Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >
Overview
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A potent disturbance embedded in southwest flow aloft produced strong thunderstorms which moved across eastern Utah and western Colorado on Thursday, October 4th. The unsettled weather began during the early morning hours when a storm produced quarter-sized hail in Palisade, Colorado around 3:30 AM MDT. Winds associated with thunderstorms throughout the day were very strong and even exceeded Category 1 hurricane strength at times. The peak wind gust on October 4th was 82 MPH which was recorded at the Rifle Garfield County Airport at 10:39 AM MDT. This resulted in some damaging winds with a single engine Cessna aircraft being tipped sideways onto a wing as well as onto its nose. Twenty minutes later, five trees, including two cottonwoods, were knocked down just northwest of Carbondale in Garfield County.
The wild weather that day also allowed the Grand Mesa to see its first snowfall of the season with some light accumulations on Highway 65. |
 Shelf Cloud Approaches NWS Grand Junction (Credit: Mike Charnick) |
Photos & Video:
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| Hail Accumulating on the Grand Mesa (Credit: Rue via KKCO11 News) |
First Snow on the Grand Mesa (Credit: CDOT) |
Radar:
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| Line of Storms Crossing Eastern Utah | Severe Storm Moving Through Grand Valley | Storms Moving Through Garfield County |
Storm Reports
Public Information Statement National Weather Service Grand Junction CO 731 AM MDT Fri Oct 5 2018 A cold front moved through eastern Utah and western Colorado on Thursday, October 4th. Scattered showers and thunderstorms accompanied the front with some storms becoming severe. These severe storms produced gusty outflow winds exceeding 58 MPH and hail almost three-quarters of an inch in diameter. ...HAIL REPORTS... Location Size Time/Date Provider ...Colorado... ...Delta County... Grand Mesa Lodge 0.70 in 1006 AM 10/04 Public Hotchkiss 4NW 0.25 in 1030 AM 10/04 Public Hotchkiss 6NW 0.25 in 1030 AM 10/04 Public ...Mesa County... Palisade 1.00 in 0330 AM 10/04 Public Loma 5NNW 0.25 in 0930 AM 10/04 Public Loma 0.25 in 0940 AM 10/04 Public ...Routt County... Steamboat Ski Resort 0.25 in 1207 PM 10/04 Public ...Utah... ...Grand County... Moab 1W 0.25 in 0815 AM 10/04 Public ...WIND REPORTS... Location Speed Time/Date Provider ...Colorado... ...Delta County... Jay, Hotchkiss 3NNW 70 MPH 1052 AM 10/04 RAWS ...Garfield County... Garfield County Rgnl AP 82 MPH 1041 AM 10/04 ASOS Rio Blanco 2ESE 81 MPH 1031 AM 10/04 CODOT Silt 1WSW 67 MPH 1054 AM 10/04 CODOT Douglas Pass 64 MPH 1005 AM 10/04 Dept of Highways Douglas Pass 62 MPH 0115 PM 10/04 CODOT Silt 61 MPH 1055 AM 10/04 Trained Spotter ...Mesa County... 1 WNW Fruita 65 MPH 0931 AM 10/04 Public 4 NE Cameo 61 MPH 1005 AM 10/04 Mesonet Mack 5NW 56 MPH 0922 AM 10/04 Trained Spotter Grand Jct. Redlands 45 MPH 0930 AM 10/04 Public Mesa 1.5W 40 MPH 1020 AM 10/04 Fire Dept/Rescue ...Utah... ...San Juan County... Valley of the Gods 42 MPH 0734 AM 10/04 CO-OP Observer ...RAINFALL REPORTS... Location Amount Time/Date Provider ...Colorado... ...Archuleta County... Sandoval Mesa, Arboles 7NE 0.07 in 0212 PM 10/04 RAWS 4 NE Arboles 0.04 in 0134 PM 10/04 RAWS Chimney Rock 4ENE 0.03 in 0221 PM 10/04 CWOP Pagosa Springs 15.0SSE 0.02 in 0900 AM 10/04 COCORAHS Pagosa Springs 1SE 0.02 in 0830 AM 10/04 COOP ...Delta County... Paonia 0.09 in 0159 PM 10/04 CWOP Cedaredge 1.0NE 0.09 in 0800 AM 10/04 COCORAHS Cedaredge 1.0NE 0.09 in 0800 AM 10/04 COCORAHS Whitewater 11SSE 0.08 in 0203 PM 10/04 CWOP Cedaredge 1NNW 0.08 in 0159 PM 10/04 CWOP Orchard City 0.05 in 0200 PM 10/04 USGS Paonia 2WSW 0.01 in 0200 PM 10/04 HADS ...Dolores County... Salter, Dolores 12NNW 0.04 in 0224 PM 10/04 RAWS ...Eagle County... Vail 19SSW 0.08 in 0229 PM 10/04 CWOP Avon 0.07 in 0235 PM 10/04 CWOP Eagle 13SSE 0.06 in 0225 PM 10/04 UCN Dowd Junction 0.05 in 0156 PM 10/04 RAWS Carbondale 5.7E 0.04 in 0750 AM 10/04 COCORAHS ...Garfield County... Glenwood Springs 0.07 in 0200 PM 10/04 HADS Glenwood Springs 0.07 in 0200 PM 10/04 HADS ...Gunnison County... Crested Butte 0.80 in 0214 PM 10/04 CODOT Taylor Park 0.05 in 0200 PM 10/04 COOP Mount Crested Butte 0.05 in 0224 PM 10/04 CWOP Taylor Park, Tincup 13NW 0.03 in 0157 PM 10/04 RAWS Crested Butte 0.03 in 0200 PM 10/04 HADS Sapinero 3ENE 0.03 in 0145 PM 10/04 HADS Gunnison 0.02 in 0800 AM 10/04 COCORAHS 8 NNW Iola 0.02 in 0119 PM 10/04 RAWS Almont 1WSW 0.01 in 0200 PM 10/04 HADS Gunnison 3WSW T in 0800 AM 10/04 COOP ...La Plata County... Vallecito 7NNE 0.09 in 0145 PM 10/04 USGS Durango 0.08 in 0800 AM 10/04 COCORAHS Big Bear Park 0.07 in 0155 PM 10/04 RAWS Bayfield 3ESE 0.05 in 0235 PM 10/04 CWOP Durango 7.1N 0.04 in 0745 AM 10/04 COCORAHS Ignacio 4NE 0.04 in 0145 PM 10/04 USGS 4 WNW Bayfield 0.04 in 0140 PM 10/04 RAWS 3 N Durango 0.02 in 0808 AM 10/04 COCORAHS Redmesa 3NW 0.02 in 0220 PM 10/04 CWOP Durango 0.01 in 0820 AM 10/04 COOP Durango 0.01 in 0820 AM 10/04 COOP ...Mesa County... Grand Jct. Redlands 0.32 in 0700 AM 10/05 Trained Spotter Palisade 0.32 in 0158 PM 10/04 CWOP Gateway 0.09 in 0900 AM 10/04 COOP 1 E Grand Junction 0.08 in 0230 PM 10/04 CWOP Collbran 0.06 in 0800 AM 10/04 UCOOP Fruitvale 0.06 in 0730 AM 10/04 COCORAHS Collbran 0.06 in 0800 AM 10/04 UCOOP Grand Junction Rgnl AP 0.05 in 1053 AM 10/04 ASOS Grand Junction Rgnl AP 0.05 in 1053 AM 10/04 ASOS Fruitvale 1W 0.04 in 0215 PM 10/04 CWOP ...Moffat County... Craig 2SE 0.68 in 0200 PM 10/04 GOES Ladore, Greystone 11NW 0.09 in 0223 PM 10/04 RAWS ...Montezuma County... Cortez Municipal Airport 0.08 in 1053 AM 10/04 ASOS Dolores 0.06 in 0228 PM 10/04 CWOP Mancos 3NW 0.06 in 0130 PM 10/04 HADS Morefield, Mancos 7WSW 0.06 in 0140 PM 10/04 RAWS Cortez 0.04 in 0215 PM 10/04 UPR Chapin Mesa 3N, M Verde NP 0.03 in 0230 PM 10/04 RAWS Yellow Jacket 1NW 0.03 in 0800 AM 10/04 COCORAHS ...Montrose County... 6 WSW Montrose 0.06 in 0825 AM 10/04 COCORAHS Black Canyon 0.05 in 0157 PM 10/04 RAWS Black Canyon 0.05 in 0157 PM 10/04 RAWS 7 SSW Olathe 0.04 in 0227 PM 10/04 CWOP Montrose Rgnl Airport 0.03 in 1053 AM 10/04 ASOS Olathe 1W 0.02 in 0158 PM 10/04 CWOP ...Ouray County... Ridgway 1NNW 0.07 in 0200 PM 10/04 HADS Ouray 3NNW 0.04 in 0215 PM 10/04 HADS Colona 2SSW 0.01 in 0215 PM 10/04 HADS Ridgway 0.01 in 0825 AM 10/04 COOP Camp Bird 2WNW T in 0215 PM 10/04 HADS ...Pitkin County... Aspen-Pitkin Cnty Airport 0.01 in 1053 AM 10/04 ASOS ...Rio Blanco County... Rangely 1E 1.23 in 0200 PM 10/04 COOP Buford 12WSW 0.06 in 1124 AM 10/04 RAWS ...Utah... ...San Juan County... Monticello 5SSE 0.08 in 0217 PM 10/04 CWOP Monticello no. 2 0.05 in 0740 AM 10/04 COOP ...Uintah County... Vernal 0.52 in 0220 PM 10/04 AWS Observations are collected from a variety of sources with varying equipment and exposures. We thank all volunteer weather observers for their dedication. Not all data listed are considered official.
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