Alert archive / Nebraska / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 113, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Sep 6, 2006, 7:37 PM MDT for Dawes County, Nebraska. It was in force for 22 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 6, 2006, 7:37 PM MDT (01:37 UTC)
- Expired
- Sep 6, 2006, 7:59 PM MDT
- In force
- 22 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Dawes County, NE
The radar
The Rapid City radar (KUDX), 182 km from the middle of the area, began a volume at 01:39 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
Rapid City, SD (KUNR), launched 00:00Z, 1.6 hours before the alert went out and 175 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
- 64 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 3012 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 100 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 070137 SVRCYS NEC045-070200- /O.NEW.KCYS.SV.W.0113.060907T0137Z-060907T0200Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 737 PM MDT WED SEP 6 2006 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN DAWES COUNTY IN THE PANHANDLE OF NEBRASKA * UNTIL 800 PM MDT * AT 734 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 BELMONT...OR ABOUT 27 MILES SOUTHWEST OF CHADRON...AND MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL SOUTHERN DAWES COUNTY AT 750 PM MDT LAT...LON 4257 10316 4256 10346 4245 10347 4244 10306 $$ RUBIN
3 follow-up statements
000 WWUS55 KCYS 070142 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 742 PM MDT WED SEP 6 2006 NEC045-070200- /O.CON.KCYS.SV.W.0113.000000T0000Z-060907T0200Z/ DAWES NE- 742 PM MDT WED SEP 6 2006 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR SOUTHWESTERN DAWES COUNTY... AT 740 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12 MILES WEST OF BOX BUTTE DAM...OR ABOUT 28 MILES SOUTHWEST OF CHADRON...MOVING SOUTHEAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... 9 MILES WEST OF BOX BUTTE DAM BY 800 PM MDT... LAT...LON 4254 10315 4254 10340 4244 10341 4244 10306 $$ RUBIN
000 WWUS55 KCYS 070148 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 748 PM MDT WED SEP 6 2006 NEC045-070200- /O.CON.KCYS.SV.W.0113.000000T0000Z-060907T0200Z/ DAWES NE- 748 PM MDT WED SEP 6 2006 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR SOUTHWESTERN DAWES COUNTY... AT 746 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL... AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11 MILES WEST OF BOX BUTTE DAM...OR ABOUT 29 MILES SOUTHWEST OF CHADRON...MOVING SOUTHEAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... 9 MILES WEST OF BOX BUTTE DAM BY 800 PM MDT... LAT...LON 4254 10308 4252 10342 4244 10341 4244 10306 $$ RUBIN
000 WWUS55 KCYS 070159 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 759 PM MDT WED SEP 6 2006 NEC045-070209- /O.CAN.KCYS.SV.W.0113.000000T0000Z-060907T0200Z/ DAWES NE- 759 PM MDT WED SEP 6 2006 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DAWES COUNTY IS CANCELLED... THE SEVERE THUNDERSTORM HAS WEAKENED AND MOVED INTO BOX BUTTE COUNTY. LAT...LON 4254 10315 4254 10340 4244 10341 4244 10306 $$ 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 Sep 6, 7:05 PM MDT, 32 minutes earlier.
Area forecast discussion, Sep 6, 7:05 PM MDT, 32 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 705 PM MDT WED SEP 6 2006 .UPDATE...STRONG TSTMS OVER DAWES COUNTY IN NORTHERN NEBRASKA PANHANDLE SO ADDED HIGHER POPS THERE THIS EVENING...WILL LIKELY HAVE TO INCLUDE HIGHER POPS IN BOX BUTTE COUNTY SOON AS WELL. JLH && .PREV DISCUSSION... (ISSUED 105 PM MDT WED SEP 6 2006) SHORT TERM...TONIGHT THROUGH FRIDAY...BENIGN PATTERN CONTINUES WITH WEAK NW FLOW ALOFT AS CWA GENERALLY UNDER A RIDGE THROUGH THIS PERIOD. SFC PATTERN WILL HAVE HIGH OVER UTAH AND WESTERN WYOMING WITH TROFING ACROSS EASTERN WYOMING AND THE PANHANDLE. ANOTHER WARM DAY ON THURSDAY AND THEN SLIGHT COLD AIR ADVECTION INDICATED ON FRIDAY. NO WIDESPREAD PRECIPITATION EXPECTED BUT LOOKS LIKE YOU COULD NOT RULE OUT AFTERNOON AND EVENING CONVECTION THE NEXT TWO DAYS. LONG TERM...MODELS DIFFER ON THEIR SOLUTIONS FOR THIS PORTION OF THE FORECAST...ESPECIALLY FOR NEXT WEEK. WILL FOLLOW THE 00Z AND 06Z GFS FOR THIS PART OF THE FORECAST BASED ON RUN TO RUN CONTINUITY AS WELL AS NCEP PREFERENCE. THE GFS THROUGH THE WEEKEND HAS THE RIDGE AXIS ALOFT OVER THE NORTHERN ROCKIES WITH AN UPPER LOW MOVING ACROSS COLORADO THROUGH EARLY SATURDAY NIGHT. THE 12Z GFS IS SLOWER THAN ITS PREVIOUS RUNS WITH THE FEATURE. WITH THE ADDED MOISTURE AND LIFT...WILL INCREASE POPS AND CLOUD COVER OVER THE CWA...MAINLY THROUGH SATURDAY NIGHT. A SHALLOW COLD FRONT ALSO MOVES INTO THE EAST PART OF THE CWA SATURDAY FROM THE EAST WHICH WILL HAVE AN IMPACT ON TEMPERATURES AND POPS. FOR NEXT WEEK...THE RIDGE AXIS ALOFT REBUILDS BACK TO ALONG THE WEST COAST PER THE 06Z GFS AS A SHORTWAVE TROUGH MOVES ACROSS SOUTHERN CANADA. THAT IS WHERE MODEL DIFFERENCES TAKE PLACE. THE ECMWF AND DGEX PLACE AN UPPER LEVEL TROUGH ALONG THE WEST COAST...WITH THE ECMWF THEN MOVING THE SHORTWAVE INTO THE NORTHERN ROCKIES. EVEN THE 12Z RUN OF THE GFS NOW HAS A BROAD UPPER LEVEL TROUGH OVER THE REGION THROUGH TUESDAY NIGHT WHICH WOULD PRODUCE MORE CLOUDS...PRECIPITATION AND LOWER MAXIMUM TEMPERATURES. FOR NOW WILL FOLLOW THE PREVIOUS GFS RUNS WITH FAIRLY FAST NORTHWEST WIND FLOW ALOFT WILL BE OVER THE ROCKIES. BY MIDWEEK...THE 300MB JET WILL BE OVER THE CWA. A COLD FRONT BACKS INTO AT LEAST THE EAST PART OF THE CWA ON TUESDAY AND BECOMES STATIONARY THROUGH WEDNESDAY. BEHIND THE FRONT...THE GFS INCREASES THE BOUNDARY LAYER MOISTURE. FOR NOW WILL LIKELY TREND CLOUDS AND POPS UP FOR NEXT TUESDAY AND WEDNESDAY. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && SHORT TERM...GRIFFITH LONG TERM....WEILAND
Hazardous weather outlook, Sep 6, 9:43 AM MDT, 9 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 943 AM MDT WED SEP 6 2006 NEZ001>003-019>021-054-055-WYZ059>070-071545- SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL- CHEYENNE-CONVERSE-NIOBRARA-SOUTHWEST CARBON-NORTH CARBON- SNOWY RANGE-NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE- PLATTE-GOSHEN-CHEYENNE FOOTHILLS-PINE BLUFFS- 943 AM MDT WED SEP 6 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT A FEW AFTERNOON AND EVENING THUNDERSTORMS WILL BE POSSIBLE TODAY. ANY STORMS THAT DEVELOP ARE NOT EXPECTED TO BE SEVERE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A FEW LATE DAY THUNDERSTORMS WILL BE POSSIBLE EACH DAY THURSDAY THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. GRIFFITH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 9:45 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 59 min |
| Sep 6, 10:32 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 30 min |
| Sep 7, 3:02 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2006Every severe thunderstorm warning in 2006
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.