Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 697

April 26, 2005Houston County, Alabama; 9 counties in Florida; Decatur County, Miller County, Seminole County, Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2005, 5:31 PM CDT for Houston County, Alabama; 9 counties in Florida; Decatur County, Miller County, Seminole County, Georgia. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Apr 26, 2005, 5:31 PM CDT (22:31 UTC)
Expired: Apr 26, 2005, 7:00 PM CDT
In force: 89 min
Issued by: the Storm Prediction Center

Counties Houston County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Walton County, FL, Washington County, FL, Decatur County, GA, Miller County, GA, Seminole County, GA

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 10.5 hours before the alert went out and 102 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: 780 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 343 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 9:49 AM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Calhoun and 38 more	116 min
Apr 26, 1:54 PM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Barbour, Bullock, Butler, Clarke and 20 more	66 min
Apr 26, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Escambia, Geneva, Houston	6 hr
Apr 26, 12:19 PM CDT	Mesoscale Discussion	SPC	Baker, Bradford, Columbia, Duval, Gadsden, Hamilton and 10 more	116 min
Apr 26, 12:55 PM CDT	Severe Thunderstorm Watch	SPC	Alachua, Baker, Bradford, Brevard, Citrus, Clay and 28 more	7 hr
Apr 26, 3:17 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Brevard, Citrus, Clay and 27 more	58 min
Apr 26, 5:47 PM CDT	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Brevard, Citrus, Clay and 28 more	58 min

Nearby

Mesoscale Discussions in Florida, 2005 Mesoscale Discussions in Georgia, 2005 Mesoscale Discussions in Alabama, 2005 Every mesoscale discussion in 2005

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.