Alert archive / Colorado / Freeze Warnings in 2017
Freeze Warning 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this freeze warning at May 19, 2017, 4:01 AM MDT for 12 counties in Colorado. It took effect at May 20, 2017, 2:00 AM MDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 19, 2017, 4:01 AM MDT (10:01 UTC)
- In effect from
- May 20, 2017, 2:00 AM MDT
- Expired
- May 20, 2017, 8:00 AM MDT
- In force
- 6 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO, Larimer County, CO, Lincoln County, CO, Morgan County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 8 km from the middle of the area, began a volume at 10:02 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 nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 10.0 hours before the alert went out and 119 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
- 562 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 167 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
096 WWUS75 KBOU 191001 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 401 AM MDT Fri May 19 2017 COZ038>046-191815- /O.NEW.KBOU.FZ.W.0002.170520T0800Z-170520T1500Z/ 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- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Agate, Hugo, Limon, and Matheson 401 AM MDT Fri May 19 2017 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM MDT SATURDAY... The National Weather Service in Denver has issued a Freeze Warning, which is in effect from 2 AM to 9 AM MDT Saturday. * TEMPERATURE...Lows dropping to or just below freezing in most areas, with colder temperatures in the upper 20s over the Palmer Divide. * IMPACTS...Tender vegetation and above ground outdoor sprinkler systems may be subject to damage if let unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation.Above ground outdoor sprinkler systems should be covered or drained to prevent damage. && $$
4 follow-up statements
241 WWUS75 KBOU 192141 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 341 PM MDT Fri May 19 2017 COZ044>046-192245- /O.CAN.KBOU.FZ.W.0002.170520T0800Z-170520T1500Z/ Morgan County-Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Including the cities of Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Agate, Hugo, Limon, and Matheson 341 PM MDT Fri May 19 2017 ...FREEZE WARNING IS CANCELLED... The National Weather Service in Denver has cancelled the Freeze Warning. Because of lingering cloud cover overnight, temperatures are no longer expected to fall below freezing for more than a couple hours in this area. Therefore, the freeze warning has been cancelled for Morgan County, central and eastern Adams and Arapahoe Counties, northern and eastern Elbert County, and Lincoln County. $$ COZ038>043-200545- /O.EXT.KBOU.FZ.W.0002.170520T0900Z-170520T1400Z/ 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- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, and Roggen 341 PM MDT Fri May 19 2017 ...FREEZE WARNING NOW IN EFFECT FROM 3 AM TO 8 AM MDT SATURDAY... * MINIMUM TEMPERATURE...Just below freezing for at least 3 hours late tonight, with the colder temperatures in the upper 20s on the Palmer Divide and in low lying river bottom areas. * IMPACTS...Tender vegetation and above ground outdoor sprinkler systems will be subject to damage if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. Above ground outdoor sprinkler systems should be covered or drained to prevent damage. && $$ Baker
014 WWUS75 KBOU 200246 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 846 PM MDT Fri May 19 2017 COZ038>043-201400- /O.CON.KBOU.FZ.W.0002.170520T0900Z-170520T1400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, and Roggen 846 PM MDT Fri May 19 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM MDT SATURDAY... * MINIMUM TEMPERATURE...Falling into the lower 30s. Colder temperatures into the upper 20s will be possible on the Palmer Divide and in low lying river bottom areas. * IMPACTS...Tender vegetation and above ground outdoor sprinkler systems will be subject to damage if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. Above ground outdoor sprinkler systems should be covered or drained to prevent damage. && $$
243 WWUS75 KBOU 201139 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 539 AM MDT Sat May 20 2017 COZ038>043-201400- /O.CON.KBOU.FZ.W.0002.000000T0000Z-170520T1400Z/ 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- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, and Roggen 539 AM MDT Sat May 20 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM MDT THIS MORNING... * TEMPERATURE...In the lower 30s, with upper 20s on the Palmer Divide. Temperatures will warm well above freezing by 8 AM. * IMPACTS...Tender vegetation and above ground outdoor sprinkler systems would be susceptible to damage if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. Above ground outdoor sprinkler systems should be covered or drained to prevent damage. && $$
748 WWUS75 KBOU 201356 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 756 AM MDT Sat May 20 2017 COZ038>043-201500- /O.EXP.KBOU.FZ.W.0002.000000T0000Z-170520T1400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County- Including the cities of Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, Parker, Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, and Roggen 756 AM MDT Sat May 20 2017 ...FREEZE WARNING WILL EXPIRE AT 8 AM MDT THIS MORNING... Low temperature readings reached 26 to 32 degrees earlier this morning across the urban corridor and adjacent plains. Temperatures will be warming through the rest of the day, with above freezing minimum temperatures expected through next week. $$
What forecasters said that day
The local office's own words before this freeze 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 freeze warning went out at May 19, 3:24 AM MDT, 37 minutes earlier.
Area forecast discussion, May 19, 3:24 AM MDT, 37 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 324 AM MDT Fri May 19 2017 .SHORT TERM...(Today and tonight) Issued at 324 AM MDT Fri May 19 2017 Storm system is winding down across the forecast area as energy did split as advertised in the NAM and ECMWF 24 hours ago. As a result, precipitation intensity had decreased significantly during the evening, with only light precipitation for the most part continuing early this morning. Exception was in the northern foothills and northern mountains where enough easterly flow was still producing locally heavier snowfall. However, this too will be decreasing through the early morning hours with orographic enhancement weakening. From Boulder and Denver southward to the Palmer Divide, have opted to cancel the Winter Storm Warning with additional accumulations expected to be an inch or less and little additional impact. Advisories for South Park and Middle Park also let go. Will continue the Winter Storm Warnings for the Front Range Mountains and Foothills with impacts including continued power outages and hazardous travel, but overall only expect light snow this morning (very little in the I-70 Corridor), and then heavier convective snow showers this afternoon. Looks like another 1 to 4 inches possible with most of that in the northern Front Range this morning, and then over the I-70 corridor of Summit County in the afternoon. Those Warnings may end up getting cancelled early too depending on how this evolves. There is a potential fly in the ointment with another wave of energy now taking shape near the CO/NM border early this morning. This feature will lift northeast across southeast Colorado, but increasing Q-G lift ahead of it will likely bring more widespread showers for the afternoon. At this point, we think the bulk of precipitation with this wave should end up east of the I-25 Corridor, but at the same time a weak surge may end up pushing it back into Denver. We will adjust PoPs accordingly to have higher PoPs again by this afternoon. Precipitation type will again be tricky, mainly snow along/west of a Greeley to Limon line this morning, but then some daytime heating and higher wet bulbs this afternoon may bring some rain all the way back to the I-25 Corridor. At the same time, heavier precipitation rates could lend itself to some light snow accumulation out toward Limon. For tonight, the upper level storm system will move eastward with subsidence and drying eventually building in. Lingering showers this evening will push east across the plains while ending along the Front Range during the evening. Some clearing late would likely allow temps to drop to or just below freezing, so will issue a freeze warning for the plains from the I-25 corridor eastward to Fort Morgan and Limon. May see some patchy fog develop as well in places that clear. .LONG TERM...(Saturday through Thursday) Issued at 324 AM MDT Fri May 19 2017 The upper level storm system will move into cntrl Nebraska on Sat. There still could be some light pcpn over far nern CO in the morning on the back side of the upper level low. Otherwise outside of a slight chc of showers in the mtns it will be dry with moderating temperatures. Aftn highs will be in the 55 to 60 degree range across the plains. On Sun an upper level trough in nwly flow aloft will affect the area Sun aftn thru Sun night. There is some wk mid lvl ascent associated with this feature along with quite a bit of moisture. In addition there will be a fnt moving into nern CO during the aftn with upslope flow developing. Overall should see a good chance of snow showers in the mtns Sun aftn into Sun evening with a chc of showers and a few tstms across the plains. Highs will be in the lower to mid 60s across nern CO. For Mon drier air in nnw flow aloft will be over the area thru the aftn with only a slight chc of showers in the mtns. Aftn highs will be in the 60s across the plains. Mon night into early Tue another disturbance embedded in the nnw flow will affect nrn CO with some mid lvl ascent. In addition another fnt will move across nern CO Mon evening which will enhance upslope flow. Thus will see a good chc of snow showers in the mtns with another chc of showers and a few tstms across the plains. By Tue aftn drier air will spread across the area as the disturbance moves se of the area. However there still could be a slight chc of showers across the higher terrain and plains. As for highs readings will be in the upper 50s to lower 60s across nern CO. On Wed dry nnw flow aloft will be over the area with no pcpn expected. Temperatures will be warmer as aftn highs rise into the upper 60s to lower 70s across the plains. By Thu the flow aloft will become more wly. There is some moisture embedded in the flow and will decent lapse rates will keep in a slight chc of showers/tstms over the higher terrain. Temperatures will continue to rise with highs in the 70s across nern CO. && .AVIATION...(For the 06Z TAFS through 06Z Friday night) Issued at 324 AM MDT Fri May 19 2017 IFR conditions will likely persist through the day with areas of light snow and rain, low ceilings, and light fog. There are a few breaks in the lower clouds near KBJC this morning, but may be short-lived. Light snow expected to produce no more than an inch of snow on elevated surfaces and at worst case a brief period of light slush on runways. By 00Z, showers should be tapering off and then expect ceilings to eventually lift 06Z-12Z. Patchy fog possible thereafter but mainly north of KDEN with light downsloping west/southwest developing for the Front Range airports. && .HYDROLOGY... Issued at 324 AM MDT Fri May 19 2017 Mainly light QPF amounts under one half inch expected through today. Rises are occurring on the South Platte downstream of Denver, and on the Cache La Poudre near Greeley. Flood Warning for the South Platte at Kersey remains in effect today with a forecast crest less than 1 foot above flood stage, but considerable lowland and meadow flooding expected along that stretch. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning until 6 PM MDT this evening for COZ033>036. Freeze Warning from 2 AM to 9 AM MDT Saturday for COZ038>046. Winter Storm Warning until noon MDT today for COZ038. && SHORT TERM...Barjenbruch LONG TERM...RPK AVIATION...Barjenbruch HYDROLOGY...Barjenbruch
Hazardous weather outlook, May 18, 11:54 AM MDT, 16 hours 7 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, 10:14 PM MDT, 5 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1014 PM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1011 PM HEAVY SNOW 2 SSE BRECKENRIDGE 39.47N 106.03W
05/18/2017 M8.5 INCH SUMMIT CO TRAINED SPOTTER
1000 PM SNOW 5 E BOULDER 40.03N 105.16W
05/18/2017 M6.5 INCH BOULDER CO TRAINED SPOTTER
0947 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M30.0 INCH JEFFERSON CO TRAINED SPOTTER
0940 PM HEAVY SNOW 2 W FORT COLLINS 40.56N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
SOME TREE BRANCHES UP TO 5 INCH DIAMETER BROKEN
0930 PM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M26.3 INCH GILPIN CO TRAINED SPOTTER
0920 PM HEAVY RAIN 3 W GREELEY 40.42N 104.80W
05/18/2017 M4.10 INCH WELD CO NWS EMPLOYEE
2.3 INCHES OF SNOW
0910 PM HEAVY SNOW 4 SSE PINECLIFFE 39.88N 105.39W
05/18/2017 M30.3 INCH JEFFERSON CO TRAINED SPOTTER
0855 PM SNOW 1 W MEAD 40.23N 105.01W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0855 PM HEAVY SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M9.0 INCH PARK CO TRAINED SPOTTER
0850 PM HEAVY SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M36.0 INCH BOULDER CO TRAINED SPOTTER
0850 PM HEAVY SNOW 1 SSW LAFAYETTE 39.99N 105.10W
05/18/2017 M6.0 INCH BOULDER CO TRAINED SPOTTER
0830 PM SNOW 2 SSW BOULDER 40.00N 105.27W
05/18/2017 M5.2 INCH BOULDER CO TRAINED SPOTTER
NATIONAL WEATHER SERVICE OFFICE
0815 PM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M31.0 INCH LARIMER CO PUBLIC
0800 PM SNOW 2 N LOVELAND 40.45N 105.07W
05/18/2017 M5.2 INCH LARIMER CO CO-OP OBSERVER
0800 PM HEAVY SNOW ASPEN SPRINGS 39.83N 105.48W
05/18/2017 M23.1 INCH GILPIN CO TRAINED SPOTTER
0730 PM HEAVY SNOW 2 SSE ESTES PARK 40.35N 105.51W
05/18/2017 M25.0 INCH LARIMER CO TRAINED SPOTTER
0711 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M28.0 INCH BOULDER CO TRAINED SPOTTER
0655 PM HEAVY SNOW 5 NE WARD 40.12N 105.44W
05/18/2017 M38.2 INCH BOULDER CO TRAINED SPOTTER
0648 PM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M17.7 INCH JEFFERSON CO TRAINED SPOTTER
0630 PM HEAVY SNOW 1 SE EVERGREEN 39.62N 105.33W
05/18/2017 M14.0 INCH JEFFERSON CO TRAINED SPOTTER
0625 PM SNOW 1 WSW BROOMFIELD 39.93N 105.08W
05/18/2017 M4.8 INCH BROOMFIELD CO NWS EMPLOYEE
SOME TREE DAMAGE MOSTLY MINOR
0615 PM HEAVY SNOW BROOKVALE 39.63N 105.42W
05/18/2017 E19.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M6.3 INCH LARIMER CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 NE FORT COLLINS 40.58N 105.04W
05/18/2017 M8.0 INCH LARIMER CO TRAINED SPOTTER
0535 PM SNOW 4 NNW CASTLE ROCK 39.43N 104.88W
05/18/2017 M5.0 INCH DOUGLAS CO TRAINED SPOTTER
0525 PM SNOW 2 W FREDERICK 40.10N 104.98W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0520 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M15.0 INCH LARIMER CO TRAINED SPOTTER
0515 PM HEAVY SNOW 1 SW EVERGREEN 39.62N 105.36W
05/18/2017 M7.5 INCH JEFFERSON CO TRAINED SPOTTER
0500 PM SNOW N LONGMONT 40.17N 105.11W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0500 PM HEAVY RAIN 2 SW BOULDER 40.01N 105.28W
05/18/2017 M3.11 INCH BOULDER CO CO-OP OBSERVER
4.8 INCHES OF SNOW MEASURED
0500 PM SNOW 4 S FORT COLLINS 40.50N 105.07W
05/18/2017 M5.0 INCH LARIMER CO TRAINED SPOTTER
SOME TREE DAMAGE WITH 1 TO 2 INCH DIAMETER BRANCHES
BROKEN
0450 PM HEAVY SNOW N ESTES PARK 40.37N 105.52W
05/18/2017 M21.0 INCH LARIMER CO TRAINED SPOTTER
0430 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M26.0 INCH JEFFERSON CO TRAINED SPOTTER
0410 PM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M4.8 INCH JEFFERSON CO PUBLIC
0358 PM SNOW NIWOT 40.10N 105.16W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0350 PM HEAVY SNOW 1 N LOUISVILLE 39.98N 105.14W
05/18/2017 M6.5 INCH BOULDER CO NWS EMPLOYEE
0341 PM HEAVY SNOW 2 NW SUPERIOR 39.95N 105.18W
05/18/2017 M7.5 INCH BOULDER CO TRAINED SPOTTER
0330 PM HEAVY RAIN 1 WNW GREELEY 40.43N 104.76W
05/18/2017 M3.80 INCH WELD CO TRAINED SPOTTER
2.5 INCHES OF SNOW HAS FALLEN
0300 PM HEAVY SNOW 3 SW FORT COLLINS 40.52N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
0300 PM HEAVY SNOW 12 NW GOLDEN 39.86N 105.38W
05/18/2017 M13.5 INCH JEFFERSON CO PUBLIC
0230 PM HEAVY RAIN GREELEY 40.42N 104.74W
05/18/2017 M3.40 INCH WELD CO TRAINED SPOTTER
PAST 23 HOURS
0220 PM HEAVY SNOW 5 W CONIFER 39.52N 105.39W
05/18/2017 E12.0 INCH JEFFERSON CO TRAINED SPOTTER
0200 PM HEAVY SNOW 3 W CONIFER 39.51N 105.36W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
0131 PM SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M4.0 INCH LARIMER CO TRAINED SPOTTER
0131 PM SNOW 3 SW LOVELAND 40.39N 105.11W
05/18/2017 M1.5 INCH LARIMER CO TRAINED SPOTTER
0130 PM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M6.0 INCH DOUGLAS CO BROADCAST MEDIA
0124 PM SNOW 1 WNW AURORA 39.71N 104.84W
05/18/2017 M2.0 INCH ARAPAHOE CO TRAINED SPOTTER
0100 PM HEAVY SNOW 2 S ESTES PARK 40.34N 105.52W
05/18/2017 M10.0 INCH LARIMER CO TRAINED SPOTTER
1251 PM HEAVY SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
1250 PM HEAVY RAIN 1 SE FREDERICK 40.09N 104.93W
05/18/2017 M2.95 INCH WELD CO NWS EMPLOYEE
1230 PM SNOW 3 S BOULDER 39.98N 105.25W
05/18/2017 M2.6 INCH BOULDER CO NWS EMPLOYEE
1225 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M9.0 INCH LARIMER CO TRAINED SPOTTER
1225 PM HEAVY SNOW 2 SE BOULDER 40.01N 105.22W
05/18/2017 M4.5 INCH BOULDER CO TRAINED SPOTTER
PAST 5 HOURS
1205 PM HEAVY SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M18.5 INCH GILPIN CO TRAINED SPOTTER
1200 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M21.0 INCH BOULDER CO TRAINED SPOTTER
1145 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M14.2 INCH JEFFERSON CO TRAINED SPOTTER
1130 AM HEAVY SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M13.9 INCH JEFFERSON CO TRAINED SPOTTER
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
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 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 SNOW 2 S PINE JUNCTION 39.44N 105.39W
05/18/2017 M9.0 INCH JEFFERSON 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 HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M12.1 INCH LARIMER CO COCORAHS
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 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
0745 AM SNOW CONIFER 39.52N 105.30W
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
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.
&&
JKLocal storm report, May 18, 11:11 PM MDT, 4 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1111 PM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1019 PM HEAVY SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M9.8 INCH BOULDER CO TRAINED SPOTTER
1011 PM HEAVY SNOW 2 SSE BRECKENRIDGE 39.47N 106.03W
05/18/2017 M8.5 INCH SUMMIT CO TRAINED SPOTTER
1000 PM SNOW 5 E BOULDER 40.03N 105.16W
05/18/2017 M6.5 INCH BOULDER CO TRAINED SPOTTER
0947 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M30.0 INCH JEFFERSON CO TRAINED SPOTTER
0940 PM HEAVY SNOW 2 W FORT COLLINS 40.56N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
SOME TREE BRANCHES UP TO 5 INCH DIAMETER BROKEN
0930 PM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M26.3 INCH GILPIN CO TRAINED SPOTTER
0920 PM HEAVY RAIN 3 W GREELEY 40.42N 104.80W
05/18/2017 M4.10 INCH WELD CO NWS EMPLOYEE
2.3 INCHES OF SNOW
0910 PM HEAVY SNOW 4 SSE PINECLIFFE 39.88N 105.39W
05/18/2017 M30.3 INCH JEFFERSON CO TRAINED SPOTTER
0855 PM HEAVY SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M9.0 INCH PARK CO TRAINED SPOTTER
0855 PM SNOW 1 W MEAD 40.23N 105.01W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0850 PM HEAVY SNOW 1 SSW LAFAYETTE 39.99N 105.10W
05/18/2017 M6.0 INCH BOULDER CO TRAINED SPOTTER
0850 PM HEAVY SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M36.0 INCH BOULDER CO TRAINED SPOTTER
0830 PM SNOW 2 SSW BOULDER 40.00N 105.27W
05/18/2017 M5.2 INCH BOULDER CO TRAINED SPOTTER
NATIONAL WEATHER SERVICE OFFICE
0815 PM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M31.0 INCH LARIMER CO PUBLIC
0800 PM HEAVY SNOW ASPEN SPRINGS 39.83N 105.48W
05/18/2017 M23.1 INCH GILPIN CO TRAINED SPOTTER
0800 PM SNOW 2 N LOVELAND 40.45N 105.07W
05/18/2017 M5.2 INCH LARIMER CO CO-OP OBSERVER
0730 PM HEAVY SNOW 2 SSE ESTES PARK 40.35N 105.51W
05/18/2017 M25.0 INCH LARIMER CO TRAINED SPOTTER
0711 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M28.0 INCH BOULDER CO TRAINED SPOTTER
0655 PM HEAVY SNOW 5 NE WARD 40.12N 105.44W
05/18/2017 M38.2 INCH BOULDER CO TRAINED SPOTTER
0648 PM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M17.7 INCH JEFFERSON CO TRAINED SPOTTER
0630 PM HEAVY SNOW 1 SE EVERGREEN 39.62N 105.33W
05/18/2017 M14.0 INCH JEFFERSON CO TRAINED SPOTTER
0625 PM SNOW 1 WSW BROOMFIELD 39.93N 105.08W
05/18/2017 M4.8 INCH BROOMFIELD CO NWS EMPLOYEE
SOME TREE DAMAGE MOSTLY MINOR
0615 PM HEAVY SNOW BROOKVALE 39.63N 105.42W
05/18/2017 E19.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0610 PM HEAVY SNOW 1 WNW FRASER 39.94N 105.82W
05/18/2017 M9.0 INCH GRAND CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 NE FORT COLLINS 40.58N 105.04W
05/18/2017 M8.0 INCH LARIMER CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M6.3 INCH LARIMER CO TRAINED SPOTTER
0535 PM SNOW 4 NNW CASTLE ROCK 39.43N 104.88W
05/18/2017 M5.0 INCH DOUGLAS CO TRAINED SPOTTER
0525 PM SNOW 2 W FREDERICK 40.10N 104.98W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0520 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M15.0 INCH LARIMER CO TRAINED SPOTTER
0515 PM HEAVY SNOW 1 SW EVERGREEN 39.62N 105.36W
05/18/2017 M7.5 INCH JEFFERSON CO TRAINED SPOTTER
0500 PM HEAVY RAIN 2 SW BOULDER 40.01N 105.28W
05/18/2017 M3.11 INCH BOULDER CO CO-OP OBSERVER
4.8 INCHES OF SNOW MEASURED
0500 PM SNOW 4 S FORT COLLINS 40.50N 105.07W
05/18/2017 M5.0 INCH LARIMER CO TRAINED SPOTTER
SOME TREE DAMAGE WITH 1 TO 2 INCH DIAMETER BRANCHES
BROKEN
0500 PM SNOW N LONGMONT 40.17N 105.11W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0450 PM HEAVY SNOW N ESTES PARK 40.37N 105.52W
05/18/2017 M21.0 INCH LARIMER CO TRAINED SPOTTER
0430 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M26.0 INCH JEFFERSON CO TRAINED SPOTTER
0410 PM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M4.8 INCH JEFFERSON CO PUBLIC
0358 PM SNOW NIWOT 40.10N 105.16W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0350 PM HEAVY SNOW 1 N LOUISVILLE 39.98N 105.14W
05/18/2017 M6.5 INCH BOULDER CO NWS EMPLOYEE
0341 PM HEAVY SNOW 2 NW SUPERIOR 39.95N 105.18W
05/18/2017 M7.5 INCH BOULDER CO TRAINED SPOTTER
0330 PM HEAVY RAIN 1 WNW GREELEY 40.43N 104.76W
05/18/2017 M3.80 INCH WELD CO TRAINED SPOTTER
2.5 INCHES OF SNOW HAS FALLEN
0300 PM HEAVY SNOW 3 SW FORT COLLINS 40.52N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
0300 PM HEAVY SNOW 12 NW GOLDEN 39.86N 105.38W
05/18/2017 M13.5 INCH JEFFERSON CO PUBLIC
0230 PM HEAVY RAIN GREELEY 40.42N 104.74W
05/18/2017 M3.40 INCH WELD CO TRAINED SPOTTER
PAST 23 HOURS
0220 PM HEAVY SNOW 5 W CONIFER 39.52N 105.39W
05/18/2017 E12.0 INCH JEFFERSON CO TRAINED SPOTTER
0200 PM HEAVY SNOW 3 W CONIFER 39.51N 105.36W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
0131 PM SNOW 3 SW LOVELAND 40.39N 105.11W
05/18/2017 M1.5 INCH LARIMER CO TRAINED SPOTTER
0131 PM SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M4.0 INCH LARIMER CO TRAINED SPOTTER
0130 PM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M6.0 INCH DOUGLAS CO BROADCAST MEDIA
0124 PM SNOW 1 WNW AURORA 39.71N 104.84W
05/18/2017 M2.0 INCH ARAPAHOE CO TRAINED SPOTTER
0100 PM HEAVY SNOW 2 S ESTES PARK 40.34N 105.52W
05/18/2017 M10.0 INCH LARIMER CO TRAINED SPOTTER
1251 PM HEAVY SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
1250 PM HEAVY RAIN 1 SE FREDERICK 40.09N 104.93W
05/18/2017 M2.95 INCH WELD CO NWS EMPLOYEE
1230 PM SNOW 3 S BOULDER 39.98N 105.25W
05/18/2017 M2.6 INCH BOULDER CO NWS EMPLOYEE
1225 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M9.0 INCH LARIMER CO TRAINED SPOTTER
1225 PM HEAVY SNOW 2 SE BOULDER 40.01N 105.22W
05/18/2017 M4.5 INCH BOULDER CO TRAINED SPOTTER
PAST 5 HOURS
1205 PM HEAVY SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M18.5 INCH GILPIN CO TRAINED SPOTTER
1200 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M21.0 INCH BOULDER CO TRAINED SPOTTER
1145 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M14.2 INCH JEFFERSON CO TRAINED SPOTTER
1130 AM HEAVY SNOW 3 N CONIFER 39.57N 105.31W
05/18/2017 M13.9 INCH JEFFERSON CO TRAINED SPOTTER
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
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 SNOW 2 ESE EVERGREEN 39.62N 105.31W
05/18/2017 M8.5 INCH JEFFERSON CO TRAINED SPOTTER
0845 AM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M10.2 INCH JEFFERSON 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 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 SNOW 3 WSW CONIFER 39.50N 105.35W
05/18/2017 M10.0 INCH JEFFERSON CO CO-OP OBSERVER
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
&&
JKLocal storm report, May 18, 11:43 PM MDT, 4 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1143 PM MDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1019 PM HEAVY SNOW 1 NNW LOUISVILLE 39.99N 105.15W
05/18/2017 M9.8 INCH BOULDER CO TRAINED SPOTTER
1011 PM HEAVY SNOW 2 SSE BRECKENRIDGE 39.47N 106.03W
05/18/2017 M8.5 INCH SUMMIT CO TRAINED SPOTTER
1000 PM HEAVY SNOW 2 NW SUPERIOR 39.95N 105.18W
05/18/2017 M10.0 INCH BOULDER CO TRAINED SPOTTER
2.5 INCHES IN LAST 7.5 HOURS.
1000 PM SNOW 5 E BOULDER 40.03N 105.16W
05/18/2017 M6.5 INCH BOULDER CO TRAINED SPOTTER
0947 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M30.0 INCH JEFFERSON CO TRAINED SPOTTER
0940 PM HEAVY SNOW 2 W FORT COLLINS 40.56N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
SOME TREE BRANCHES UP TO 5 INCH DIAMETER BROKEN
0930 PM HEAVY SNOW 4 SE ROLLINSVILLE 39.89N 105.63W
05/18/2017 M26.3 INCH GILPIN CO TRAINED SPOTTER
0920 PM HEAVY RAIN 3 W GREELEY 40.42N 104.80W
05/18/2017 M4.10 INCH WELD CO NWS EMPLOYEE
2.3 INCHES OF SNOW
0910 PM HEAVY SNOW 4 SSE PINECLIFFE 39.88N 105.39W
05/18/2017 M30.3 INCH JEFFERSON CO TRAINED SPOTTER
0855 PM HEAVY SNOW 3 N BAILEY 39.45N 105.46W
05/18/2017 M9.0 INCH PARK CO TRAINED SPOTTER
0855 PM SNOW 1 W MEAD 40.23N 105.01W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0850 PM HEAVY SNOW 1 SSW LAFAYETTE 39.99N 105.10W
05/18/2017 M6.0 INCH BOULDER CO TRAINED SPOTTER
0850 PM HEAVY SNOW 2 ESE ALLENSPARK 40.19N 105.48W
05/18/2017 M36.0 INCH BOULDER CO TRAINED SPOTTER
0830 PM SNOW 2 SSW BOULDER 40.00N 105.27W
05/18/2017 M5.2 INCH BOULDER CO TRAINED SPOTTER
NATIONAL WEATHER SERVICE OFFICE
0815 PM HEAVY SNOW ESTES PARK 40.37N 105.52W
05/18/2017 M31.0 INCH LARIMER CO PUBLIC
0800 PM HEAVY SNOW ASPEN SPRINGS 39.83N 105.48W
05/18/2017 M23.1 INCH GILPIN CO TRAINED SPOTTER
0800 PM SNOW 2 N LOVELAND 40.45N 105.07W
05/18/2017 M5.2 INCH LARIMER CO CO-OP OBSERVER
0730 PM HEAVY SNOW 2 SSE ESTES PARK 40.35N 105.51W
05/18/2017 M25.0 INCH LARIMER CO TRAINED SPOTTER
0711 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M28.0 INCH BOULDER CO TRAINED SPOTTER
0655 PM HEAVY SNOW 5 NE WARD 40.12N 105.44W
05/18/2017 M38.2 INCH BOULDER CO TRAINED SPOTTER
0648 PM HEAVY SNOW GENESEE 39.69N 105.27W
05/18/2017 M17.7 INCH JEFFERSON CO TRAINED SPOTTER
0630 PM HEAVY SNOW 1 SE EVERGREEN 39.62N 105.33W
05/18/2017 M14.0 INCH JEFFERSON CO TRAINED SPOTTER
0625 PM SNOW 1 WSW BROOMFIELD 39.93N 105.08W
05/18/2017 M4.8 INCH BROOMFIELD CO NWS EMPLOYEE
SOME TREE DAMAGE MOSTLY MINOR
0615 PM HEAVY SNOW BROOKVALE 39.63N 105.42W
05/18/2017 E19.0 INCH CLEAR CREEK CO TRAINED SPOTTER
0610 PM HEAVY SNOW 1 WNW FRASER 39.94N 105.82W
05/18/2017 M9.0 INCH GRAND CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 NE FORT COLLINS 40.58N 105.04W
05/18/2017 M8.0 INCH LARIMER CO TRAINED SPOTTER
0600 PM HEAVY SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M6.3 INCH LARIMER CO TRAINED SPOTTER
0535 PM SNOW 4 NNW CASTLE ROCK 39.43N 104.88W
05/18/2017 M5.0 INCH DOUGLAS CO TRAINED SPOTTER
0525 PM SNOW 2 W FREDERICK 40.10N 104.98W
05/18/2017 M4.0 INCH WELD CO TRAINED SPOTTER
0520 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M15.0 INCH LARIMER CO TRAINED SPOTTER
0515 PM HEAVY SNOW 1 SW EVERGREEN 39.62N 105.36W
05/18/2017 M7.5 INCH JEFFERSON CO TRAINED SPOTTER
0500 PM SNOW N LONGMONT 40.17N 105.11W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0500 PM SNOW 4 S FORT COLLINS 40.50N 105.07W
05/18/2017 M5.0 INCH LARIMER CO TRAINED SPOTTER
SOME TREE DAMAGE WITH 1 TO 2 INCH DIAMETER BRANCHES
BROKEN
0500 PM HEAVY RAIN 2 SW BOULDER 40.01N 105.28W
05/18/2017 M3.11 INCH BOULDER CO CO-OP OBSERVER
4.8 INCHES OF SNOW MEASURED
0450 PM HEAVY SNOW N ESTES PARK 40.37N 105.52W
05/18/2017 M21.0 INCH LARIMER CO TRAINED SPOTTER
0430 PM HEAVY SNOW 4 WSW ELDORADO SPRINGS 39.91N 105.34W
05/18/2017 M26.0 INCH JEFFERSON CO TRAINED SPOTTER
0410 PM SNOW 3 WNW ARVADA 39.85N 105.16W
05/18/2017 M4.8 INCH JEFFERSON CO PUBLIC
0358 PM SNOW NIWOT 40.10N 105.16W
05/18/2017 M3.0 INCH BOULDER CO TRAINED SPOTTER
0350 PM HEAVY SNOW 1 N LOUISVILLE 39.98N 105.14W
05/18/2017 M6.5 INCH BOULDER CO NWS EMPLOYEE
0341 PM HEAVY SNOW 2 NW SUPERIOR 39.95N 105.18W
05/18/2017 M7.5 INCH BOULDER CO TRAINED SPOTTER
0330 PM HEAVY RAIN 1 WNW GREELEY 40.43N 104.76W
05/18/2017 M3.80 INCH WELD CO TRAINED SPOTTER
2.5 INCHES OF SNOW HAS FALLEN
0300 PM HEAVY SNOW 12 NW GOLDEN 39.86N 105.38W
05/18/2017 M13.5 INCH JEFFERSON CO PUBLIC
0300 PM HEAVY SNOW 3 SW FORT COLLINS 40.52N 105.11W
05/18/2017 M7.5 INCH LARIMER CO TRAINED SPOTTER
0230 PM HEAVY RAIN GREELEY 40.42N 104.74W
05/18/2017 M3.40 INCH WELD CO TRAINED SPOTTER
PAST 23 HOURS
0220 PM HEAVY SNOW 5 W CONIFER 39.52N 105.39W
05/18/2017 E12.0 INCH JEFFERSON CO TRAINED SPOTTER
0200 PM HEAVY SNOW 3 W CONIFER 39.51N 105.36W
05/18/2017 M11.0 INCH JEFFERSON CO TRAINED SPOTTER
0131 PM SNOW 2 SW FORT COLLINS 40.53N 105.09W
05/18/2017 M4.0 INCH LARIMER CO TRAINED SPOTTER
0131 PM SNOW 3 SW LOVELAND 40.39N 105.11W
05/18/2017 M1.5 INCH LARIMER CO TRAINED SPOTTER
0130 PM SNOW 3 NE CASTLE ROCK 39.41N 104.81W
05/18/2017 M6.0 INCH DOUGLAS CO BROADCAST MEDIA
0124 PM SNOW 1 WNW AURORA 39.71N 104.84W
05/18/2017 M2.0 INCH ARAPAHOE CO TRAINED SPOTTER
0100 PM HEAVY SNOW 2 S ESTES PARK 40.34N 105.52W
05/18/2017 M10.0 INCH LARIMER CO TRAINED SPOTTER
1251 PM HEAVY SNOW 1 NNW EVERGREEN 39.65N 105.35W
05/18/2017 M9.0 INCH JEFFERSON CO TRAINED SPOTTER
1250 PM HEAVY RAIN 1 SE FREDERICK 40.09N 104.93W
05/18/2017 M2.95 INCH WELD CO NWS EMPLOYEE
1230 PM SNOW 3 S BOULDER 39.98N 105.25W
05/18/2017 M2.6 INCH BOULDER CO NWS EMPLOYEE
1225 PM HEAVY SNOW 4 WSW DRAKE 40.41N 105.40W
05/18/2017 M9.0 INCH LARIMER CO TRAINED SPOTTER
1225 PM HEAVY SNOW 2 SE BOULDER 40.01N 105.22W
05/18/2017 M4.5 INCH BOULDER CO TRAINED SPOTTER
PAST 5 HOURS
1205 PM HEAVY SNOW NNW ASPEN SPRINGS 39.84N 105.48W
05/18/2017 M18.5 INCH GILPIN CO TRAINED SPOTTER
1200 PM HEAVY SNOW 4 ENE NEDERLAND 39.99N 105.45W
05/18/2017 M21.0 INCH BOULDER CO TRAINED SPOTTER
1145 AM SNOW GENESEE 39.69N 105.27W
05/18/2017 M14.2 INCH JEFFERSON CO TRAINED SPOTTER
&&The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 8:45 AM MDT | River Flood Advisory | BOU | Weld | 31 hr |
| May 19, 9:59 AM MDT | River Flood Advisory | BOU | Weld | 44 hr |
| May 19, 9:59 AM MDT | River Flood Advisory | BOU | Morgan | 56 hr |
| May 19, 9:59 AM MDT | River Flood Advisory | BOU | Logan, Morgan, Washington | 70 hr |
Nearby
Freeze Warnings in Colorado, 2017Every freeze 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.