Alert archive / Colorado / River Flood Warnings in 2017
River Flood Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this river flood warning at May 18, 2017, 1:23 PM MDT for Weld County, Colorado. It took effect at May 19, 2017, 10:00 AM MDT. It was in force for 30 hr.
The area
The outline as issued.
The facts
- Issued
- May 18, 2017, 1:23 PM MDT (19:23 UTC)
- In effect from
- May 19, 2017, 10:00 AM MDT
- Expired
- May 20, 2017, 4:00 PM MDT
- In force
- 30 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Flood severity
- Minor
County Weld County, CO
The radar
The Denver radar (KFTG), 60 km from the middle of the area, began a volume at 19:23 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.
The river
Written for the forecast point South Platte River near Kersey (KERC2).
- Action stage
- 8 ft
- Minor stage
- 10 ft
- Moderate stage
- 11.5 ft
- Major stage
- 13.5 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
661 WGUS45 KBOU 181923 FLWBOU BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 123 PM MDT Thu May 18 2017 ...The National Weather Service in Denver has issued a Flood Warning for the following rivers in Colorado... South Platte River near Kersey affecting Weld County. .The South Platte River near Kersey is forecast to rise above flood stage Friday morning. Light to moderate rain will continue this afternoon east of Interstate 25. The rain will taper off and transition to snow or a mix of rain and snow this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Warning means that flooding is imminent. All interested parties should take necessary precautions immediately. && COC123-200123- /O.NEW.KBOU.FL.W.0001.170519T1600Z-170520T2200Z/ /KERC2.1.ER.170519T1600Z.170520T0600Z.170520T1600Z.NO/ 123 PM MDT Thu May 18 2017 The National Weather Service in Denver has issued a * Flood Warning for the South Platte River near Kersey. * from Friday morning to Saturday afternoon. * At 12:30 PM Thursday the stage was 5.5 feet. * Flood stage is 10.0 feet. * Minor flooding is forecast. * Forecast...Rise above flood stage by Friday morning and continue to rise to near 10.8 feet late Friday night. The river will fall below flood stage Saturday. * Impact...At 10.0 feet...There is considerable lowland and meadow flooding. && LAT...LON 4030 10488 4043 10459 4031 10426 4027 10428 4040 10460 4026 10487 $$ th
3 follow-up statements
429 WGUS85 KBOU 182341 FLSBOU FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 541 PM MDT Thu May 18 2017 ...The Flood Warning continues for the following rivers in Colorado... South Platte River near Kersey affecting Weld County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the steep banks of rivers and streams. During a flood, saturated banks can easily break off and fall into potentially deadly, fast flowing flood waters. && COC123-200541- /O.CON.KBOU.FL.W.0001.170519T1600Z-170520T2200Z/ /KERC2.1.ER.170519T1600Z.170520T0600Z.170520T1600Z.NO/ 541 PM MDT Thu May 18 2017 The Flood Warning continues for the South Platte River near Kersey. * from Friday morning to Saturday afternoon...or until the stream falls below flood stage. * At 4:30 PM Thursday the stage was 6.2 feet. * Flood stage is 10.0 feet. * Minor flooding is forecast. * Forecast...Rise above flood stage by Friday morning. * Impact...At 10.0 feet...There is considerable lowland and meadow flooding. && LAT...LON 4030 10488 4043 10459 4031 10426 4027 10428 4040 10460 4026 10487 $$ th
117 WGUS85 KBOU 191049 FLSBOU FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 449 AM MDT Fri May 19 2017 ...The Flood Warning continues for the following rivers in Colorado... South Platte River near Kersey affecting Weld County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the steep banks of rivers and streams. During a flood, saturated banks can easily break off and fall into potentially deadly, fast flowing flood waters. && COC123-201649- /O.CON.KBOU.FL.W.0001.170519T1600Z-170520T2200Z/ /KERC2.1.ER.170519T1600Z.170520T0600Z.170520T1600Z.NO/ 449 AM MDT Fri May 19 2017 The Flood Warning continues for the South Platte River near Kersey. * from this morning to Saturday afternoon...or until the stream falls below flood stage. * At 4:30 AM Friday the stage was 8.6 feet. * Flood stage is 10.0 feet. * Minor flooding is forecast. * Forecast...Rise above flood stage by late this morning and continue to rise to near 10.8 feet by early Saturday morning. The river will fall below flood stage by Saturday morning. * Impact...At 11.5 feet...Southern sections of Hardin flood. There is moderate flooding of agricultural land along the river. && LAT...LON 4030 10488 4043 10459 4031 10426 4027 10428 4040 10460 4026 10487 $$
521 WGUS85 KBOU 191527 FLSBOU FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 927 AM MDT Fri May 19 2017 ...The Flood Warning is cancelled for the following rivers in Colorado... South Platte River near Kersey affecting Weld County. .The South Platte River near Kersey is no longer forecast to reach flood stage. The Flood Warning is being replaced by a Flood Advisory. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with interests along these rivers are urged to use caution. Avoid flooded areas and stay clear of river banks that could become unstable due to the high flows. && COC123-191557- /O.CAN.KBOU.FL.W.0001.000000T0000Z-170520T2200Z/ /KERC2.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/ 927 AM MDT Fri May 19 2017 The Flood Warning is cancelled for the South Platte River near Kersey. * At 8:30 AM Friday the stage was 9.1 feet. * Flood stage is 10.0 feet. * Forecast...The river is forecast to crest below flood stage at 9.5 feet this evening. * Impact...At 9.5 feet...Lowland and meadow flooding occurs. && LAT...LON 4030 10488 4043 10459 4031 10426 4027 10428 4040 10460 4026 10487 $$
What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this river flood warning went out at May 18, 11:32 AM MDT, 1 hour 51 minutes earlier.
Area forecast discussion, May 18, 11:32 AM MDT, 1 hour 51 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 1132 AM MDT Thu May 18 2017 .UPDATE... Issued at 1120 AM MDT Thu May 18 2017 Main highlights...Winter storm watch for the I-25 corridor has been upgraded a warning. Next, a winter weather advisory has been issued for the upper Colorado River zone 32 and South Park zone 37. Lastly, no change to the winter storm warning for the Front Range mtns and foothills, although storm total snow amounts have been increased by 4-8 inches as a rule, the greatest amounts over the higher terrain in Boulder and Larimer counties. Snowfall now enhancing on radar along the Front Range and Palmer Divide will likely continue to do so over the next couple of hours as this latest moderate to heavy snow band migrates slowly northward along the face of the foothills. If snowfall continues to intensify could see 1-2 inch per hour snowfall rates in lower areas along and west of I-25...and 2-3 1/2 inch per hour rates in the foothills from central Jefferson County northward. The Front Range mtns from Gilpin County northward could see local snowfall rates of 2-4 inches per hours today through this evening. Could see another 1 -2 feet of heavy wet snow on the east face of the mtns and another 3-7 inches in the urban corridor generally west of I-25 (higher amounts possible on the Palmer Divide) and 1-3 inches east of I-25. Farther out on the plains...precip still mainly rain where temps still in the upper 30s/lower 40s. Through the day as temps cool with the strong upper low moving closer to the area. Lastly heavy rainfall not expected to be as significant or as wide spread as earlier though with precip likely to stay snow most if not all day in and near the mtns. UPDATE Issued at 659 AM MDT Thu May 18 2017 Snow levels continue to lower with heavier precipitation and cold air damming in place. Have increased snow accumulations for the Denver area including the western and southern suburbs this morning where very heavy wet snow was falling. Will make a decision on tonight's Winter Storm Watch later today, but cold air already in place does not bode well for potential tree damage. && .SHORT TERM...(Today and tonight) Issued at 337 AM MDT Thu May 18 2017 ...Strong and slow moving spring storm with significant rain and snow through Friday... The spring storm is well underway with already 6 inches of snow reported in the foothills and averaging close to an inch of rain along the I-25 Corridor. Snow levels have dropped more than expected early this morning and already down to 6000 feet or a little lower per latest observations. Appears cold air damming is occurring with northwest winds along the I-25 corridor in the heavier precipitation, and warmer easterly winds across a good chunk of the plains. Rainfall rates will be increasing this morning and some snow will even mix in at times over portions of Denver, Douglas county, and near the Wyoming border. However, there should not be much of an accumulation threat except over the crest of the Palmer Divide where surface wet bulb temps are near 0C. Before we get to tonight, we'll discuss the heavy rain and heavy snow issues today. Increasing Q-G lift, a neutral to slightly unstable airmass, and stronger orographics across the forecast area will result in high precipitation efficiency. We should see rainfall rates increase to between one quarter and one third of an inch per hour in the heavier rain, with snowfall rates increasing to 2" per hour and locally heavier rates in the Front Range mountains and foothills. With the southeasterly flow, the heaviest precipitation is expected to occur across Larimer and Weld counties. Park county is also favored in this regime today, so added a Winter Weather Advisory there for periods of heavy snowfall through at least early afternoon. It should be noted that the cold air has driven farther southward early this morning as evidenced by the latest surface observations and snow levels. That may end up creating better lift farther south and a more easterly component through the day, thus keeping heavier precipitation closer to Denver and Boulder county than the Wyoming border. This will also keep snow levels lower than most model guidance, closer to 6500 feet through the afternoon. Winter Storm Warnings are in good shape for the Front Range Mountains and Foothills...see storm total details in Long Term Discussion. For tonight, there is still considerable variance in model output, but GFS and Canadian are siding toward a deeper/farther south low with stronger Q-G dynamics holding in place. Meanwhile, EC and NAM are taking a little farther northern track, and also may be handling the Central/Southern Plains severe weather outbreak better. If the GFS and Canadian verify, then strong TROWAL will develop across eastern Colorado with heavier precipitation rates continuing. On the other hand, if the convection and latent heat release on the Central/Southern Plains interferes with our storm, the some energy/moisture may shift further east. There will still be plenty of latest heat release centered over Colorado, so hard to say which is exactly right. A compromise seems reasonable. Finally, snow levels are still all over the place in the models ranging from near 4500 feet (NAM) to as high as 8000 feet (GFS). EC is a compromise but toward the lower end and around 5500 feet. In any case, based on trends with the first cold air surge we would lean toward colder guidance at this point. There's still considerable uncertainty however with QPF and also snow level so will keep the I-25 Corridor in a Winter Storm Watch for tonight and Friday. If the colder air arrives as expected tonight, could see 2-5" on vegetated surfaces down to around 5000 feet, with additional snowfall Friday morning. See the hydrology section below for expected liquid precipitation amounts and flooding concerns. .LONG TERM...(Friday through Wednesday) Issued at 337 AM MDT Thu May 18 2017 Confidence in the Friday forecast is less than average as differences in the upper low track and speed exist already at 12z between the models. Feel as though the latest 06z NAM is completely off as it places the low far south into northwestern Arizona. Will follow the GFS ensemble mean and a blend of the other models - which would take the the upper low from south- central Colorado slowly over northeast Colorado through the day. Good upslope flow over the northern mountains and foothills will continue to produce moderate to heavy snowfall Friday morning. Snowfall levels continue to be tough to pinpoint. Expecting it to be around 5200 early in the morning for a wet slushy snow for most of the urban corridor. Best dynamics and upslope should begin to decrease Friday afternoon for a decrease in precipitation rates, with a sharper decrease in the evening to shut rain and snow off from northwest to southeast. By Friday evening, storm total snow amounts are expected to be 1 to 3 feet over the mountains and foothills, with the highest values expected in Larimer and northern Boulder counties. Over the plains, the rain/snow line and subsequent snow amounts are still difficult to forecast at this point due the model differences. For now will expect 2 to 6 inches over the urban corridor with upwards of 8 to 12 inches near the foothills and Palmer Divide possible with a colder solution. As precipitation decreases Friday evening and should shut off overnight, snow will continue in the mountains as flow aloft turns northwesterly for good orographics. Saturday will be mostly dry and warmer, except for a few showers in the mountains in the northwest flow aloft. Sunday will see an increase in moisture but still warmer temperatures as a shortwave drops down in the northwest flow aloft. A stronger shortwave on Monday will bring keep temperatures the same and bring more widespread showers. Northwesterly flow aloft will continue through midweek to keep cooler than normal temperatures and showery weather due to several weak shortwaves. && .AVIATION...(For the 18Z TAFS through 18Z Friday afternoon) Issued at 1120 AM MDT Thu May 18 2017 Expanding band of moderate to heavy snowfall lifting north over the Denver Metro Area at this time already significantly impacting KAPA and KBJC. Only moments always from hitting KDEN. Expect this heavy snowfall to produce vsbys from 1/4 to 3/4 mile. Snowfall rates up an inch per hour will likely cover roads and runways with slush and/or snow. Looks like snowfall will diminish by around 1 pm this afternoon, but then increase again late this afternoon with deeper upslope flow. Should see additional snow accumulation overnight. As for winds, expected highly variable winds with the passing snow bands. But as a general rule, plan on south-southeast winds of 8-16 kts on the east side of the metro area today and north-northwest winds of 5-12 kts on the west side. && .HYDROLOGY... Issued at 337 AM MDT Thu May 18 2017 Overall forecast of 2-4 inch rainfall amounts is on track for the I-25 Corridor eastward toward Fort Morgan and Deer Trail, and see little need to adjust. Locally heavier amounts up to 5 inches or so would still be possible in Larimer/Weld counties especially if stronger and deeper GFS/Canadian verify. We coordinated with the River Forecast Center last evening and ran contingency models on the rivers for the higher end rainfall of 4 inches over 36 hours, and a few spots on the South Platte could reach or just exceed flood stage. There will not be much runoff from the foothills given the already low snow levels there. At this time, confidence is still pretty high that most hydrology issues for the rainfall will initially be minor flooding which would be handled by advisories today and tonight. We'll continue to diagnose the short term rainfall and runoff, and also the main stem rivers including the South Platte and Cache La Poudre as this event unfolds. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning until 6 PM MDT Friday for COZ033>036. Winter Storm Warning until 3 PM MDT Friday for COZ038>041. Winter Weather Advisory until 6 AM MDT Friday for COZ032-037. && UPDATE...Baker SHORT TERM...Barjenbruch LONG TERM...Kriederman AVIATION...Baker HYDROLOGY...Barjenbruch
Hazardous weather outlook, May 18, 11:54 AM MDT, 1 hour 29 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1154 AM MDT Thu May 18 2017 COZ030>051-191800- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1154 AM MDT Thu May 18 2017 ...Powerful Spring Storm System will Continue to Impact the Outlook Area Through Friday... This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Moderate to heavy snowfall will continue in the Front Range mountains and foothills and portions of the Interstate 25 corridor through most of Friday. Snowfall rates of 2 to 4 inches per hour are likely on the east facing mountain slopes and foothills, and 1 to 2 inches per at times across western portions of the I-25 urban corridor and Palmer Divide. This will produce slushy and snow covered roadways resulting in hazardous driving conditions, especially at elevations above 5500 feet. The higher mountain slopes in Boulder and Larimer counties could see 1 to 3 feet of snow by Friday morning. At lower elevations east of I-25, precipitation will mainly be rain or a mix of rain and snow today with locally up to an inch of rain possible with the heavier showers. Any snow accumulation will be light. The heavier rainfall could cause minor flooding of streets, underpasses, small streams, and low lying areas. River levels are expected to rise as runoff reaches the larger streams. The heavy wet snow will accumulate on leafed out trees causing limbs to break, and possibly cause scattered power outages. Freezing temperatures on the plains tonight could injure or kill tender plants. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Moderate to heavy snowfall is expected to continue over the mountains and foothills Friday morning, especially near Rocky Mountain National Park. Snowfall totals in the high country could range anywhere from 1 to 4 feet by Friday afternoon. Roads will continue to be snowpacked, and tree branches will still be threatened by the heavy snow and power outages may continue. Winter-like difficult travel will begin to ease by Friday afternoon and evening as snowfall rates decrease. At lower elevations, snow is expected to lower to near 5200 feet Friday morning, with 2 to 5 inches possible, though 9 to 18 inches isn't out of the question over the Palmer Divide and closer to the Foothills. Widespread rain across the rest of the plains will continue through the afternoon before tapering off. Low lying areas may be prone to localized flooding and rivers are expected to swell, do not try to cross flooded roads. This system will bring temperatures that are 20 to 30 degrees below normal for mid to late May. Low temperatures Friday night will likely be at or below freezing along the urban corridor. The mountains can expected scattered late day showers and thunderstorms on Saturday. An unsettle pattern returns Sunday through Tuesday with a chance of precipitation over much of the forecast area all three days. There could be a few late day thunderstorms as well. Wednesday dries out. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight. However, snow, heavy rainfall, and flooding reports will be appreciated. Baker/RJK
In the hours before
Local storm report, May 18, 8:37 AM MDT, 4 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
837 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0830 AM SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M14.4 INCH GILPIN CO TRAINED SPOTTER
0815 AM SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M10.0 INCH JEFFERSON CO TRAINED SPOTTER
0815 AM SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M2.0 INCH BOULDER CO TRAINED SPOTTER
0800 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0752 AM SNOW ROXBOROUGH PARK 39.44N 105.07W
05/18/2017 M2.5 INCH DOUGLAS CO PUBLIC
5,750 FEET
0745 AM SNOW CONIFER 39.52N 105.30W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0745 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M8.7 INCH JEFFERSON CO TRAINED SPOTTER
12 HOUR TOTAL. 1.7 INCHES IN THE PAST HOUR.
0745 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0745 AM SNOW 2 SSE TABERNASH 39.95N 105.84W
05/18/2017 M6.5 INCH GRAND CO TRAINED SPOTTER
STARTING TO STICK TO ROADS
0741 AM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M0.8 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
5 INCHES IN LAST 4 HOURS
0730 AM SNOW 1 W EVERGREEN 39.63N 105.36W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M6.4 INCH JEFFERSON CO TRAINED SPOTTER
APPROX 7,450 FT
0715 AM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M13.5 INCH BOULDER CO TRAINED SPOTTER
10 HOUR TOTAL. CURRENTLY SNOWING HEAVILY.
0704 AM SNOW 1 NE BRECKENRIDGE 39.52N 106.03W
05/18/2017 M11.5 INCH SUMMIT CO TRAINED SPOTTER
0700 AM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M3.0 INCH DOUGLAS CO TRAINED SPOTTER
0645 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M7.0 INCH JEFFERSON CO TRAINED SPOTTER
0640 AM SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M6.5 INCH PARK CO TRAINED SPOTTER
0630 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M8.0 INCH JEFFERSON CO CO-OP OBSERVER
0630 AM SNOW KEN CARYL 39.58N 105.11W
05/18/2017 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
0600 AM SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
0554 AM SNOW 3 N BLACK HAWK 39.84N 105.49W
05/18/2017 M11.3 INCH GILPIN CO TRAINED SPOTTER
0545 AM SNOW 1 S EVERGREEN 39.63N 105.34W
05/18/2017 M4.5 INCH JEFFERSON CO TRAINED SPOTTER
9 HOUR TOTAL. ROADS ARE SNOW COVERED.
0432 AM SNOW WARD 40.07N 105.51W
05/18/2017 M7.0 INCH BOULDER CO PUBLIC
0345 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M7.0 INCH BOULDER CO TRAINED SPOTTER
6 HOUR TOTAL
0345 AM SNOW 2 W ARAPAHOE PARK 39.64N 104.73W
05/18/2017 M1.0 INCH ARAPAHOE CO TRAINED SPOTTER
0315 AM HEAVY SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M6.0 INCH JEFFERSON CO TRAINED SPOTTER
6 HOUR TOTAL
1236 AM HEAVY RAIN LAFAYETTE 39.99N 105.10W
05/18/2017 M1.25 INCH BOULDER CO PUBLIC
1100 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/17/2017 M1.0 INCH BOULDER CO TRAINED SPOTTER
0842 PM HAIL E BRIGHTON 39.98N 104.79W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0840 PM HAIL 2 SSE WATTENBURG 39.99N 104.82W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0726 PM HEAVY RAIN 3 S EATON 40.48N 104.71W
05/17/2017 M1.96 INCH WELD CO TRAINED SPOTTER
0725 PM HAIL 1 ESE BOULDER 40.02N 105.23W
05/17/2017 M0.75 INCH BOULDER CO COCORAHS
&&
SULLIVANLocal storm report, May 18, 8:48 AM MDT, 4 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
848 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0830 AM SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M14.4 INCH GILPIN CO TRAINED SPOTTER
0830 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M10.0 INCH JEFFERSON CO CO-OP OBSERVER
0830 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M17.5 INCH BOULDER CO TRAINED SPOTTER
0815 AM SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M2.0 INCH BOULDER CO TRAINED SPOTTER
0815 AM SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M10.0 INCH JEFFERSON CO TRAINED SPOTTER
0815 AM SNOW 9 NE FOUR CORNERS 40.96N 105.79W
05/18/2017 M13.5 INCH LARIMER CO TRAINED SPOTTER
0800 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0752 AM SNOW ROXBOROUGH PARK 39.44N 105.07W
05/18/2017 M2.5 INCH DOUGLAS CO PUBLIC
5,750 FEET
0745 AM SNOW 2 SSE TABERNASH 39.95N 105.84W
05/18/2017 M6.5 INCH GRAND CO TRAINED SPOTTER
STARTING TO STICK TO ROADS
0745 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M8.7 INCH JEFFERSON CO TRAINED SPOTTER
12 HOUR TOTAL. 1.7 INCHES IN THE PAST HOUR.
0745 AM SNOW CONIFER 39.52N 105.30W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0745 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0741 AM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M0.8 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M6.4 INCH JEFFERSON CO TRAINED SPOTTER
APPROX 7,450 FT
0730 AM SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
5 INCHES IN LAST 4 HOURS
0730 AM SNOW 1 W EVERGREEN 39.63N 105.36W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0715 AM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M13.5 INCH BOULDER CO TRAINED SPOTTER
10 HOUR TOTAL. CURRENTLY SNOWING HEAVILY.
0704 AM SNOW 1 NE BRECKENRIDGE 39.52N 106.03W
05/18/2017 M11.5 INCH SUMMIT CO TRAINED SPOTTER
0700 AM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M3.0 INCH DOUGLAS CO TRAINED SPOTTER
0645 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M7.0 INCH JEFFERSON CO TRAINED SPOTTER
0640 AM SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M6.5 INCH PARK CO TRAINED SPOTTER
0630 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M8.0 INCH JEFFERSON CO CO-OP OBSERVER
0630 AM SNOW KEN CARYL 39.58N 105.11W
05/18/2017 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
0600 AM SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
0554 AM SNOW 3 N BLACK HAWK 39.84N 105.49W
05/18/2017 M11.3 INCH GILPIN CO TRAINED SPOTTER
0545 AM SNOW 1 S EVERGREEN 39.63N 105.34W
05/18/2017 M4.5 INCH JEFFERSON CO TRAINED SPOTTER
9 HOUR TOTAL. ROADS ARE SNOW COVERED.
0432 AM SNOW WARD 40.07N 105.51W
05/18/2017 M7.0 INCH BOULDER CO PUBLIC
0345 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M7.0 INCH BOULDER CO TRAINED SPOTTER
6 HOUR TOTAL
0345 AM SNOW 2 W ARAPAHOE PARK 39.64N 104.73W
05/18/2017 M1.0 INCH ARAPAHOE CO TRAINED SPOTTER
0315 AM HEAVY SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M6.0 INCH JEFFERSON CO TRAINED SPOTTER
6 HOUR TOTAL
1236 AM HEAVY RAIN LAFAYETTE 39.99N 105.10W
05/18/2017 M1.25 INCH BOULDER CO PUBLIC
1100 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/17/2017 M1.0 INCH BOULDER CO TRAINED SPOTTER
0842 PM HAIL E BRIGHTON 39.98N 104.79W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0840 PM HAIL 2 SSE WATTENBURG 39.99N 104.82W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0726 PM HEAVY RAIN 3 S EATON 40.48N 104.71W
05/17/2017 M1.96 INCH WELD CO TRAINED SPOTTER
0725 PM HAIL 1 ESE BOULDER 40.02N 105.23W
05/17/2017 M0.75 INCH BOULDER CO COCORAHS
&&
SULLIVANLocal storm report, May 18, 9:17 AM MDT, 4 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
917 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 AM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M10.2 INCH JEFFERSON CO TRAINED SPOTTER
0845 AM SNOW 2 ESE EVERGREEN 39.62N 105.31W
05/18/2017 M8.5 INCH JEFFERSON CO TRAINED SPOTTER
0830 AM SNOW 2 S PINE JUNCTION 39.44N 105.39W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
0830 AM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M12.1 INCH LARIMER CO COCORAHS
0830 AM SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M14.4 INCH GILPIN CO TRAINED SPOTTER
0830 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M17.5 INCH BOULDER CO TRAINED SPOTTER
0830 AM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M15.5 INCH GILPIN CO TRAINED SPOTTER
0830 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M10.0 INCH JEFFERSON CO CO-OP OBSERVER
0815 AM SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M10.0 INCH JEFFERSON CO TRAINED SPOTTER
0815 AM SNOW 9 NE FOUR CORNERS 40.96N 105.79W
05/18/2017 M13.5 INCH LARIMER CO TRAINED SPOTTER
0815 AM SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M2.0 INCH BOULDER CO TRAINED SPOTTER
0800 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0752 AM SNOW ROXBOROUGH PARK 39.44N 105.07W
05/18/2017 M2.5 INCH DOUGLAS CO PUBLIC
5,750 FEET
0745 AM SNOW 2 SSE TABERNASH 39.95N 105.84W
05/18/2017 M6.5 INCH GRAND CO TRAINED SPOTTER
STARTING TO STICK TO ROADS
0745 AM SNOW CONIFER 39.52N 105.30W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0745 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M8.7 INCH JEFFERSON CO TRAINED SPOTTER
12 HOUR TOTAL. 1.7 INCHES IN THE PAST HOUR.
0745 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0741 AM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M0.8 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 1 W EVERGREEN 39.63N 105.36W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
5 INCHES IN LAST 4 HOURS
0730 AM SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M6.4 INCH JEFFERSON CO TRAINED SPOTTER
APPROX 7,450 FT
0715 AM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M13.5 INCH BOULDER CO TRAINED SPOTTER
10 HOUR TOTAL. CURRENTLY SNOWING HEAVILY.
0704 AM SNOW 1 NE BRECKENRIDGE 39.52N 106.03W
05/18/2017 M11.5 INCH SUMMIT CO TRAINED SPOTTER
0700 AM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M3.0 INCH DOUGLAS CO TRAINED SPOTTER
0645 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M7.0 INCH JEFFERSON CO TRAINED SPOTTER
0640 AM SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M6.5 INCH PARK CO TRAINED SPOTTER
0630 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M8.0 INCH JEFFERSON CO CO-OP OBSERVER
0630 AM SNOW KEN CARYL 39.58N 105.11W
05/18/2017 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
0600 AM SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
0554 AM SNOW 3 N BLACK HAWK 39.84N 105.49W
05/18/2017 M11.3 INCH GILPIN CO TRAINED SPOTTER
0545 AM SNOW 1 S EVERGREEN 39.63N 105.34W
05/18/2017 M4.5 INCH JEFFERSON CO TRAINED SPOTTER
9 HOUR TOTAL. ROADS ARE SNOW COVERED.
0432 AM SNOW WARD 40.07N 105.51W
05/18/2017 M7.0 INCH BOULDER CO PUBLIC
0345 AM SNOW 2 W ARAPAHOE PARK 39.64N 104.73W
05/18/2017 M1.0 INCH ARAPAHOE CO TRAINED SPOTTER
0345 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M7.0 INCH BOULDER CO TRAINED SPOTTER
6 HOUR TOTAL
0315 AM HEAVY SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M6.0 INCH JEFFERSON CO TRAINED SPOTTER
6 HOUR TOTAL
1236 AM HEAVY RAIN LAFAYETTE 39.99N 105.10W
05/18/2017 M1.25 INCH BOULDER CO PUBLIC
1100 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/17/2017 M1.0 INCH BOULDER CO TRAINED SPOTTER
0842 PM HAIL E BRIGHTON 39.98N 104.79W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0840 PM HAIL 2 SSE WATTENBURG 39.99N 104.82W
05/17/2017 M0.88 INCH ADAMS CO TRAINED SPOTTER
0726 PM HEAVY RAIN 3 S EATON 40.48N 104.71W
05/17/2017 M1.96 INCH WELD CO TRAINED SPOTTER
0725 PM HAIL 1 ESE BOULDER 40.02N 105.23W
05/17/2017 M0.75 INCH BOULDER CO COCORAHS
&&
SULLIVANLocal storm report, May 18, 9:50 AM MDT, 3 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DENVER CO
950 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0915 AM HEAVY SNOW 5 ENE RUSTIC 40.73N 105.48W
05/18/2017 M10.0 INCH LARIMER CO EMERGENCY MNGR
POWER OUTAGE AT BEN DELATOUR BOY SCOUT RANCH
&&
SCHLATTERLocal storm report, May 18, 10:29 AM MDT, 2 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1029 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0958 AM HEAVY SNOW 1 NNE ESTES PARK 40.39N 105.51W
05/18/2017 M12.5 INCH LARIMER CO TRAINED SPOTTER
0930 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M18.0 INCH BOULDER CO TRAINED SPOTTER
0930 AM HEAVY SNOW 2 SSE BRECKENRIDGE 39.47N 106.03W
05/18/2017 M16.5 INCH SUMMIT CO TRAINED SPOTTER
SINCE 9PM 5/17
0916 AM HEAVY SNOW 1 NNE EVERGREEN 39.64N 105.33W
05/18/2017 M7.2 INCH JEFFERSON CO TRAINED SPOTTER
0915 AM HEAVY SNOW 5 ENE RUSTIC 40.73N 105.48W
05/18/2017 M10.0 INCH LARIMER CO EMERGENCY MNGR
POWER OUTAGE AT BEN DELATOUR BOY SCOUT RANCH
0845 AM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M10.2 INCH JEFFERSON CO TRAINED SPOTTER
0845 AM SNOW 2 ESE EVERGREEN 39.62N 105.31W
05/18/2017 M8.5 INCH JEFFERSON CO TRAINED SPOTTER
0830 AM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M12.1 INCH LARIMER CO COCORAHS
0830 AM SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M14.4 INCH GILPIN CO TRAINED SPOTTER
0830 AM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M15.5 INCH GILPIN CO TRAINED SPOTTER
0830 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M17.5 INCH BOULDER CO TRAINED SPOTTER
0830 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M10.0 INCH JEFFERSON CO CO-OP OBSERVER
0830 AM SNOW 2 S PINE JUNCTION 39.44N 105.39W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
0815 AM SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M2.0 INCH BOULDER CO TRAINED SPOTTER
0815 AM SNOW 9 NE FOUR CORNERS 40.96N 105.79W
05/18/2017 M13.5 INCH LARIMER CO TRAINED SPOTTER
0815 AM SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M10.0 INCH JEFFERSON CO TRAINED SPOTTER
0800 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0752 AM SNOW ROXBOROUGH PARK 39.44N 105.07W
05/18/2017 M2.5 INCH DOUGLAS CO PUBLIC
5,750 FEET
0745 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0745 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M8.7 INCH JEFFERSON CO TRAINED SPOTTER
12 HOUR TOTAL. 1.7 INCHES IN THE PAST HOUR.
0745 AM SNOW CONIFER 39.52N 105.30W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0745 AM SNOW 2 SSE TABERNASH 39.95N 105.84W
05/18/2017 M6.5 INCH GRAND CO TRAINED SPOTTER
STARTING TO STICK TO ROADS
0741 AM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M0.8 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
5 INCHES IN LAST 4 HOURS
0730 AM SNOW 1 W EVERGREEN 39.63N 105.36W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M6.4 INCH JEFFERSON CO TRAINED SPOTTER
APPROX 7,450 FT
0715 AM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M13.5 INCH BOULDER CO TRAINED SPOTTER
10 HOUR TOTAL. CURRENTLY SNOWING HEAVILY.
0704 AM SNOW 1 NE BRECKENRIDGE 39.52N 106.03W
05/18/2017 M11.5 INCH SUMMIT CO TRAINED SPOTTER
0700 AM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M3.0 INCH DOUGLAS CO TRAINED SPOTTER
0645 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M7.0 INCH JEFFERSON CO TRAINED SPOTTER
0640 AM SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M6.5 INCH PARK CO TRAINED SPOTTER
0630 AM SNOW KEN CARYL 39.58N 105.11W
05/18/2017 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
0630 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M8.0 INCH JEFFERSON CO CO-OP OBSERVER
0600 AM SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
0554 AM SNOW 3 N BLACK HAWK 39.84N 105.49W
05/18/2017 M11.3 INCH GILPIN CO TRAINED SPOTTER
0545 AM SNOW 1 S EVERGREEN 39.63N 105.34W
05/18/2017 M4.5 INCH JEFFERSON CO TRAINED SPOTTER
9 HOUR TOTAL. ROADS ARE SNOW COVERED.
0432 AM SNOW WARD 40.07N 105.51W
05/18/2017 M7.0 INCH BOULDER CO PUBLIC
0345 AM SNOW 2 W ARAPAHOE PARK 39.64N 104.73W
05/18/2017 M1.0 INCH ARAPAHOE CO TRAINED SPOTTER
0345 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M7.0 INCH BOULDER CO TRAINED SPOTTER
6 HOUR TOTAL
0315 AM HEAVY SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M6.0 INCH JEFFERSON CO TRAINED SPOTTER
6 HOUR TOTAL
1236 AM HEAVY RAIN LAFAYETTE 39.99N 105.10W
05/18/2017 M1.25 INCH BOULDER CO PUBLIC
1100 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/17/2017 M1.0 INCH BOULDER CO TRAINED SPOTTER
&&
SULLIVANLocal storm report, May 18, 11:59 AM MDT, 1 hour 24 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1159 AM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1116 AM SNOW 3 SSW DENVER 39.68N 104.98W
05/18/2017 E0.5 INCH DENVER CO TRAINED SPOTTER
LESS THAN AN INCH OF SNOW DURING PAST 2 HOURS
1103 AM HEAVY SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 E16.7 INCH GILPIN CO TRAINED SPOTTER
2.3 INCHES IN LAST 2.5 HOURS
1100 AM HEAVY SNOW WARD 40.07N 105.51W
05/18/2017 M21.0 INCH BOULDER CO PUBLIC
1049 AM HEAVY SNOW 3 NW IDLEDALE 39.70N 105.28W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
AGAIN SNOWING HEAVILY AFTER A LULL
1045 AM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 E18.0 INCH JEFFERSON CO TRAINED SPOTTER
18 TO 24 INCHES IN PAST 12 HOURS
0958 AM HEAVY SNOW 1 NNE ESTES PARK 40.39N 105.51W
05/18/2017 M12.5 INCH LARIMER CO TRAINED SPOTTER
0930 AM HEAVY SNOW 2 SSE BRECKENRIDGE 39.47N 106.03W
05/18/2017 M16.5 INCH SUMMIT CO TRAINED SPOTTER
SINCE 9PM 5/17
0930 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M18.0 INCH BOULDER CO TRAINED SPOTTER
0916 AM HEAVY SNOW 1 NNE EVERGREEN 39.64N 105.33W
05/18/2017 M7.2 INCH JEFFERSON CO TRAINED SPOTTER
0915 AM HEAVY SNOW 5 ENE RUSTIC 40.73N 105.48W
05/18/2017 M10.0 INCH LARIMER CO EMERGENCY MNGR
POWER OUTAGE AT BEN DELATOUR BOY SCOUT RANCH
0845 AM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M10.2 INCH JEFFERSON CO TRAINED SPOTTER
0845 AM SNOW 2 ESE EVERGREEN 39.62N 105.31W
05/18/2017 M8.5 INCH JEFFERSON CO TRAINED SPOTTER
0830 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M10.0 INCH JEFFERSON CO CO-OP OBSERVER
0830 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M17.5 INCH BOULDER CO TRAINED SPOTTER
0830 AM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M15.5 INCH GILPIN CO TRAINED SPOTTER
0830 AM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M12.1 INCH LARIMER CO COCORAHS
0830 AM SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M14.4 INCH GILPIN CO TRAINED SPOTTER
0830 AM SNOW 2 S PINE JUNCTION 39.44N 105.39W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
0815 AM SNOW 9 NE FOUR CORNERS 40.96N 105.79W
05/18/2017 M13.5 INCH LARIMER CO TRAINED SPOTTER
0815 AM SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M2.0 INCH BOULDER CO TRAINED SPOTTER
0815 AM SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M10.0 INCH JEFFERSON CO TRAINED SPOTTER
0800 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0752 AM SNOW ROXBOROUGH PARK 39.44N 105.07W
05/18/2017 M2.5 INCH DOUGLAS CO PUBLIC
5,750 FEET
0745 AM SNOW 2 SSE TABERNASH 39.95N 105.84W
05/18/2017 M6.5 INCH GRAND CO TRAINED SPOTTER
STARTING TO STICK TO ROADS
0745 AM SNOW CONIFER 39.52N 105.30W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0745 AM SNOW NEDERLAND 39.96N 105.50W
05/18/2017 M15.0 INCH BOULDER CO TRAINED SPOTTER
0745 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M8.7 INCH JEFFERSON CO TRAINED SPOTTER
12 HOUR TOTAL. 1.7 INCHES IN THE PAST HOUR.
0741 AM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M0.8 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M6.4 INCH JEFFERSON CO TRAINED SPOTTER
APPROX 7,450 FT
0730 AM SNOW 1 W EVERGREEN 39.63N 105.36W
05/18/2017 M12.0 INCH JEFFERSON CO PUBLIC
0730 AM SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
5 INCHES IN LAST 4 HOURS
0715 AM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M13.5 INCH BOULDER CO TRAINED SPOTTER
10 HOUR TOTAL. CURRENTLY SNOWING HEAVILY.
0704 AM SNOW 1 NE BRECKENRIDGE 39.52N 106.03W
05/18/2017 M11.5 INCH SUMMIT CO TRAINED SPOTTER
0700 AM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M3.0 INCH DOUGLAS CO TRAINED SPOTTER
0645 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M7.0 INCH JEFFERSON CO TRAINED SPOTTER
0640 AM SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M6.5 INCH PARK CO TRAINED SPOTTER
0630 AM SNOW KEN CARYL 39.58N 105.11W
05/18/2017 M3.0 INCH JEFFERSON CO TRAINED SPOTTER
0630 AM SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M8.0 INCH JEFFERSON CO CO-OP OBSERVER
0600 AM SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
0554 AM SNOW 3 N BLACK HAWK 39.84N 105.49W
05/18/2017 M11.3 INCH GILPIN CO TRAINED SPOTTER
0545 AM SNOW 1 S EVERGREEN 39.63N 105.34W
05/18/2017 M4.5 INCH JEFFERSON CO TRAINED SPOTTER
9 HOUR TOTAL. ROADS ARE SNOW COVERED.
0432 AM SNOW WARD 40.07N 105.51W
05/18/2017 M7.0 INCH BOULDER CO PUBLIC
0345 AM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M7.0 INCH BOULDER CO TRAINED SPOTTER
6 HOUR TOTAL
0345 AM SNOW 2 W ARAPAHOE PARK 39.64N 104.73W
05/18/2017 M1.0 INCH ARAPAHOE CO TRAINED SPOTTER
0315 AM HEAVY SNOW 4 SSE BROOKVALE 39.57N 105.40W
05/18/2017 M6.0 INCH JEFFERSON CO TRAINED SPOTTER
6 HOUR TOTAL
1236 AM HEAVY RAIN LAFAYETTE 39.99N 105.10W
05/18/2017 M1.25 INCH BOULDER CO PUBLIC
1100 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/17/2017 M1.0 INCH BOULDER CO TRAINED SPOTTER
&&
THThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 7:30 PM MDT | Areal Flood Advisory | BOU | Weld | 90 min |
| May 17, 7:53 PM MDT | Special Weather Statement | BOU | Weld | 52 min |
| May 17, 8:04 PM MDT | Special Weather Statement | BOU | Broomfield | 41 min |
| May 18, 3:19 AM MDT | Winter Weather Advisory | BOU | Grand, Park, Summit | 24 hr |
| May 18, 12:56 PM MDT | Areal Flood Advisory | BOU | Weld | 7 hr |
Nearby
River Flood Warnings in Colorado, 2017Every river flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.