Alert archive / Nebraska / Tornado Watches in 2000

Tornado Watch 770

October 29, 200035 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Oct 29, 2000, 11:45 AM CST for 35 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Oct 29, 2000, 11:45 AM CST (17:45 UTC)
Expired: Oct 29, 2000, 6:00 PM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 35 counties

Adams County, NE, Blaine County, NE, Boone County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Fillmore County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Loup 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, Saunders County, NE, Seward County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Wheeler County, NE, York County, NE

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Oct 29, 1:20 PM CST	Tornado Warning	GID	Adams, Clay	25 min
Oct 29, 2:27 PM CST	Severe Thunderstorm Warning	GID	Howard, Merrick, Nance	48 min
Oct 29, 3:12 PM CST	Severe Thunderstorm Warning	GID	Greeley, Nance	33 min
Oct 29, 3:47 PM CST	Severe Thunderstorm Warning	GID	Nance	28 min
Oct 29, 3:57 PM CST	Tornado Warning	OAX	Gage	33 min
Oct 29, 4:00 PM CST	Severe Thunderstorm Warning	OAX	Boone	60 min
Oct 29, 4:43 PM CST	Severe Thunderstorm Warning	OAX	Butler	47 min
Oct 29, 4:47 PM CST	Tornado Warning	OAX	Boone	33 min
Oct 29, 4:56 PM CST	Severe Thunderstorm Warning	OAX	Otoe	34 min
Oct 29, 5:00 PM CST	Severe Thunderstorm Warning	OAX	Boone	30 min
Oct 29, 5:01 PM CST	Tornado Warning	OAX	Butler, Seward	44 min
Oct 29, 5:07 PM CST	Tornado Warning	OAX	Otoe	23 min
Oct 29, 5:13 PM CST	Tornado Warning	OAX	Platte	32 min
Oct 29, 5:43 PM CST	Severe Thunderstorm Warning	OAX	Lancaster	47 min

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 5.8 hours before the alert went out and 164 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: 656 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 12 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.

048 
WWUS9 KMKC 291722
SEL0  

SEL0  
MKC WW 291716
NEZ000-300000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 770
STORM PREDICTION CENTER NORMAN OK
1116 AM CST SUN OCT 29 2000

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

   CENTRAL AND EASTERN NEBRASKA                           

EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1145 AM UNTIL 600 PM
CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 20 MILES NORTH NORTHEAST OF BURWELL NEBRASKA TO 20
MILES SOUTH SOUTHEAST OF BEATRICE NEBRASKA.

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.

DISCUSSION...LOW-TOPPED SUPERCELLS WITH THE ATTENDANT THREAT OF
TORNADOES EXPECTED TO CONTINUE DEVELOPING AHEAD OF EJECTING UPPER
LOW.  INSTABILITY AXIS SHOULD REMAIN CONFINED TO A NARROW ZONE
ACROSS WW...WITH MUCAPES AROUND 1000 J/KG.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 18035.

...CORFIDI/EVANS

420,0973 400,0951 400,0980 420,1002

Nearby

Tornado Watches in Nebraska, 2000 Every tornado watch in 2000

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.