Alert archive / Florida / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 185, NWS Tallahassee, FL

July 10, 2020Bay County, Calhoun County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 10, 2020, 1:22 PM CDT for Bay County, Calhoun County, Florida. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 10, 2020, 1:22 PM CDT (18:22 UTC)
Expired: Jul 10, 2020, 2:15 PM CDT
In force: 53 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bay County, FL, Calhoun County, FL

The radar

The Eglin Afb radar (KEVX), 56 km from the middle of the area, began a volume at 18:22 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 12:00Z, 6.4 hours before the alert went out and 107 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: 982 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 10, 9:49 AM CDT, 3 hours 33 minutes earlier.

Area forecast discussion, Jul 10, 9:49 AM CDT, 3 hours 33 minutes before

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In the hours before

Special weather statement, Jul 10, 12:16 PM CDT, 1 hour 6 minutes before

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Special weather statement, Jul 10, 12:44 PM CDT, 38 minutes before

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Special weather statement, Jul 10, 1:09 PM CDT, 13 minutes before

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Local storm report, Jul 10, 1:13 PM CDT, 9 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
Jul 10, 2:43 AM CDT	Heat Advisory	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	16 hr
Jul 10, 3:03 AM CDT	Rip Current Statement	TAE	Gulf	20 hr
Jul 10, 12:11 PM CDT	Special Marine Warning	TAE		67 min
Jul 10, 12:16 PM CDT	Special Weather Statement	TAE	Walton	44 min
Jul 10, 12:44 PM CDT	Special Weather Statement	TAE	Bay	46 min
Jul 10, 1:09 PM CDT	Special Weather Statement	TAE	Bay	36 min
Jul 10, 1:50 PM CDT	Special Weather Statement	TAE	Liberty	40 min
Jul 10, 2:29 PM CDT	Special Weather Statement	TAE	Walton	31 min
Jul 10, 2:49 PM CDT	Special Weather Statement	TAE	Washington	26 min
Jul 10, 3:16 PM CDT	Special Weather Statement	TAE	Washington	29 min
Jul 10, 3:20 PM CDT	Special Weather Statement	TAE	Washington	25 min
Jul 10, 4:50 PM CDT	Special Weather Statement	TAE	Jackson	40 min
Jul 10, 5:07 PM CDT	Special Weather Statement	TAE	Gadsden	38 min
Jul 10, 5:41 PM CDT	Special Weather Statement	TAE	Gadsden	34 min
Jul 10, 5:54 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon	16 min
Jul 10, 3:52 PM CDT	Special Weather Statement	TAE	Seminole	38 min
Jul 10, 4:26 PM CDT	Special Weather Statement	TAE	Decatur, Seminole	34 min
Jul 10, 3:12 PM CDT	Special Weather Statement	TAE	Houston	33 min

Nearby

Severe Thunderstorm Warnings in Florida, 2020 Every severe thunderstorm warning in 2020

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.