Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 1, NWS Tallahassee, FL

January 20, 2010Bay County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 20, 2010, 9:40 PM CST for Bay County, Florida. It was in force for 50 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: Jan 20, 2010, 9:40 PM CST (03:40 UTC)
Expired: Jan 20, 2010, 10:30 PM CST
In force: 50 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

County Bay County, FL

The radar

The Eglin Afb radar (KEVX), 46 km from the middle of the area, began a volume at 03:43 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

Eglin AFB/Valpar, FL (KVPS), launched 00:00Z, 3.7 hours before the alert went out and 87 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: 626 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 244 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 Jan 20, 9:40 PM CST, 0 minutes earlier.

Area forecast discussion, Jan 20, 9:40 PM CST, 0 minutes before

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Hazardous weather outlook, Jan 20, 9:06 PM CST, 34 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
Jan 20, 8:50 PM CST	Special Marine Warning	TAE		55 min
Jan 20, 9:19 PM CST	River Flood Warning	TAE	Holmes, Washington	27 days
Jan 20, 10:07 PM CST	River Flood Warning	TAE	Calhoun, Franklin, Gulf, Liberty	31 days
Jan 20, 10:09 PM CST	Special Marine Warning	TAE		36 min
Jan 21, 1:23 AM CST	Flood Watch	TAE	Holmes, Jackson, Walton, Washington	10 hr
Jan 21, 3:40 AM CST	Areal Flood Warning	TAE	Holmes, Jackson, Walton, Washington	3 hr
Jan 21, 4:13 AM CST	Tornado Warning	TAE	Jackson	23 min
Jan 21, 4:49 AM CST	Tornado Warning	TAE	Holmes, Walton, Washington	21 min
Jan 21, 5:52 AM CST	River Flood Warning	TAE	Walton	31 days
Jan 21, 6:41 AM CST	Areal Flood Warning	TAE	Calhoun, Holmes, Jackson, Walton, Washington	2 hr
Jan 21, 6:43 AM CST	Severe Thunderstorm Warning	TAE	Calhoun, Jackson	47 min
Jan 21, 6:49 AM CST	Special Marine Warning	TAE		56 min
Jan 21, 7:05 AM CST	Tornado Warning	TAE	Calhoun, Liberty	25 min
Jan 21, 7:16 AM CST	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	44 min
Jan 21, 7:20 AM CST	Severe Thunderstorm Warning	TAE	Wakulla	25 min
Jan 21, 7:31 AM CST	Tornado Warning	TAE	Jefferson, Leon, Wakulla	44 min
Jan 21, 7:34 AM CST	Tornado Warning	TAE	Gadsden	41 min
Jan 21, 7:45 AM CST	Special Marine Warning	TAE		2 hr
Jan 21, 7:58 AM CST	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty, Wakulla	47 min
Jan 21, 8:05 AM CST	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gulf	40 min
Jan 21, 8:07 AM CST	Tornado Warning	TAE	Gadsden, Leon	23 min
Jan 21, 8:33 AM CST	River Flood Warning	TAE	Wakulla	12 days
Jan 21, 8:34 AM CST	Severe Thunderstorm Warning	TAE	Calhoun, Gadsden, Gulf, Liberty	26 min
Jan 21, 8:51 AM CST	Flash Flood Warning	TAE	Gadsden, Leon, Liberty, Wakulla	114 min
Jan 21, 8:53 AM CST	Severe Thunderstorm Warning	TAE	Jefferson, Madison	21 min
Jan 21, 9:00 AM CST	Severe Thunderstorm Warning	TAE	Leon, Liberty, Wakulla	30 min
Jan 21, 9:14 AM CST	Tornado Warning	TAE	Wakulla	31 min
Jan 21, 9:49 AM CST	Special Marine Warning	TAE		86 min
Jan 21, 9:57 AM CST	Severe Thunderstorm Warning	TAE	Jefferson, Taylor	48 min
Jan 21, 10:47 AM CST	Severe Thunderstorm Warning	TAE	Lafayette, Taylor	43 min
Jan 21, 11:18 AM CST	Special Marine Warning	TAE		57 min
Jan 21, 11:22 AM CST	Flash Flood Warning	TAE	Franklin, Wakulla	53 min
Jan 21, 11:35 AM CST	Flash Flood Warning	TAE	Lafayette, Taylor	55 min
Jan 21, 12:28 PM CST	Special Marine Warning	TAE		2 hr
Jan 21, 12:29 PM CST	Flash Flood Warning	TAE	Lafayette, Taylor	61 min
Jan 21, 1:34 PM CST	Areal Flood Advisory	TAE	Dixie, Lafayette, Taylor	86 min
Jan 21, 3:38 PM CST	River Flood Warning	TAE	Gadsden, Leon	8 days
Jan 21, 5:33 PM CST	Marine Dense Fog Advisory	TAE		17 hr
Jan 21, 5:40 PM CST	Dense Fog Advisory	TAE	Bay, Dixie, Franklin, Gulf, Taylor, Wakulla and 1 more	9 hr
Jan 20, 10:02 PM CST	River Flood Warning	TAE	Lowndes	8 days
Jan 20, 10:05 PM CST	River Flood Warning	TAE	Lee	7 days
Jan 21, 3:27 AM CST	Areal Flood Warning	TAE	Calhoun, Clay, Dougherty, Early, Lee, Quitman and 3 more	3 hr
Jan 21, 6:26 AM CST	River Flood Warning	TAE	Decatur	7 days
Jan 21, 8:25 AM CST	Severe Thunderstorm Warning	TAE	Grady, Thomas	35 min
Jan 21, 9:30 AM CST	Areal Flood Warning	TAE	Ben Hill, Berrien, Brooks, Colquitt, Cook, Dougherty and 8 more	2 hr
Jan 21, 9:34 AM CST	River Flood Warning	TAE	Dougherty	6 days
Jan 21, 9:38 AM CST	River Flood Warning	TAE	Baker, Mitchell	6 days
Jan 21, 1:57 PM CST	River Flood Warning	TAE	Terrell, Webster	44 hr
Jan 20, 9:19 PM CST	River Flood Warning	TAE	Dale	59 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2010 Every severe thunderstorm warning in 2010

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.