Alert archive / Nebraska / Tornado Warnings in 2008

Tornado Warning 3, NWS Cheyenne, WY

April 23, 2008Morrill County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Apr 23, 2008, 5:34 PM MDT for Morrill County, Nebraska. It was in force for 26 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 23, 2008, 5:34 PM MDT (23:34 UTC)
Expired
Apr 23, 2008, 6:00 PM MDT
In force
26 min
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon

County Morrill County, NE

The radar

The Cheyenne radar (KCYS), 170 km from the middle of the area, began a volume at 23:36 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.

What was reported inside it

TimeReportWhereRemark
Apr 23, 5:52 PM MDTHAIL 0.757 S Bridgeport, NE
Apr 23, 5:52 PM MDTTORNADO7 S Bridgeport, NEMARBLE HAIL AND SOME TORBADO DAMAGE.
Apr 23, 6:00 PM MDTTORNADO6 S Bridgeport, NEIN OPEN FIELD NO DAMAGE ABOUT 2 MILES FROM HOUSE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 7, 12:52 PM MSTTornado WatchSPC146 days
Apr 23, 1:25 PM MDTTornado WatchSPC8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.6 hours before the alert went out and 203 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, N. Platte/Lee Bi, NE at 12:00Z on 2008-04-23Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2008-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 square meters per square second.193958Sfc1 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
1459 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
245 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.

000 
WFUS55 KCYS 232335
TORCYS
NEC123-240000-
/O.NEW.KCYS.TO.W.0003.080423T2334Z-080424T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
534 PM MDT WED APR 23 2008

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN MORRILL COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 600 PM MDT

* AT 531 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO ABOUT 6 MILES 
  SOUTHEAST OF BRIDGEPORT...OR NEAR MUD SPRINGS...OR 29 MILES NORTH
  OF SIDNEY...MOVING NORTH AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  BOX LAKE AND PETERSON LAKE BY 600 PM...

MOVE INTO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. ABANDON MOBILE HOMES AND VEHICLES.

THIS IS A DANGEROUS STORM ACT QUICKLY. IF YOU ARE IN THE PATH OF
THIS TORNADO MOVE TO THE LOWEST FLOOR OF A STURDY BUILDING.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4187 10298 4188 10270 4147 10272 4147 10315
TIME...MOT...LOC 2334Z 202DEG 26KT 4157 10303

$$

JLH
2 follow-up statements
000 
WWUS55 KCYS 232352
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
551 PM MDT WED APR 23 2008

NEC123-240000-
/O.CON.KCYS.TO.W.0003.000000T0000Z-080424T0000Z/
MORRILL NE-
551 PM MDT WED APR 23 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM MDT FOR EASTERN
MORRILL COUNTY...

AT 549 PM MDT...THE PUBLIC REPORTED TWO BRIEF TORNADO TOUCH DOWNS
ABOUT 5 TO 10 MILES SOUTHEAST OF BRIDGEPORT. THE THUNDERSTORM 
PRODUCING THE TORNADO WAS LOCATED 8 MILES NORTHWEST OF 
BROADWATER...OR 30 MILES SOUTH OF ALLIANCE...MOVING NORTH AT 30 MPH.

THE TORNADO WILL BE NEAR...
  BOX LAKE AND PETERSON LAKE BY 600 PM...

MOVE INTO A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. ABANDON MOBILE HOMES AND VEHICLES.

IN ADDITION TO THE THREAT OF A TORNADO...DAMAGING HAIL AND WIND CAN
BE EXPECTED. GO TO A SAFE PLACE NOW

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM WEDNESDAY EVENING FOR
CENTRAL NEBRASKA.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4187 10298 4188 10270 4147 10272 4147 10315
TIME...MOT...LOC 2351Z 202DEG 26KT 4168 10297

$$

JLH
000 
WWUS55 KCYS 232359
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
559 PM MDT WED APR 23 2008

NEC123-240009-
/O.EXP.KCYS.TO.W.0003.000000T0000Z-080424T0000Z/
MORRILL NE-
559 PM MDT WED APR 23 2008

...THE TORNADO WARNING FOR EASTERN MORRILL COUNTY WILL EXPIRE AT 600
PM MDT...

ALTHOUGH THE WARNING WILL BE ALLOWED TO EXPIRE...A NEW TORNADO 
WARNING WILL BE ISSUED REPLACING THE ORIGINAL TORNADO WARNING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM WEDNESDAY EVENING FOR
CENTRAL NEBRASKA.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
CHEYENNE AT 1-800-269-6220.

LAT...LON 4187 10298 4188 10270 4147 10272 4147 10315
TIME...MOT...LOC 2359Z 202DEG 26KT 4173 10294

$$

JLH

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 4:56 PM MDTSevere Thunderstorm WarningCYSMorrill49 min

Nearby

Tornado Warnings in Nebraska, 2008Every tornado warning in 2008Tornadoes in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.