Alert archive / Alabama / Mesoscale Discussions in 2005

Mesoscale Discussion 695

April 26, 20055 states

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2005, 1:54 PM CDT for 5 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Apr 26, 2005, 1:54 PM CDT (18:54 UTC)
Expired: Apr 26, 2005, 3:00 PM CDT
In force: 66 min
Issued by: the Storm Prediction Center

All 59 counties

Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Washington County, AL, Wilcox County, AL, Bay County, FL, Escambia County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Clay County, GA, Early County, GA, Miller County, GA, Quitman County, GA, Randolph County, GA, Stewart County, GA, Jefferson Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 73 km from the middle of the area, began a volume at 18:54 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 207Apr 26, 4:00 PM CDT

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 6.9 hours before the alert went out and 123 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, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	Escambia, Geneva, Houston	6 hr
Apr 26, 5:31 PM CDT	Mesoscale Discussion	SPC	Houston	89 min
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
Apr 25, 8:46 PM CDT	Mesoscale Discussion	SPC	Bossier, Caddo, Webster	29 min
Apr 25, 10:49 PM CDT	Mesoscale Discussion	SPC	Bossier, Caddo, De Soto	86 min
Apr 25, 11:20 PM CDT	Severe Thunderstorm Watch	SPC	Webster	7 hr
Apr 26, 1:24 AM CDT	Mesoscale Discussion	SPC	Bossier, Caddo, Claiborne, Lincoln, Morehouse, Union and 1 more	2 hr
Apr 26, 6:37 AM CDT	Mesoscale Discussion	SPC	Acadia, Allen, Ascension, Assumption, Avoyelles, Calcasieu and 34 more	83 min
Apr 26, 7:40 AM CDT	Severe Thunderstorm Watch	SPC	Ascension, Assumption, Avoyelles, Catahoula, Concordia, East Baton Rouge and 25 more	8 hr
Apr 26, 11:05 AM CDT	Mesoscale Discussion	SPC	Forrest, George, Greene, Hancock, Harrison, Jackson and 4 more	115 min

Nearby

Mesoscale Discussions in Alabama, 2005 Mesoscale Discussions in Louisiana, 2005 Mesoscale Discussions in Florida, 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; radar from the NEXRAD Level II archive.