Alert archive / Nebraska / Tornado Watches in 2004

Tornado Watch 208

May 16, 200435 counties in Nebraska; 6 counties in South Dakota

The Storm Prediction Center issued this tornado watch at May 16, 2004, 4:45 PM CDT for 35 counties in Nebraska; 6 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 16, 2004, 4:45 PM CDT (21:45 UTC)
Expired
May 16, 2004, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 41 counties

Adams County, NE, Antelope County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Bon Homme County, SD, Clay County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Omaha radar (KOAX), 172 km from the middle of the area, began a volume at 21:46 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

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

IssuedProductOfficeCountiesLasted
May 16, 4:57 PM CDTSevere Thunderstorm WarningGIDBuffalo48 min
May 16, 5:10 PM CDTTornado WarningLBFHolt50 min
May 16, 5:23 PM CDTSevere Thunderstorm WarningGIDHoward37 min
May 16, 5:37 PM CDTSevere Thunderstorm WarningGIDSherman53 min
May 16, 5:44 PM CDTSevere Thunderstorm WarningGIDBuffalo31 min
May 16, 5:52 PM CDTTornado WarningGIDBuffalo23 min
May 16, 6:04 PM CDTTornado WarningLBFHolt41 min
May 16, 6:22 PM CDTTornado WarningGIDSherman38 min
May 16, 6:45 PM CDTTornado WarningLBFHolt30 min
May 16, 6:53 PM CDTTornado WarningGIDHoward37 min
May 16, 6:56 PM CDTTornado WarningGIDSherman34 min
May 16, 7:13 PM CDTTornado WarningLBFHolt17 min
May 16, 7:20 PM CDTTornado WarningGIDSherman40 min
May 16, 7:20 PM CDTTornado WarningOAXAntelope, Knox40 min
May 16, 7:22 PM CDTSevere Thunderstorm WarningOAXBoone38 min
May 16, 7:24 PM CDTTornado WarningGIDHoward36 min
May 16, 7:37 PM CDTTornado WarningGIDGreeley38 min
May 16, 8:01 PM CDTTornado WarningOAXKnox44 min
May 16, 8:12 PM CDTSevere Thunderstorm WarningOAXPlatte33 min
May 16, 8:25 PM CDTSevere Thunderstorm WarningOAXMadison, Stanton35 min
May 16, 9:04 PM CDTSevere Thunderstorm WarningOAXCuming26 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

Omaha, NE (KOAX), launched 12:00Z, 9.8 hours before the alert went out and 172 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2004-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2004-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1219 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
59 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.

900 
WWUS20 KWNS 162144
SEL8  
SPC WW 162145
NEZ000-SDZ000-170300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 208
NWS STORM PREDICTION CENTER NORMAN OK
445 PM CDT SUN MAY 16 2004

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

       CENTRAL AND NORTHEAST NEBRASKA
       SOUTHEAST SOUTH DAKOTA

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 445 PM UNTIL 1000
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 90 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 10 MILES SOUTHWEST OF BURWELL NEBRASKA TO 15
MILES SOUTH OF SIOUX CITY IOWA.

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 207...

DISCUSSION...SCATTERED SEVERE STORMS ARE DEVELOPING ACROSS CENTRAL
NEB IN THE VICINITY OF A WSW-ENE ORIENTED SURFACE FRONT AND
RAIN-COOLED BOUNDARY FROM EARLIER PRECIPITATION.  THE LOW LEVELS ARE
DESTABILIZING NWD ACROSS ERN NEB IN ADVANCE OF THIS CONVECTION...AND
VERTICAL SHEAR PROFILES APPEAR TO BE QUITE FAVORABLE FOR RIGHT
MOVING SUPERCELLS.  THE DEGREE OF LOW-LEVEL SHEAR AND AN INCREASE IN
SURFACE DEWPOINTS INTO THE UPPER 50S SHOULD SUPPORT SUPERCELLS WITH
THE POTENTIAL FOR A COUPLE OF TORNADOES.  OTHERWISE...LARGE HAIL AND
DAMAGING WINDS CAN BE EXPECTED WITH THESE STORMS THROUGH THE LATE
EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24035.


...THOMPSON

425,0991 432,0962 405,0962 402,0991

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 1:13 PM CDTMesoscale DiscussionSPCAntelope, Boyd, Brown, Cedar, Dakota, Dixon and 12 more2 hr
May 16, 3:02 PM CDTMesoscale DiscussionSPCChase, Dundy, Frontier, Furnas, Gosper, Hayes and 3 more88 min
May 16, 3:15 PM CDTTornado WatchSPCArthur, Buffalo, Chase, Custer, Dawson, Dundy and 14 more7 hr
May 16, 6:04 PM CDTMesoscale DiscussionSPCBuffalo, Custer, Dawson, Frontier, Furnas, Gosper and 9 more86 min
May 16, 6:45 PM CDTSevere Thunderstorm WatchSPCAdams, Clay, Fillmore, Franklin, Gage, Jefferson and 6 more4 hr
May 16, 6:55 PM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Boyd, Buffalo, Butler and 29 more2 hr

Nearby

Tornado Watches in Nebraska, 2004Tornado Watches in South Dakota, 2004Every 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.