Alert archive / Mississippi / Mesoscale Discussions in 2004

Mesoscale Discussion 1694

July 15, 20046 states

The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2004, 5:18 PM CDT for 6 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Jul 15, 2004, 5:18 PM CDT (22:18 UTC)
Expired
Jul 15, 2004, 7:15 PM CDT
In force
117 min
Issued by
the Storm Prediction Center
All 105 counties

Baldwin County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Mobile County, AL, Monroe County, AL, Pike County, AL, Washington County, AL, Wilcox County, AL, Ashley County, AR, Chicot County, AR, Drew County, AR, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Escambia County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Madison County, FL, Nassau County, FL, Okaloosa County, FL, Santa Rosa County, FL, Suwannee County, FL, Union County, FL, Washington County, FL, Atkinson County, GA, Baker County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clay County, GA, Clinch County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Glynn County, GA, Grady County, GA, Lanier County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Pierce County, GA, Seminole County, GA, Thomas County, GA, Tift County, GA, Ware County, GA, Worth County, GA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Madison County, MS, Newton County, MS, Perry County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Warren County, MS, Washington County, MS, Wayne County, MS, Yazoo County, MS

The radar

The Mobile radar (KMOB), 138 km from the middle of the area, began a volume at 22:18 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 nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 10.3 hours before the alert went out and 183 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-pSkew-T log-p diagram, Eglin AFB/Valpar, FL at 12:00Z on 2004-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2319 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Eglin AFB/Valpar, FL at 12:00Z on 2004-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2319 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
38 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.

IssuedProductOfficeCountiesLasted
Jul 14, 8:16 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 31 more59 min
Jul 15, 10:08 AM CDTMesoscale DiscussionSPCHouston3 hr
Jul 15, 1:12 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Butler, Chilton, Choctaw, Clarke and 11 more2 hr
Jul 15, 2:20 PM CDTSevere Thunderstorm WatchSPCChoctaw, Mobile, Washington6 hr
Jul 15, 2:55 PM CDTMesoscale DiscussionSPCDale, Geneva, Henry, Houston2 hr
Jul 15, 3:10 PM CDTSevere Thunderstorm WatchSPCBarbour, Coffee, Covington, Crenshaw, Dale, Geneva and 3 more5 hr
Jul 14, 7:10 PM CDTSevere Thunderstorm WatchSPCCraighead, Crittenden, Cross, Greene, Lee, Mississippi and 3 more6 hr
Jul 14, 10:41 PM CDTMesoscale DiscussionSPCCraighead, Crittenden, Cross, Lee, Mississippi, Phillips and 2 more94 min
Jul 15, 4:45 PM CDTSevere Thunderstorm WatchSPCBenton, Bradley, Calhoun, Carroll, Clark, Cleveland and 36 more6 hr
Jul 14, 11:38 PM CDTMesoscale DiscussionSPCAttala, Carroll, Choctaw, Clay, Grenada, Holmes and 12 more97 min

Nearby

Mesoscale Discussions in Mississippi, 2004Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in Florida, 2004Every mesoscale discussion in 2004

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.