:37 PM CST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 19, 12:36 AM CST	Special Weather Statement	TAE	Gulf, Liberty	39 min
Dec 19, 1:27 AM CST	Special Weather Statement	TAE	Wakulla	48 min
Dec 19, 1:58 AM CST	Special Marine Warning	TAE		32 min
Dec 19, 2:21 AM CST	Special Weather Statement	TAE	Wakulla	54 min
Dec 19, 1:30 AM CST	Special Weather Statement	TAE	Ben Hill, Irwin, Tift	30 min
Dec 19, 2:29 AM CST	Special Weather Statement	TAE	Thomas	46 min
Dec 19, 4:06 AM CST	Special Weather Statement	TAE	Brooks, Cook	54 min
Dec 18, 6:39 PM CST	Areal Flood Advisory	TAE	Coffee, Dale, Geneva, Henry	3 hr
Dec 18, 9:08 PM CST	Areal Flood Advisory	TAE	Coffee, Dale, Geneva, Houston	3 hr

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.