Alert archive / Florida / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 65, NWS Tampa Bay, FL

June 23, 2009Highlands County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 23, 2009, 1:14 PM EDT for Highlands County, Florida. It was in force for 31 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: Jun 23, 2009, 1:14 PM EDT (17:14 UTC)
Expired: Jun 23, 2009, 1:45 PM EDT
In force: 31 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

County Highlands County, FL

The radar

The Melbourne radar (KMLB), 109 km from the middle of the area, began a volume at 17:18 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 7:27 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.2 hours before the alert went out and 112 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: 4313 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.8

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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 9:08 AM EDT, 4 hours 6 minutes earlier.

Area forecast discussion, Jun 23, 9:08 AM EDT, 4 hours 6 minutes before

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Hazardous weather outlook, Jun 23, 9:25 AM EDT, 3 hours 49 minutes before

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In the hours before

Local storm report, Jun 23, 7:29 AM EDT, 5 hours 45 minutes before

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Special weather statement, Jun 23, 7:38 AM EDT, 5 hours 36 minutes before

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Special weather statement, Jun 23, 11:49 AM EDT, 1 hour 25 minutes before

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Special weather statement, Jun 23, 12:21 PM EDT, 53 minutes before

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Special weather statement, Jun 23, 1:10 PM EDT, 4 minutes before

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Local storm report, Jun 23, 1:12 PM EDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 5:13 AM EDT	Special Weather Statement	TBW	Polk	62 min
Jun 23, 6:16 AM EDT	Special Weather Statement	TBW	Polk	44 min
Jun 23, 7:01 AM EDT	Special Weather Statement	TBW	Highlands	44 min
Jun 23, 7:38 AM EDT	Special Weather Statement	TBW	Highlands	37 min
Jun 23, 10:48 AM EDT	Heat Advisory	TBW	DeSoto, Hardee, Highlands, Pinellas, Polk, Sumter	8 hr
Jun 23, 11:49 AM EDT	Special Weather Statement	TBW	Polk	41 min
Jun 23, 12:21 PM EDT	Special Weather Statement	TBW	Hardee, Polk	39 min
Jun 23, 1:10 PM EDT	Special Weather Statement	TBW	DeSoto, Hardee, Highlands	35 min
Jun 23, 1:48 PM EDT	Special Weather Statement	TBW	Charlotte	42 min
Jun 23, 2:03 PM EDT	Severe Thunderstorm Warning	TBW	Polk	57 min
Jun 23, 3:32 PM EDT	Special Weather Statement	TBW	Sumter	43 min
Jun 23, 4:35 PM EDT	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Sumter	40 min
Jun 23, 4:47 PM EDT	Special Marine Warning	TBW		43 min
Jun 23, 5:18 PM EDT	Severe Thunderstorm Warning	TBW	Citrus, Sumter	42 min
Jun 23, 5:31 PM EDT	Special Marine Warning	TBW		59 min
Jun 23, 5:33 PM EDT	Areal Flood Advisory	TBW	Citrus	57 min
Jun 23, 5:47 PM EDT	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Sumter	58 min
Jun 23, 6:10 PM EDT	Special Weather Statement	TBW	Pasco	50 min
Jun 23, 6:11 PM EDT	Special Weather Statement	TBW	Pasco	49 min
Jun 23, 7:04 PM EDT	Special Weather Statement	TBW	Highlands	56 min
Jun 23, 7:09 PM EDT	Special Weather Statement	TBW	Highlands	51 min
Jun 23, 7:21 PM EDT	Special Weather Statement	TBW	Polk	24 min
Jun 23, 7:49 PM EDT	Special Weather Statement	TBW	Hardee, Highlands	71 min

Nearby

Severe Thunderstorm Warnings in Florida, 2009 Every severe thunderstorm warning in 2009

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.