Alert archive / Missouri / Mesoscale Discussions in 2004

Mesoscale Discussion 896

May 25, 20044 states

The Storm Prediction Center issued this mesoscale discussion at May 25, 2004, 2:39 PM CDT for 4 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: May 25, 2004, 2:39 PM CDT (19:39 UTC)
Expired: May 25, 2004, 4:15 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

All 55 counties

Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Carlisle County, KY, Crittenden County, KY, Daviess County, KY, Henderson County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dent County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, Oregon County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 97 km from the middle of the area, began a volume at 19:41 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 288May 25, 3:00 PM CDT

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 297 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: 951 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: -7 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.

124 
ACUS11 KWNS 251939
SWOMCD
SPC MCD 251939 
KYZ000-INZ000-ILZ000-MOZ000-252115-

MESOSCALE DISCUSSION 0896
NWS STORM PREDICTION CENTER NORMAN OK
0239 PM CDT TUE MAY 25 2004

AREAS AFFECTED...SERN MO EWD ACROSS FAR SRN IL/SWRN IND INTO WRN KY

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 251939Z - 252115Z

SEVERE TSTM POTENTIAL APPEARS TO BE INCREASING ACROSS THE AREA AND A
WW MAY BE REQUIRED.

BREAKS IN CIRRUS CANOPY HAVE ALLOWED FOR LOCALLY STRONG DIABATIC
HEATING THIS AFTERNOON FROM N OF UNO EWD INTO FAR SRN IL AND WRN KY.
WHEN COUPLED WITH DEWPOINTS IN THE LOWER 70S...AIRMASS HAS BECOME
VERY UNSTABLE WITH MLCAPES APPROACHING 3000 J/KG AND LITTLE OR NO
CONVECTIVE INHIBITION. LOCALIZED ASCENT ALONG COLD POOLS EMANATING
FROM TSTMS IN PROGRESS TO THE N ACROSS WW 286 SWWD INTO SWRN MO
SHOULD SUPPORT SWD TSTM DEVELOPMENT INTO DISCUSSION AREA OVER THE
NEXT 1 TO 2 HOURS.

PRESENCE OF RELATIVELY STRONG MID-LEVEL WIND FIELDS /I.E. 50-55KTS
AT 500 MB/ WILL SUPPORT SUPERCELL STRUCTURES WITH THE POTENTIAL FOR
LARGE HAIL AND DAMAGING WINDS.

..MEAD.. 05/25/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LMK...PAH...LSX...SGF...

37809160 37939146 38458717 37738707 36978707 36549154

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 8:15 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Hancock, Henderson, McDonough and 3 more	90 min
May 24, 10:26 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 36 more	64 min
May 24, 10:45 PM CDT	Tornado Watch	SPC	Bond, Brown, Calhoun, Cass, Champaign, Christian and 27 more	5 hr
May 24, 11:45 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Cass, Champaign, Christian, Clark and 24 more	90 min
May 25, 3:00 AM CDT	Severe Thunderstorm Watch	SPC	Champaign, Clark, Clay, Coles, Crawford, Cumberland and 15 more	3 hr
May 25, 9:19 AM CDT	Mesoscale Discussion	SPC	Edwards, Gallatin, Hamilton, Hardin, Lawrence, Pope and 4 more	86 min
May 25, 1:05 PM CDT	Severe Thunderstorm Watch	SPC	Bond, Calhoun, Christian, Clinton, Fayette, Greene and 12 more	6 hr
May 25, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Clay, Clinton, Crawford, Edwards, Franklin and 22 more	6 hr
May 25, 3:16 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clinton, Fayette, Greene and 12 more	89 min
May 25, 5:03 PM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Clay, Clinton, Crawford, Edwards and 25 more	87 min
May 25, 6:04 PM CDT	Mesoscale Discussion	SPC	Bond, Clinton, Madison, Monroe, Perry, Randolph and 2 more	56 min
May 25, 4:23 AM CDT	Mesoscale Discussion	SPC	Bartholomew, Blackford, Clark, Crawford, Dearborn, Decatur and 28 more	97 min
May 25, 4:02 PM CDT	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 16 more	58 min
May 25, 4:30 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Crawford, Dubois, Floyd, Greene, Harrison and 14 more	6 hr
May 24, 10:10 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Bates, Cass, Cedar, Dade, Henry and 6 more	6 hr
May 25, 12:00 AM CDT	Mesoscale Discussion	SPC	Barton, Bates, Cass, Cedar, Dade, Henry and 6 more	90 min
May 25, 2:17 AM CDT	Mesoscale Discussion	SPC	Barton, Bates, Cedar, Dade, Henry, Jasper and 3 more	118 min
May 25, 11:12 AM CDT	Mesoscale Discussion	SPC	Benton, Boone, Callaway, Camden, Cedar, Cole and 25 more	93 min

Nearby

Mesoscale Discussions in Missouri, 2004 Mesoscale Discussions in Illinois, 2004 Mesoscale Discussions in Kentucky, 2004 Every 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.