Alert archive / Missouri / Tornado Watches in 2002

Tornado Watch 535

July 26, 20024 states

The Storm Prediction Center issued this tornado watch at Jul 26, 2002, 5:00 PM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jul 26, 2002, 5:00 PM CDT (22:00 UTC)
Expired: Jul 26, 2002, 10:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 52 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Decatur County, IA, Fremont County, IA, Lucas County, IA, Mills County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wayne County, IA, Brown County, KS, Doniphan County, KS, Marshall County, KS, Nemaha County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO, Butler County, NE, Cass County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE

The radar

The Omaha radar (KOAX), 104 km from the middle of the area, began a volume at 22:01 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

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

Issued	Product	Office	Counties	Lasted
Jul 26, 6:20 PM CDT	Severe Thunderstorm Warning	OAX	Cass	25 min
Jul 26, 7:04 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Washington	26 min
Jul 26, 7:16 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	44 min
Jul 26, 7:26 PM CDT	Tornado Warning	OAX	Fremont	34 min
Jul 26, 7:30 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	30 min
Jul 26, 7:34 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	26 min
Jul 26, 7:36 PM CDT	Severe Thunderstorm Warning	EAX	Daviess	54 min
Jul 26, 7:53 PM CDT	Tornado Warning	EAX	Daviess	37 min
Jul 26, 7:57 PM CDT	Tornado Warning	OAX	Fremont, Page	33 min
Jul 26, 8:04 PM CDT	Severe Thunderstorm Warning	EAX	Holt	56 min
Jul 26, 8:17 PM CDT	Severe Thunderstorm Warning	EAX	Nodaway	58 min
Jul 26, 8:30 PM CDT	Severe Thunderstorm Warning	DMX	Taylor	60 min
Jul 26, 8:30 PM CDT	Severe Thunderstorm Warning	OAX	Page	30 min
Jul 26, 8:32 PM CDT	Tornado Warning	EAX	Daviess, Grundy	58 min
Jul 26, 8:58 PM CDT	Tornado Warning	DMX	Taylor	47 min
Jul 26, 8:58 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Gentry, Holt, Nodaway	62 min
Jul 26, 9:29 PM CDT	Severe Thunderstorm Warning	EAX	Grundy	61 min

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 104 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: 47 J/kg
Mixed-layer CIN: -422 J/kg
Mixed-layer LCL: 1924 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -119 m²/s²
0-3 km storm-relative helicity: -33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 262200
SEL5  
SPC WW 262200
IAZ000-KSZ000-MOZ000-NEZ000-270300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 535
STORM PREDICTION CENTER NORMAN OK
500 PM CDT FRI JUL 26 2002

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

   SOUTHERN IOWA                               
   NORTHEAST KANSAS                             
   NORTHERN MISSOURI                           
   SOUTHEAST NEBRASKA                           

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 35 MILES WEST NORTHWEST OF BEATRICE NEBRASKA
TO 50 MILES EAST NORTHEAST OF SPICKARD MISSOURI.

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...  CONTINUE...WW 534...

DISCUSSION...VERY UNSTABLE AIR MASS STRADDLES E/W BOUNDARY ALONG
MO/IA BORDER WWD.  WITH FAVORABLE VEERING SHEAR PROFILE AND
APPROACH OF MID LEVEL TROUGH...CONDITIONS FAVORABLE FOR RAPID
DEVELOPMENT OF SEVERE THUNDERSTORMS VICINITY OF E/W BOUNDARY. 
SUPERCELL DEVELOPMENT LIKELY ENHANCING WIND DAMAGE AND LARGE HAIL
POTENTIAL ALONG WITH ISOLATED TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. 
MEAN STORM MOTION VECTOR 25030.


...HALES

393,0925 393,0972 412,0972 412,0925

Nearby

Tornado Watches in Missouri, 2002 Tornado Watches in Nebraska, 2002 Tornado Watches in Iowa, 2002 Every tornado watch in 2002

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.