Alert archive / Nebraska / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 95, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Sep 14, 2004, 5:14 PM MDT for Cheyenne County, Nebraska. It was in force for 46 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
- Sep 14, 2004, 5:14 PM MDT (23:14 UTC)
- Expired
- Sep 14, 2004, 6:00 PM MDT
- In force
- 46 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 145 km from the middle of the area, began a volume at 23:17 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 14, 2:20 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.2 hours before the alert went out and 154 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1028 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 202 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 142316 SVRCYS NEC033-150000- /X.NEW.KCYS.SV.W.0009.040914T2314Z-040915T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 514 PM MDT TUE SEP 14 2004 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL AND SOUTHERN CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA THIS INCLUDES THE CITY OF SIDNEY * UNTIL 600 PM MDT * AT 507 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 11 MILES NORTH OF MOUNT VERNON...OR ABOUT 18 MILES NORTHWEST OF SIDNEY...AND MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES NORTH OF BROWNSON BY 525 PM MDT GURLEY AND 9 MILES NORTH OF SIDNEY BY 530 PM MDT 8 MILES NORTH OF COLTON BY 540 PM MDT MILLER AIRSTRIP AND 8 MILES NORTH OF SUNOL BY 550 PM MDT A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT TUESDAY EVENING FOR THE SOUTHERN PANHANDLE OF NEBRASKA AND SOUTHEAST WYOMING. LAT...LON 4139 10332 4103 10330 4103 10271 4139 10272 $$ KMD
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 Sep 14, 1:32 PM MDT, 3 hours 42 minutes earlier.
Area forecast discussion, Sep 14, 1:32 PM MDT, 3 hours 42 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 132 PM MDT TUE SEP 14 2004 .SHORT TERM...IMPRESSIVE S/WV (SHORTWAVE) TROF MOVING EWRD ACROSS WY TODAY. NORTH-SOUTH ORIENTED LOW LEVEL CONVERGENCE BOUNDARY SETS UP ACROSS FAR ERN WY OR NEAR THE WY-NEB STATE LINE BY LATE AFTERNOON. WITH MORE THAN ADEQUATE WIND SHEAR (BOTH SPEED/DIRECTIONAL) AND BUOYANT ENERGY (CAPE)...EXPECT SCT-NUMEROUS TSTMS TO DEVELOP ALONG/EAST OF THE BOUNDARY THRU EVENING WITH SOME STORMS SEVERE...AIDED BY UVM (UPWARD VERTICAL MOTION) FROM S/WV TROF. TSTM COVERAGE LESSER WEST OF THE BOUNDARY DUE TO MORE LIMITED MOISTURE...BUT DYNAMICAL LIFT WILL OVERCOME LACK OF MOISTURE. TSTM COVERAGE WILL DECREASE QUICKLY AFTER 06Z IN SUBSIDENCE BEHIND S/WV TROF AND WITH STRONG DOWNSLOPE LOW/MID LEVEL WINDS. MORE TRANQUIL WEATHER EXPECTED ON WED AS DRY WLY ZONAL FLOW PREVAILS. NO TSTMS ON WED DUE TO LACK OF LOW/MID LEVEL MOISTURE. GUIDANCE TEMPS ACCEPTED. /RUBIN/ .LONG TERM...A DRIER AND MORE WESTERLY WIND FLOW ALOFT WILL BE OVER THE CWA THURSDAY AND FRIDAY. ON THOSE DAYS THE TEMPERATURES WILL BE BACK TO JUST ABOVE NORMAL VALUES AND THERE WILL BE BREEZY TO EVEN DAYTIME WINDY PERIODS. THE FLOW ALOFT TURNS MORE TO THE SOUTHWEST AHEAD OF THE UPSTREAM UPPER LEVEL TROUGH OVER THE WEEKEND...WITH CONDITIONS OVER THE CWA STILL MILD...BREEZY AND DRY. MODELS STILL ALL SHOW THE LARGE AMPLITUDE UPPER LEVEL TROUGH MOVING THROUGH THE CWA LATE SUNDAY NIGHT THROUGH MONDAY EVENING. THAT FEATURE WILL BRING THE NEXT THREAT OF PRECIPITATION TO THE REGION AS WELL AS COOLER TEMPERATURES. MODELS STILL DIFFER ON TIMING OF THE FEATURE WITH THE NOGAPS SLOWER AND SEEMING TO TREND SLOWER AND OTHER MODELS TRENDING FASTER. WILL FOLLOW THE FASTER TREND OF MOST OF THE MODELS FOR THIS FORECAST. THE ASSOCIATED COLD FRONT MOVES THROUGH THE CWA SUNDAY NIGHT...WITH THE COLD AIR ADVECTION AND DEVELOPING TIGHT SURFACE PRESSURE GRADIENT CAUSING STRONG WINDS THROUGH MONDAY. AS THE UPPER LEVEL TROUGH AXIS PASSES AND THE SURFACE LOW MOVES FURTHER AWAY...THE PRECIPITATION SHOULD DIMINISH MONDAY NIGHT. 700MB TEMPERATURES APPROACH 0C AND 1000 TO 500 MB THICKNESS VALUES LOWER TO WELL BELOW THE VALUES FOR SNOW MONDAY NIGHT. DEPENDING ON HOW FAST SKIES CLEAR MONDAY NIGHT AS THE SURFACE HIGH BUILDS IN...MANY LOCATIONS COULD BE IN THE 30S LATE MONDAY NIGHT AND TUESDAY MORNING. .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. WEILAND
Hazardous weather outlook, Sep 14, 9:33 AM MDT, 7 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 933 AM MDT TUE SEP 14 2004 NEZ001>003-019>021-054-055-WYZ059>070-151130- BANNER NE-BOX BUTTE NE-CHEYENNE NE-CHEYENNE FOOTHILLS WY-CONVERSE WY- DAWES NE-GOSHEN WY-KIMBALL NE-LARAMIE RANGE WY-LARAMIE VALLEY WY- MORRILL NE-NIOBRARA WY-NORTH CARBON WY-NORTH LARAMIE RANGE WY- PINE BLUFFS WY-PLATTE WY-SCOTTS BLUFF NE-SIOUX NE-SNOWY RANGE WY- SOUTHWEST CARBON WY- INCLUDING THE CITIES OF...ALLIANCE...CHADRON...CHEYENNE...DOUGLAS... KIMBALL...LARAMIE...LUSK...RAWLINS...SCOTTSBLUFF...SIDNEY... TORRINGTON AND WHEATLAND 933 AM MDT TUE SEP 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING AND THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING ACROSS FAR SOUTHEAST WYOMING AND THE SOUTHERN HALF OF THE WESTERN NEBRASKA PANHANDLE. LARAMIE...PLATTE AND GOSHEN COUNTIES ARE INCLUDED IN THE SLIGHT RISK AREA. A LOW LEVEL CONVERGENCE BOUNDARY WILL DEVELOP THIS AFTERNOON ACROSS FAR EASTERN WYOMING...NEAR THE WYOMING AND NEBRASKA STATE LINE. SCATTERED THUNDERSTORMS WILL DEVELOP ALONG THIS BOUNDARY THIS AFTERNOON AND CONTINUE INTO THE EVENING HOURS. SOME OF THESE THUNDERSTORMS THIS AFTERNOON AND EVENING MAY BECOME SEVERE...WITH THE PRIMARY THREATS BEING DIME SIZE HAIL OR LARGER...AND WIND GUSTS IN EXCESS OF 60 MPH. STORM MOVEMENT WILL BE EAST AT 25 MPH. OTHER SCATTERED THUNDERSTORMS WILL DEVELOP FURTHER WEST ACROSS WYOMING THIS AFTERNOON AND EVENING IN CONJUNCTION WITH AN APPROACHING WEATHER DISTURBANCE...BUT THE VAST MAJORITY OF THESE STORMS WILL BE NON-SEVERE...PRODUCING BRIEF HEAVY RAIN...WIND GUSTS TO 50 MPH AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING ACROSS FAR SOUTHEAST WYOMING AND PORTIONS OF THE WESTERN NEBRASKA PANHANDLE. RUBIN
In the hours before
Local storm report, Sep 14, 2:35 PM MDT, 2 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
235 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0223 PM HAIL 9 S MCGREW 41.62N 103.42W
09/14/2004 0.75 INCH BANNER NE CO-OP OBSERVER
&&
RUBINLocal storm report, Sep 14, 2:59 PM MDT, 2 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
259 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0245 PM HAIL 16 WNW HARRISBURG 41.64N 104.03W
09/14/2004 0.75 INCH BANNER NE PUBLIC
&&
RUBINLocal storm report, Sep 14, 3:05 PM MDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
305 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0300 PM HAIL BRIDGEPORT 41.67N 103.10W
09/14/2004 1.00 INCH MORRILL NE CO-OP OBSERVER
&&
RUBINLocal storm report, Sep 14, 3:26 PM MDT, 1 hour 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
326 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0315 PM HAIL 5 SE BRIDGEPORT 41.62N 103.03W
09/14/2004 1.00 INCH MORRILL NE CO-OP OBSERVER
&&
RUBINLocal storm report, Sep 14, 3:52 PM MDT, 1 hour 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
352 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0345 PM HAIL 12 ESE HARRISBURG 41.48N 103.53W
09/14/2004 1.75 INCH BANNER NE FIRE DEPT/RESCUE
&&
RUBINLocal storm report, Sep 14, 5:05 PM MDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
505 PM MDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0411 PM HAIL 6 W HARRISBURG 41.55N 103.86W
09/14/2004 1.00 INCH BANNER NE TRAINED SPOTTER
0420 PM HAIL 4 W HARRISBURG 41.55N 103.82W
09/14/2004 1.75 INCH BANNER NE CO-OP OBSERVER
0427 PM HAIL 11 SE REDINGTON 41.48N 103.15W
09/14/2004 1.00 INCH MORRILL NE CO-OP OBSERVER
0438 PM HAIL 12 SE BRIDGEPORT 41.54N 102.93W
09/14/2004 1.75 INCH MORRILL NE CO-OP OBSERVER
&&
RUBINThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 2:16 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Morrill | 59 min |
| Sep 14, 2:38 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 52 min |
| Sep 14, 3:26 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 49 min |
| Sep 14, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 50 min |
| Sep 14, 4:11 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 34 min |
| Sep 14, 4:40 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 50 min |
| Sep 14, 5:58 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 32 min |
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.