Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 360

March 23, 200512 counties in Florida; 6 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2005, 1:35 AM CST for 12 counties in Florida; 6 counties in Georgia. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Mar 23, 2005, 1:35 AM CST (07:35 UTC)
Expired: Mar 23, 2005, 3:00 AM CST
In force: 85 min
Issued by: the Storm Prediction Center

Counties Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Brooks County, GA, Decatur County, GA, Grady County, GA, Lowndes County, GA, Seminole County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 66 km from the middle of the area, began a volume at 07:35 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 00:00Z, 7.6 hours before the alert went out and 69 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: 1417 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 6.6

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
Mar 22, 7:39 PM CST	Mesoscale Discussion	SPC	Calhoun, Gadsden, Gulf, Jackson, Jefferson, Leon and 4 more	36 min
Mar 22, 11:37 PM CST	Mesoscale Discussion	SPC	Holmes	83 min
Mar 23, 1:17 AM CST	Mesoscale Discussion	SPC	Citrus, Flagler, Hernando, Lake, Marion, Orange and 7 more	118 min
Mar 23, 3:50 AM CST	Tornado Watch	SPC	Citrus, Hardee, Hernando, Hillsborough, Lake, Manatee and 9 more	6 hr
Mar 23, 5:21 AM CST	Mesoscale Discussion	SPC	Citrus, Hardee, Hernando, Hillsborough, Lake, Manatee and 9 more	114 min
Mar 23, 7:46 AM CST	Mesoscale Discussion	SPC	Broward, Charlotte, Citrus, Collier, DeSoto, Glades and 23 more	59 min
Mar 23, 9:46 AM CST	Mesoscale Discussion	SPC	Brevard, Broward, Charlotte, Collier, DeSoto, Glades and 11 more	29 min
Mar 23, 1:20 PM CST	Mesoscale Discussion	SPC	Broward, Charlotte, Collier, Glades, Hendry, Lee and 4 more	85 min
Mar 22, 6:24 PM CST	Mesoscale Discussion	SPC	Chatham	36 min
Mar 22, 9:36 PM CST	Mesoscale Discussion	SPC	Baker, Calhoun, Chattahoochee, Clay, Crawford, Dooly and 22 more	84 min
Mar 22, 10:11 PM CST	Mesoscale Discussion	SPC	Dade	2 hr
Mar 22, 11:30 PM CST	Tornado Watch	SPC	Baker, Bibb, Calhoun, Chattahoochee, Clay, Crawford and 27 more	7 hr
Mar 23, 12:35 AM CST	Tornado Watch	SPC	Baldwin, Butts, Carroll, Clarke, Clayton, Coweta and 29 more	7 hr
Mar 23, 2:11 AM CST	Mesoscale Discussion	SPC	Baker, Baldwin, Bibb, Butts, Calhoun, Carroll and 53 more	2 hr
Mar 23, 3:16 AM CST	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 36 more	89 min

Nearby

Mesoscale Discussions in Florida, 2005 Mesoscale Discussions in Georgia, 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.