Alert archive / Nebraska / Tornado Watches in 2004

Tornado Watch 327

May 29, 20044 states

The Storm Prediction Center issued this tornado watch at May 29, 2004, 9:35 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 29, 2004, 9:35 PM CDT (02:35 UTC)
Expired: May 30, 2004, 4:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 120 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Ellsworth County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO, Adams County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Webster County, NE, York County, NE

The radar

The Topeka radar (KTWX), 122 km from the middle of the area, began a volume at 02:36 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

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

Issued	Product	Office	Counties	Lasted
May 29, 9:40 PM CDT	Severe Thunderstorm Warning	GID	Clay, Hamilton, Merrick, Nance	65 min
May 29, 9:43 PM CDT	Severe Thunderstorm Warning	GID	Osborne	32 min
May 29, 9:53 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Mitchell	67 min
May 29, 9:59 PM CDT	Flash Flood Warning	OAX	Nemaha	6 hr
May 29, 9:59 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Pawnee	46 min
May 29, 10:00 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, Polk, York	60 min
May 29, 10:03 PM CDT	Severe Thunderstorm Warning	ICT	Barton, Lincoln, Russell	87 min
May 29, 10:03 PM CDT	Flash Flood Warning	EAX	Atchison	6 hr
May 29, 10:04 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	56 min
May 29, 10:06 PM CDT	Flash Flood Warning	EAX	Daviess	8 hr
May 29, 10:06 PM CDT	Flash Flood Warning	GID	Nance	6 hr
May 29, 10:08 PM CDT	Severe Thunderstorm Warning	EAX	Gentry	67 min
May 29, 10:09 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Platte	66 min
May 29, 10:13 PM CDT	Flash Flood Warning	GID	Merrick	6 hr
May 29, 10:27 PM CDT	Tornado Warning	EAX	DeKalb	93 min
May 29, 10:28 PM CDT	Flash Flood Warning	OAX	Platte	6 hr
May 29, 10:32 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Seward	58 min
May 29, 10:34 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson, Saline	56 min
May 29, 10:37 PM CDT	Flash Flood Warning	EAX	Gentry, Harrison	12 hr
May 29, 10:41 PM CDT	Tornado Warning	EAX	Daviess, Harrison	94 min
May 29, 10:46 PM CDT	Severe Thunderstorm Warning	ICT	Ellsworth	89 min
May 29, 10:58 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Madison, Pierce	62 min
May 29, 11:22 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	38 min
May 29, 11:26 PM CDT	Severe Thunderstorm Warning	ICT	Lincoln	64 min
May 29, 11:32 PM CDT	Tornado Warning	EAX	Grundy	58 min
May 29, 11:42 PM CDT	Tornado Warning	ICT	Ellsworth	48 min
May 29, 11:43 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	32 min
May 29, 11:49 PM CDT	Tornado Warning	EAX	Mercer	56 min
May 29, 11:50 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	40 min
May 29, 11:58 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	47 min
May 30, 12:03 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	42 min
May 30, 12:04 AM CDT	Severe Thunderstorm Warning	ICT	Saline	86 min
May 30, 12:24 AM CDT	Severe Thunderstorm Warning	ICT	Ellsworth, Saline	96 min
May 30, 12:29 AM CDT	Severe Thunderstorm Warning	DMX	Decatur, Wayne	46 min
May 30, 12:30 AM CDT	Flash Flood Warning	EAX	Nodaway, Worth	12 hr
May 30, 12:35 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	55 min
May 30, 12:38 AM CDT	Severe Thunderstorm Warning	OAX	Mills	52 min
May 30, 12:40 AM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin, Story	50 min
May 30, 12:43 AM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson, Ottawa	47 min
May 30, 12:45 AM CDT	Severe Thunderstorm Warning	OAX	Sarpy	15 min
May 30, 12:53 AM CDT	Flash Flood Warning	EAX	Mercer	12 hr
May 30, 12:54 AM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	51 min
May 30, 1:07 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	53 min
May 30, 1:11 AM CDT	Severe Thunderstorm Warning	DMX	Cass	49 min
May 30, 1:17 AM CDT	Severe Thunderstorm Warning	DMX	Wayne	28 min
May 30, 1:17 AM CDT	Severe Thunderstorm Warning	TOP	Dickinson	43 min
May 30, 1:25 AM CDT	Severe Thunderstorm Warning	TOP	Brown	35 min
May 30, 2:05 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie	25 min
May 30, 2:16 AM CDT	Severe Thunderstorm Warning	DMX	Taylor	29 min
May 30, 2:26 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison	34 min
May 30, 2:44 AM CDT	Severe Thunderstorm Warning	DMX	Polk, Warren	46 min
May 30, 3:35 AM CDT	Flash Flood Warning	EAX	Buchanan, Clinton, DeKalb	8 hr

Discussions around it

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

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.6 hours before the alert went out and 145 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: 1892 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 300233
SEL7  
SPC WW 300235
IAZ000-KSZ000-MOZ000-NEZ000-300900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 327
NWS STORM PREDICTION CENTER NORMAN OK
935 PM CDT SAT MAY 29 2004

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTHWEST IOWA
       NORTH CENTRAL AND NORTHEAST KANSAS
       NORTHWEST MISSOURI
       CENTRAL AND EASTERN NEBRASKA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 935 PM UNTIL
400 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 140 STATUTE MILES EAST AND
WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF OMAHA NEBRASKA TO
35 MILES SOUTH OF MANHATTAN KANSAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 323...TORNADO WATCH NUMBER 326. WATCH NUMBER 323 326
WILL NOT BE IN EFFECT AFTER 935 PM CDT. CONTINUE...WW 321...WW
322...

DISCUSSION...ISOLATED TORNADIC SUPERCELLS WILL LIKELY PERSIST OVER
PARTS OF ERN NEB AND NWRN MO FOR A FEW HOURS AHEAD OF APPROACHING
COLD FRONT NOW MOVING INTO CENTRAL NEB.  EXPECT FRONT WILL IGNITE
INTENSE LINE OF STORMS...LIKELY EVOLVING INTO A BOW ECHO
SYSTEM...AND RACE ENEWD ACROSS WW OVERNIGHT WITH A THREAT OF EXTREME
WINDS. STRONG SLY LLJ WITHIN NOSE OF 40-50 KT MID LEVEL JET WILL
SUSTAIN AMPLE SHEAR FOR EMBEDDED SUPERCELLS AND POSSIBLE TORNADOES
AS WELL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 26040.


...EVANS

420,0924 383,0940 383,0991 420,0980

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 8:45 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Carroll, Cass, Crawford and 15 more	60 min
May 29, 9:21 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more	54 min
May 29, 11:23 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Carroll, Cass, Crawford and 13 more	67 min
May 30, 2:38 AM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Davis, Decatur, Jasper, Keokuk and 13 more	97 min
May 30, 9:40 AM CDT	Mesoscale Discussion	SPC	Appanoose, Davis, Lee, Van Buren	3 hr
May 30, 12:13 PM CDT	Mesoscale Discussion	SPC	Cedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 14 more	2 hr
May 30, 12:25 PM CDT	Tornado Watch	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 37 more	7 hr
May 30, 3:16 PM CDT	Mesoscale Discussion	SPC	Clinton, Des Moines, Dubuque, Jackson, Louisa, Muscatine and 1 more	119 min
May 29, 8:27 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Coffey, Cowley, Elk and 9 more	63 min
May 29, 9:45 PM CDT	Tornado Watch	SPC	Allen, Anderson, Barber, Bourbon, Butler, Chase and 25 more	6 hr
May 30, 10:50 AM CDT	Tornado Watch	SPC	Bourbon, Cherokee, Crawford, Linn	8 hr
May 30, 10:04 AM CDT	Mesoscale Discussion	SPC	Cape Girardeau, Mississippi, Perry, Scott	2 hr
May 30, 12:53 PM CDT	Mesoscale Discussion	SPC	Adair, Audrain, Barry, Benton, Boone, Callaway and 40 more	2 hr
May 30, 1:05 PM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more	6 hr
May 30, 2:44 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Christian, Crawford and 26 more	2 hr
May 30, 3:20 PM CDT	Tornado Watch	SPC	Dunklin, New Madrid, Pemiscot, Ripley	8 hr
May 30, 5:10 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more	95 min
May 30, 6:40 PM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Madison, Mississippi, New Madrid and 6 more	6 hr

Nearby

Tornado Watches in Nebraska, 2004 Tornado Watches in Iowa, 2004 Tornado Watches in Kansas, 2004 Every tornado 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.