Alert archive / Florida / Mesoscale Discussions in 2007

Mesoscale Discussion 601

April 26, 2007Henry County, Houston County, Alabama; 4 counties in Florida; Early County, Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2007, 5:26 PM CDT for Henry County, Houston County, Alabama; 4 counties in Florida; Early County, Georgia. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: Apr 26, 2007, 5:26 PM CDT (22:26 UTC)
Expired: Apr 26, 2007, 6:30 PM CDT
In force: 64 min
Issued by: the Storm Prediction Center

Counties Henry County, AL, Houston County, AL, Bay County, FL, Holmes County, FL, Jackson County, FL, Washington County, FL, Early County, GA

The radar

The Eglin Afb radar (KEVX), 43 km from the middle of the area, began a volume at 22:26 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, 10.4 hours before the alert went out and 117 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: 1318 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 195 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 25, 11:50 PM CDT	Mesoscale Discussion	SPC	Mobile, Washington	85 min
Apr 26, 12:41 AM CDT	Tornado Watch	SPC	Baldwin, Choctaw, Clarke, Mobile, Washington	7 hr
Apr 26, 4:46 AM CDT	Mesoscale Discussion	SPC	Baldwin, Choctaw, Clarke, Marengo, Mobile, Monroe and 1 more	89 min
Apr 26, 7:12 AM CDT	Mesoscale Discussion	SPC	Baldwin, Clarke, Mobile, Monroe, Washington	93 min
Apr 26, 2:12 PM CDT	Mesoscale Discussion	SPC	Barbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 12 more	63 min
Apr 26, 2:42 PM CDT	Tornado Watch	SPC	Barbour, Bullock, Coffee, Dale, Geneva, Henry and 3 more	3 hr
Apr 26, 4:33 PM CDT	Mesoscale Discussion	SPC	Cherokee, DeKalb, Etowah, Jackson, Marshall	57 min
Apr 26, 4:53 PM CDT	Tornado Watch	SPC	DeKalb, Jackson, Marshall	5 hr

Nearby

Mesoscale Discussions in Florida, 2007 Mesoscale Discussions in Alabama, 2007 Mesoscale Discussions in Georgia, 2007 Every mesoscale discussion in 2007

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.