Alert archive / Missouri / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 266

May 23, 2004Monroe County, Illinois; 30 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at May 23, 2004, 4:35 PM CDT for Monroe County, Illinois; 30 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 23, 2004, 4:35 PM CDT (21:35 UTC)
Expired: May 23, 2004, 10:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 31 counties

Monroe County, IL, Barry County, MO, Camden County, MO, Christian County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Newton County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 35 km from the middle of the area, began a volume at 21:38 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.

Warnings issued inside it

34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 23, 4:45 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Warren	60 min
May 23, 4:58 PM CDT	Severe Thunderstorm Warning	LSX	Osage	17 min
May 23, 5:07 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Laclede	23 min
May 23, 5:09 PM CDT	Severe Thunderstorm Warning	SGF	Dallas	36 min
May 23, 5:16 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Jasper, Lawrence	44 min
May 23, 5:32 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Laclede, Pulaski	43 min
May 23, 5:36 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Warren	39 min
May 23, 5:57 PM CDT	Severe Thunderstorm Warning	SGF	Polk	48 min
May 23, 5:58 PM CDT	Severe Thunderstorm Warning	SGF	Lawrence	47 min
May 23, 6:09 PM CDT	Tornado Warning	SGF	Phelps, Pulaski	36 min
May 23, 6:11 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, City of Saint Louis	49 min
May 23, 6:13 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, City of Saint Louis	47 min
May 23, 6:17 PM CDT	Flash Flood Warning	SGF	Lawrence	5 hr
May 23, 6:18 PM CDT	Severe Thunderstorm Warning	SGF	Laclede	27 min
May 23, 6:20 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	25 min
May 23, 6:31 PM CDT	Tornado Warning	SGF	Lawrence	44 min
May 23, 6:46 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Laclede, Phelps, Pulaski, Texas	44 min
May 23, 6:54 PM CDT	Tornado Warning	SGF	Christian, Stone	51 min
May 23, 6:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	48 min
May 23, 7:14 PM CDT	Severe Thunderstorm Warning	SGF	Lawrence	61 min
May 23, 7:18 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles	12 min
May 23, 7:31 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Shannon, Texas	44 min
May 23, 7:38 PM CDT	Severe Thunderstorm Warning	SGF	Newton	67 min
May 23, 7:42 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	48 min
May 23, 7:45 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Stone	60 min
May 23, 8:09 PM CDT	Flash Flood Warning	SGF	Newton	4 hr
May 23, 8:24 PM CDT	Severe Thunderstorm Warning	SGF	Barry	66 min
May 23, 8:28 PM CDT	Flash Flood Warning	SGF	Dent, Shannon, Texas	3 hr
May 23, 8:29 PM CDT	Severe Thunderstorm Warning	SGF	Lawrence	46 min
May 23, 8:38 PM CDT	Severe Thunderstorm Warning	SGF	Taney	82 min
May 23, 8:56 PM CDT	Severe Thunderstorm Warning	SGF	Newton	64 min
May 23, 9:26 PM CDT	Severe Thunderstorm Warning	SGF	Barry	49 min
May 23, 9:35 PM CDT	Severe Thunderstorm Warning	SGF	Stone	55 min
May 23, 9:51 PM CDT	Tornado Warning	SGF	Stone	39 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.6 hours before the alert went out and 82 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: 1106 J/kg
Mixed-layer CIN: -297 J/kg
Mixed-layer LCL: 780 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 359 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
May 22, 8:58 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 23 more	92 min
May 23, 12:24 AM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 32 more	66 min
May 23, 12:40 AM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more	5 hr
May 23, 1:21 AM CDT	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Greene, Jersey and 6 more	24 min
May 23, 1:40 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Brown, Cass, Fulton, Hancock, Logan and 8 more	4 hr
May 23, 4:30 AM CDT	Mesoscale Discussion	SPC	Adams, Boone, Brown, Bureau, Carroll, Cass and 44 more	60 min
May 23, 10:45 AM CDT	Tornado Watch	SPC	Clark, Clay, Coles, Crawford, Cumberland, Edgar and 19 more	5 hr
May 23, 12:25 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Calhoun, Carroll, Cass and 31 more	95 min
May 23, 12:45 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more	2 hr
May 23, 1:15 PM CDT	Tornado Watch	SPC	Adams, Brown, Calhoun, Cass, Fulton, Greene and 16 more	6 hr
May 23, 2:05 PM CDT	Tornado Watch	SPC	Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 18 more	8 hr
May 23, 2:53 PM CDT	Mesoscale Discussion	SPC	Iroquois, Vermilion	67 min
May 23, 3:50 PM CDT	Tornado Watch	SPC	Cook, DuPage, Iroquois, Kankakee, Vermilion, Will	6 hr
May 23, 5:00 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 28 more	2 hr
May 23, 5:10 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 17 more	95 min
May 23, 5:30 PM CDT	Tornado Watch	SPC	Bond, Calhoun, Christian, Clark, Clay, Clinton and 29 more	6 hr
May 23, 6:30 PM CDT	Mesoscale Discussion	SPC	Cook, DuPage, Iroquois, Kankakee, Vermilion, Will	2 hr
May 22, 7:11 PM CDT	Mesoscale Discussion	SPC	Atchison	94 min
May 22, 10:40 PM CDT	Tornado Watch	SPC	Andrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 8 more	5 hr
May 22, 11:33 PM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 7 more	87 min
May 23, 2:21 AM CDT	Mesoscale Discussion	SPC	Adair, Andrew, Buchanan, Caldwell, Clinton, Daviess and 11 more	54 min

Nearby

Severe Thunderstorm Watches in Missouri, 2004 Severe Thunderstorm Watches in Illinois, 2004 Every severe thunderstorm watch 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.