Alert archive / Nebraska / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 46, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 30, 2004, 7:11 PM MDT for Scotts Bluff County, Nebraska. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2004, 7:11 PM MDT (01:11 UTC)
- Expired
- Jun 30, 2004, 8:15 PM MDT
- In force
- 64 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 121 km from the middle of the area, began a volume at 01:14 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.2 hours before the alert went out and 227 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.
- Mixed-layer CAPE
- 6 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1436 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KCYS 010111 SVRCYS NEC157-010215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 711 PM MDT WED JUN 30 2004 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA THIS INCLUDES THE CITY OF SCOTTSBLUFF * UNTIL 815 PM MDT * AT 711 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR GERING...OR ABOUT OVER SCOTTSBLUFF...AND MOVING NORTHWEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SCOTTSBLUFF AND SCOTTS BLUFF NATIONAL MONUMENT BY 715 PM MDT MITCHELL BY 745 PM MDT MORRILL BY 805 PM MDT LAT...LON 4179 10371 4182 10357 4199 10366 4199 10397 $$ RUBIN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 1:40 PM MDT, 5 hours 31 minutes earlier.
Area forecast discussion, Jun 30, 1:40 PM MDT, 5 hours 31 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 140 PM MDT WED JUN 30 2004 .SHORT TERM...THE MOIST AND FAIRLY UNSTABLE AIRMASS OVER THE CWA WILL CONTINUE TO LIFTED TONIGHT AS THE SHORTWAVE TROUGH CURRENTLY IN COLORADO AND WESTERN WYOMING MOVES EAST. IN ADDITION A SURFACE LOW PRESSURE TROUGH EXTENDING INTO FAR SOUTHEAST WYOMING EARLY THIS AFTERNOON WILL MOVE SLOWLY EAST TONIGHT AND THURSDAY. WITH THE SLOW MOVEMENT OF THE THUNDERSTORMS THROUGH EARLY TONIGHT AND HIGH PRECIPITABLE WATER VALUES STILL EXPECT THAT THE MAIN THREAT WILL BE FROM HEAVY RAINFALL AND FREQUENT LIGHTNING. HAVE HELD OFF ON AN ISSUANCE OF A FLASH FLOOD WATCH FOR EARLY TONIGHT AS CLOUD COVER HAS KEPT STORMS LESS ENERGETIC IN THE WEST PART OF THE CWA AND FLASH FLOOD GUIDANCE VALUES ARE FAIRLY HIGH IN THE NORTH PART OF THE CWA. TOTAL AMOUNTS SHOULD BE UP TO AN INCH IN ALBANY AND CARBON COUNTIES AND UP TO 2 INCHES OVER THE REST OF THE CWA. AS THE SHORTWAVE TROUGH MOVES EAST THROUGH THURSDAY...DRIER AIR ON A MORE WESTERLY WIND WILL WORK FROM WEST TO EAST. THE FIRST AREAS TO IMPROVE WILL BE THE FAR WEST PART OF THE CWA AROUND 06Z. THE WESTERN NEBRASKA PANHANDLE WILL KEEP A SOUTHEAST BOUNDARY LAYER WIND THROUGH THURSDAY...WITH BETTER MOISTURE AND STEEPER LAPSE RATES. WILL KEEP A SCATTERED COVERAGE OF THUNDERSTORMS IN THE EAST PART OF THE CWA THURSDAY AFTERNOON...WITH LOWER POPS FURTHER TO THE WEST. LOWS TONIGHT SHOULD BE MILD AND A BIT WARMER THAN THOSE OF LAST NIGHT AND SHOULD BE SEVERAL DEGREES WARMER ON THURSDAY IN THE WEST PART OF THE CWA. WEILAND .LONG TERM...THU NGT AND BYND...UPR RDG STICKS AROUND THRU SAT MRNG FOR WARMER TEMPS AND NOT MUCH IN WAY OF LATE DAY TSTMS. ETA DOES SHOW SOME MORE MSTR ARND 500 MB SPRDG IN FRI AFTN/EVENG ALONG WITH SOME PCPN VS. DRY (YES DRY) GFS. WILL LEAN TWDS ETA SOLUTION FOR NOW WITH SLGT CHC OF LATE DAY STRMS FRI. RIDGE FLATTENS ON SAT INTO SUN WITH A MORE ZONAL FLOW. GFS HAS IS USUAL VORT MAX/PCPN BULLSEYES MOVING ACRS THE REGION...HARD TO PUT MUCH FAITH IN TIMING/LOCATION AT THIS TIME...WILL CONT WITH INHERITED IDEA OF 20-30% POPS FOR NOW THRU THE WEEKEND. S/WV TROF DRPG ESE INTO MT SUN NGT IS STGR ON THIS RUN THAN PRVS ONES...SO WILL NOT GO OFF THE DEEP END WITH ITS EFFECTS JUST YET. DIFFERENCES IN MED RANGE SOLUTIONS WITH THE HANDLING OF THIS TROF...ECMWF FASTER AND 00Z RUN GFS SLOWER...AS MUCH AS 24 HRS DIFFERENT. 06Z GFS EVIDENTLY LEANED MORE TWDS THE ECMWF AND SO THE PREEPD PREFERS TO LEAN WITH THE MORE PROGRESSIVE SOLUTION FOR NOW. CANT ARGUE WITH THAT FOR NOW...WITH CONTINUE WITH SOMEWHAT COOLER TMPS AND THE USUAL SLGT CHC OF LATE DAY STRMS. .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE.
Hazardous weather outlook, Jun 30, 10:40 AM MDT, 8 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1040 AM MDT WED JUN 30 2004 NEZ001>003-019>021-054-055-WYZ059>070-011200- BANNER-BOX BUTTE-CHEYENNE-CHEYENNE FOOTHILLS-CONVERSE-DAWES-GOSHEN- KIMBALL-LARAMIE RANGE-LARAMIE VALLEY-MORRILL-NIOBRARA-NORTH CARBON- NORTH LARAMIE RANGE-PINE BLUFFS-PLATTE-SCOTTS BLUFF-SIOUX- SNOWY RANGE-SOUTHWEST CARBON- INCLUDING THE CITIES OF...ALLIANCE...CHADRON...CHEYENNE...DOUGLAS... KIMBALL...LARAMIE...LUSK...RAWLINS...SCOTTSBLUFF...SIDNEY... TORRINGTON AND WHEATLAND 1040 AM MDT WED JUN 30 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEASTERN WYOMING AND THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER AND NEAR THE SNOWY RANGE AND SPREAD SLOWLY NORTH AND EAST THROUGH THE EVENING. THE ATMOSPHERE IS MOIST AND FAIRLY UNSTABLE AND STORMS WILL BE TRIGGERED BY AN UPPER LEVEL DISTURBANCE APPROACHING OUR AREA FROM THE SOUTH. DUE TO THE SLOW MOVEMENT OF THE STORMS AND LITLE WIND SHEAR...THE MAIN THREATS WILL BE HEAVY RAINFALL...FREQUENT LIGHTNING AND SMALL HAIL. RAINFALL AMOUNTS WILL GENERALLY BE AN INCH OR LESS IN ALBANY AND CARBON COUNTIES IN WYOMING AND UP TO 2 INCHES IN LOCAL AREAS IN OTHER PORTIONS OF SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. THE RAINFALL WILL CAUSE PONDING OF WATER ON ROADS...CITIES AND LOW LYING AREAS AND WILL CAUSE SOME STREAMS TO RISE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE WILL BE A CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON AND EVENING OVER SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. FEWER THUNDERSTORMS ARE EXPECTED FRIDAY AND SATURDAY WITH MOST OF THE ACTIVITY IN THE SNOWY AND LARAMIE RANGES AND FROM EAST CENTRAL WYOMING INTO FAR NORTHWEST NEBRASK PANHANDLE. SCATTERED LATE DAY THUNDERSTORMS RETURN TO MUCH OF THE AREA SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. WEILAND
In the hours before
Local storm report, Jun 30, 5:26 PM MDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
526 PM MDT WED JUN 30 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0515 PM HAIL CHADRON 42.83N 103.00W
06/30/2004 0.75 INCH DAWES NE LAW ENFORCEMENT
0520 PM HAIL 4 NE CHADRON 42.87N 102.94W
06/30/2004 0.75 INCH DAWES NE TRAINED SPOTTER
&&
GRIFFITHLocal storm report, Jun 30, 5:43 PM MDT, 1 hour 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
543 PM MDT WED JUN 30 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0519 PM HAIL 2 S CHEYENNE 41.12N 104.79W
06/30/2004 0.75 INCH LARAMIE WY PUBLIC
0525 PM HAIL 4 SE CHEYENNE 41.10N 104.74W
06/30/2004 0.75 INCH LARAMIE WY PUBLIC
&&
GRIFFITHLocal storm report, Jun 30, 5:58 PM MDT, 1 hour 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
558 PM MDT WED JUN 30 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0551 PM FLASH FLOOD CHADRON 42.83N 103.00W
06/30/2004 DAWES NE LAW ENFORCEMENT
WATER OVER MAIN ST CARS FLOATING ON WEST SIDE OF TOWN.
&&
GRIFFITHLocal storm report, Jun 30, 6:11 PM MDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
611 PM MDT WED JUN 30 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0606 PM FLASH FLOOD 5 S CHEYENNE 41.07N 104.79W
06/30/2004 LARAMIE WY EMERGENCY MNGR
FLOODING IN ORCHARD VALLEY. SOUTH GREELY HIGHWAY CLOSED.
&&
GRIFFITHThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 7:45 PM MDT | Flash Flood Warning | CYS | Dawes | 2 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2004Every severe thunderstorm warning 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.