Heavy snow developed in and near the Front Range Foothills and Palmer Divide as an upper level trough made its way across southern Colorado. Snowfall was enhanced locally with the presence of an upper level jet.
Every event with a place to put it; 5 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOU wrote it up.
Heavy snow developed in and near the Front Range Foothills and Palmer Divide as an upper level trough made its way across southern Colorado. Snowfall was enhanced locally with the presence of an upper level jet. Elsewhere, periods of light to moderate snow along with areas of blowing snow were observed. Storm totals included: 23 inches near Eldorado Springs, 18 inches just west of Boulder, 16.5 inches near Orodell, 15 inches, 4 miles west-northwest of Boulder and Greeley; 13 inches at Gold Hill; 12 inches at the National Weather Service Office in Boulder, 11 inches in Ken Caryl; 8.5 inches near Morrison; 8 inches at Genesee and Roxborough Park; 7.5 inches, 14 miles west-southwest of Agate and 5 miles south-southwest of Arapahoe Park; with 6.5 inches at Denver International Airport. The combination of snow and strong winds produced drifts from 1 to 3 feet deep were reported over eastern Elbert, western Lincoln and Logan Counties.
The local office's own words before the first event, 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 the first event at Apr 8, 8:03 PM MST, 2 hours 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 903 PM MDT MON APR 8 2013 .UPDATE...SEVERE THUNDERSTORM POTENTIAL STILL OVER NORTHERN WASHINGTON COUNTY BUT SHOULD DIE DOWN BY 04Z. SNOW HAS DEVELOPED BUT HEAVY SNOW HAD BEEN DELAYED IN THE DENVER AREA AS THE AREA OF THUNDERSTORMS THAT WERE NEAR THE METRO AREA HAVE SHIFTED TO THE NORTH AND EAST. SHOULD STILL SEE SNOW INCREASE ALONG THE URBAN CORRIDOR ON OR AFTER 06Z. LATEST NAM12 STILL INDICATED HEAVY SNOW FOR THE DENVER AREA...IT APPEARS TO BE HEAVIEST ALONG AND NORTH OF THE INTERSTATE 76 CORRIDOR. SINCE THIS IS JUST ONE MODEL RUN...WILL HOLD OFF MAKING ANY ADJUSTMENTS TO THE WINTER WEATHER HIGHLIGHTS AT THIS TIME. WILL NEED TO WATCH ZONE 48 FOR A POSSIBLE UPGRADE FM A WINTER WEATHER ADVISORY TO A WINTER STORM WARNING... ESPECIALLY ON THE NORTHWEST HALF OF LOGAN COUNTY. WINDS MARGINAL FOR BLIZZARD WARNING FOR SOME OTHER PLAINS AREAS BUT NOT CONFIDENT ENOUGH AT THIS POINT TO UPGRADE ANY OF THOSE ZONES TO A BLIZZARD WARNING. && .AVIATION...DELAY OF GAME PENALTY ISSUED FOR THIS SNOWSTORM. THUNDERSTORMS THAT APPEARED TO BE NEARING THE METRO AREA HAVE MOVED OFF TO THE NORTH AND EAST. WILL HAVE TO DELAY THE POTENTIAL FOR HEAVY SNOW UNTIL AFTER 06Z. LATEST NAM12 STILL BRING HEAVY SNOW INTO THE METRO AREA LATE TONIGHT THROUGH TUESDAY. SHOULD SEE IFR CIG/VSBY RESTRICTION DEVELOPING AFTER 06Z. && .PREV DISCUSSION... /ISSUED 440 PM MDT MON APR 8 2013/ SHORT TERM...STILL A LOT OF QUESTIONS REGARDING THE FORECAST TONIGHT AND TUESDAY. WATER VAPOR LOOPS SHOWS THE UPPER LOW SPINNING EAST/SOUTHEAST ALONG THE UTAH/ARIZONA BORDER. MEANWHILE...THE COLD FRONT HAS ALREADY PUSHED ACROSS THE WYOMING BORDER AREA AND IS SLIGHTLY AHEAD OF THE SHORT RANGE MODELS. THUNDERSTORMS HAVE DEVELOPED OVER THE NORTHEAST PLAINS IN THE MORE UNSTABLE AIRMASS...AND LOW LEVEL DEWPOINTS WILL BE INCREASING INTO THE LOWER 40S SO WILL CONTINUE THE SEVERE THREAT INTO THE EVENING HOURS. THIS THREAT WILL SHIFT SOUTHWARD WITH THE COLD FRONTAL PASSAGE. SHOWERS WERE FILLING IN QUICKLY BEHIND THE FRONT...AND WILL CONTINUE TO SPREAD SOUTH ACROSS THE FRONT RANGE URBAN CORRIDOR THROUGH THE EVENING. TEMPERATURES WILL ALSO DROP QUICKLY BEHIND THE FRONT WITH READINGS CURRENTLY IN THE UPPER 20S IN EAST CENTRAL WYOMING. THIS SETS UP A POTENTIAL BARRIER JET SETUP...ALTHOUGH THE FEATURE SHOULD BE RELATIVELY SHORT LIVED THIS EVENING BEFORE COLD AIRMASS DEEPENS SUFFICIENTLY AND SPREADS ACROSS THE ENTIRE FORECAST AREA. THIS GIVES US POTENTIAL FOR HEAVY CONVECTIVE SNOW SHOWERS FOR A FEW HOURS THIS EVENING...MOST LIKELY FROM THE DENVER METRO AREA NORTHWARD TO THE WYOMING BORDER. AFTER MIDNIGHT...THE SNOW IS EXPECTED TO WEAKEN IN INTENSITY BUT SHOULD BECOME MORE WIDESPREAD AS COLD UPSLOPE FLOW BECOMES MORE WIDESPREAD. THE MAIN QUESTION WITH REGARD TO SNOW ACCUMULATION ON TUESDAY REVOLVES AROUND UPPER LOW TRACK. AT THIS TIME...THERE IS REASONABLE CONSENSUS AMONGST THE MODELS OF KICKING THE UPPER LOW IN A NORTHEAST DIRECTION FROM THE FOUR CORNERS REGION INTO EAST CENTRAL COLORADO...ALTHOUGH THE LATEST ECMWF WAS EVEN A BIT FARTHER NORTH THAN THAT. IT LOOKS LIKE THE MODELS ARE REALLY FOCUSING ON THE LATEST HEAT RELEASE ASSOCIATED WITH SIGNIFICANT PRECIPITATION RATES TO OUR NORTH AND EAST. AS A RESULT...THE UPPER LOW JUST JUMPS NORTHEAST TOMORROW IN A TWO-PRONGED FASHION WHICH COULD LEAD TO POTENTIAL DRY SLOT AND LIGHTER SNOWFALL AMOUNTS. AT THE SAME TIME...THERE IS GOOD Q-G LIFT WITH THIS SPRING STORM SYSTEM SO THAT COULD LEAD TO BETTER PRECIPITATION ALONG THE FRONT RANGE. ALTHOUGH IF THE LOW BREAKS INTO TWO PIECES THEN EVEN THE Q-G CONTRIBUTION COULD BE LIMITED. AT THIS POINT...HAVE NUDGED DOWN SNOW AMOUNTS JUST A BIT TO ACCOUNT FOR THIS. WELD AND MORGAN COUNTY AREAS COULD CERTAINLY BE UPGRADED TO BLIZZARD WARNINGS IF UPPER LOW AND ASSOCIATED HEAVY SNOW TAKES THAT FURTHER NORTH JUMP. TEMPERATURES WILL BE EXTREMELY COLD FOR THIS TIME OF YEAR WITH READINGS LIKELY HOLDING IN THE TEENS FOR MOST IF NOT ALL OF THE DAY. DESPITE THE WARM PAVEMENT TEMPS...WE DO SEE TEMPERATURES HOLDING COLD ENOUGH FOR SNOW/ICE ACCUMULATION ON ROADS. ROAD CLOSURES WILL BE POSSIBLE IN AREAS THAT SEE HEAVIER SNOW ACCUMULATIONS AND STRONGEST WINDS/POSSIBLE BLIZZARD CONDITIONS TUESDAY...JUST EAST OF THE I-25 CORRIDOR. LONG TERM...THE 500 MB LOW OF THE STORM WILL BE OVER THE STATE TUESDAY EVENING AND WILL MOVE NORTHEAST INTO NEBRASKA BY WEDNESDAY MORNING. SNOW WILL BE DIMINISHING THROUGH THE EVENING AND SHOULD BE ALL BUT DONE AFTER MIDNIGHT. ANOTHER INCH OR SO OF ACCUMULATION MAY OCCUR OVER THE PLAINS WITH ANOTHER COUPLE INCHES OVER THE HIGH TERRAIN. WINDS WILL BE DECREASING AS WELL...BUT GUSTS TO 30 MPH WILL CONTINUE TO CAUSE BLOWING AND DRIFTING SNOW. CLEARING SKIES AND SNOW ON THE GROUND WILL HELP ATTAIN NEAR RECORD LOW TEMPERATURES TUESDAY NIGHT...AROUND 10 DEGREES ON THE PLAINS (RECORD FOR DENVER IS 7 DEGREES) AND IN THE SINGLE DIGITS OVER THE MOUNTAINS. THESE TEMPERATURES AND WINDS WILL COMBINE TO BRING BELOW ZERO WIND CHILL READINGS. LIGHT SNOW WILL LIKELY CONTINUE IN THE MOUNTAINS WEDNESDAY IN NORTHWEST FLOW ALOFT...WITH THE COLD TEMPERATURES STAYING ENTRENCHED ACROSS THE FORECAST AREA. FOR THURSDAY INTO THE WEEKEND...THE STATE WILL BE UNDER NORTHWEST FLOW ALOFT WITH SEVERAL DISTURBANCES MOVING OVERHEAD. COOL TEMPERATURES...MOUNTAIN SNOW SHOWERS AND A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS FOR THE PLAINS WILL OCCUR THURSDAY AND FRIDAY WITH TEMPERATURES IN THE 30S AND 40S. WARM ADVECTION WILL MOVE IN FOR SATURDAY AND SUNDAY FOR TEMPERATURES TO WARM BACK INTO THE 60S FOR THE PLAINS AND 40S FOR THE MOUNTAINS. INTERMITTENT SHOWERS WILL STILL OCCUR HOWEVER UNDER THE DISTURBANCES. AVIATION...COLD FRONT EXPECTED TO REACH KDEN 23Z-00Z WITH RAIN SHOWERS AND A FEW THUNDERSTORMS BECOMING MORE NUMEROUS BEHIND THE FRONT. SHOULD SEE A RATHER QUICK CHANGEOVER TO SNOW IN THE 02Z-04Z TIME PERIOD AS COLD AIR DEEPENS SUFFICIENTLY WITH A PERIOD OF 1/4SM VISIBILITIES IN HEAVY SNOW POSSIBLE IF CONVECTION PERSISTS. SNOW INTENSITY SHOULD THEN DECREASE BY 06Z...BUT THEN INCREASE AGAIN TUESDAY MORNING AS Q-G LIFT INCREASES WITH POTENTIAL FOR HEAVY SNOW IN THE 12Z-20Z PERIOD. THEN EXPECT A GRADUAL DECREASE LATE TUESDAY AFTERNOON IN TO THE EVENING. IFR AND OCCASIONAL LIFR/VLIFR CONDITIONS WILL PERSIST THROUGH TONIGHT AND TUESDAY WITH LOW CEILINGS AND VISIBILITIES IN HEAVIER SNOW. NORTH WINDS GUSTING TO 35 KTS WITH FRONTAL PASSAGE AND THROUGH MOST OF TUESDAY. TOTAL ACCUMULATIONS MOST LIKELY 6 TO 10 INCHES...BUT UNCERTAINTY EXISTS. && .BOU WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO MIDNIGHT MDT TUESDAY NIGHT FOR COZ046>051. WINTER STORM WARNING UNTIL 6 PM MDT TUESDAY FOR COZ033>036. WINTER STORM WARNING UNTIL 6 PM MDT TUESDAY FOR COZ038>040- 042>044. BLIZZARD WARNING FROM MIDNIGHT TONIGHT TO 6 PM MDT TUESDAY FOR COZ041-045. && SHORT TERM...COOPER LONG TERM....KRIEDERMAN AVIATION...COOPER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1105 AM MDT MON APR 8 2013 COZ030>051-091715- 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- 1105 AM MDT MON APR 8 2013 ...WINTER STORM WARNING FOR THE FRONT RANGE MOUNTAINS...FOOTHILLS AND URBAN CORRIDOR EAST OUT TO MORGAN COUNTY FOR TONIGHT INTO TUESDAY.... ...BLIZZARD WARNING FOR THE PALMER DIVIDE AND EASTERN ADAMS AND EASTERN ARAPAHOE COUNTIES MIDNIGHT TONIGHT THROUGH TUESDAY AFTERNOON... ...WINTER STORM WATCH REMAINS IN EFFECT FOR THE FAR EASTERN PLAINS... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT A STRONG STORM SYSTEM OVER THE GREAT BASIN WILL PRODUCE A VARIETY OF WEATHER ACROSS THE REGION BEGINNING THIS AFTERNOON. SCATTERED THUNDERSTORMS...SOME POSSIBLY SEVERE...MAY DEVELOP AHEAD OF THIS SYSTEM OVER THE NORTHEAST PLAINS. THE AREA WHERE SEVERE STORM FORMATION WILL HAVE THE HIGHEST PROBABILITY WILL BE ALONG AND EAST OF A LINE FROM FORT MORGAN TO LIMON. THE BIGGEST THREAT LOOKS TO BE LARGE HAIL AND PERHAPS AND COUPLE OF TORNADOES DUE TO STRONG LOW LEVEL SHEAR. A COLD FRONT WILL RACE THROUGH EASTERN COLORADO THIS EVENING. RAIN WILL DEVELOP BEHIND THE FRONT. THE RAIN WILL CHANGE TO SNOW THIS EVENING IN THE DENVER AREA...AND JUST AFTER MIDNIGHT ACROSS THE EASTERN PLAINS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SNOW WILL CONTINUE TUESDAY MORNING INTO THE AFTERNOON BEFORE DECREASING. TOTAL ACCUMULATIONS OF 6 TO 14 INCHES WILL BE POSSIBLE IN THE MOUNTAINS...FOOTHILLS AND ALONG THE FRONT RANGE URBAN CORRIDOR WITH 4 TO 10 INCHES OVER THE PLAINS. STRONG NORTHERLY WINDS OF 15 TO 25 MPH WITH GUSTS AS HIGH AS 45 MPH WILL CREATE HAZARDOUS DRIVING CONDITIONS IN BLOWING AND DRIFTING SNOW THROUGH TUESDAY AFTERNOON ALONG AND EAST OF I-25. VISIBILITIES NEAR A QUARTER MILE IN BLOWING WILL ALSO CONTRIBUTE TO THE DANGEROUS CONDITIONS. WINDS COMBINING WITH THE COLD TEMPERATURES EXPECTED WILL CREATE WIND CHILL VALUES NEAR ZERO DEGREES. THE SNOW SHOULD END TUESDAY LATE EVENING IN MOST AREAS. FOR THE REST OF THE WEEK A FEW MINOR DISTURBANCES MAY AFFECT THE AREA THURSDAY AND FRIDAY BRINGING A CHANCE OF SNOW TO THE MOUNTAINS WITH A SLIGHT CHANCE OF SHOWERS OVER NORTHEAST COLORADO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE REQUIRED FOR THE EASTERN PLAINS THIS AFTERNOON AND EARLY EVENING. SNOWFALL REPORTS WILL BE GREATLY APPRECIATED TONIGHT INTO TUESDAY MORNING. BARJENBRUCH/KRIEDERMAN
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
913 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0318 PM HAIL 9 WSW COPE 39.61N 102.99W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
914 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM SNOW 3 W JAMESTOWN 40.11N 105.44W
04/08/2013 M1.5 INCH BOULDER CO TRAINED SPOTTER
1 INCHE IN THE PAST HOUR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0318 PM HAIL 9 WSW COPE 39.61N 102.99W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
942 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0938 PM HAIL 11 NE AKRON 40.28N 103.06W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0932 PM TSTM WND GST 4 E HAXTUN 40.64N 102.55W
04/08/2013 M65.00 MPH PHILLIPS CO TRAINED SPOTTER
0930 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
04/08/2013 M2.0 INCH BOULDER CO TRAINED SPOTTER
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0830 PM SNOW 3 W JAMESTOWN 40.11N 105.44W
04/08/2013 M1.5 INCH BOULDER CO TRAINED SPOTTER
1 INCHE IN THE PAST HOUR
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0318 PM HAIL 9 WSW COPE 39.61N 102.99W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1013 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1007 PM SNOW GENESEE 39.69N 105.27W
04/08/2013 M1.5 INCH JEFFERSON CO TRAINED SPOTTER
0953 PM SNOW 3 N CONIFER 39.56N 105.30W
04/08/2013 M1.1 INCH JEFFERSON CO TRAINED SPOTTER
0938 PM HAIL 11 NE AKRON 40.28N 103.06W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0932 PM TSTM WND GST 4 E HAXTUN 40.64N 102.55W
04/08/2013 M65.00 MPH PHILLIPS CO TRAINED SPOTTER
0930 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
04/08/2013 M2.0 INCH BOULDER CO TRAINED SPOTTER
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM SNOW 3 W JAMESTOWN 40.11N 105.44W
04/08/2013 M1.5 INCH BOULDER CO TRAINED SPOTTER
1 INCHE IN THE PAST HOUR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0318 PM HAIL 9 WSW COPE 39.61N 102.99W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1040 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1038 PM SNOW ESTES PARK 40.37N 105.52W
04/08/2013 M2.0 INCH LARIMER CO TRAINED SPOTTER
1017 PM HAIL BURDETT 40.36N 102.95W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
DIME TO NICKEL SIZE HAIL COVERING THE GROUND TO A DEPTH
OF ONE INCH
1007 PM SNOW 3 N BLACK HAWK 39.84N 105.49W
04/08/2013 M3.0 INCH GILPIN CO TRAINED SPOTTER
1007 PM SNOW GENESEE 39.69N 105.27W
04/08/2013 M1.5 INCH JEFFERSON CO TRAINED SPOTTER
0953 PM SNOW 3 N CONIFER 39.56N 105.30W
04/08/2013 M1.1 INCH JEFFERSON CO TRAINED SPOTTER
0938 PM HAIL 11 NE AKRON 40.28N 103.06W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0932 PM TSTM WND GST 4 E HAXTUN 40.64N 102.55W
04/08/2013 M65.00 MPH PHILLIPS CO TRAINED SPOTTER
0930 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
04/08/2013 M2.0 INCH BOULDER CO TRAINED SPOTTER
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0830 PM SNOW 3 W JAMESTOWN 40.11N 105.44W
04/08/2013 M1.5 INCH BOULDER CO TRAINED SPOTTER
1 INCH IN THE PAST HOUR
0800 PM NON-TSTM WND DMG S AKRON 40.16N 103.21W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
THREE 18 INCH DIAMETER TRANSMISSION POLES SNAPPED
0800 PM TSTM WND DMG 1 S AKRON 40.15N 103.21W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
TRAILER HOME BLOWN OVER AND DESTROYED
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DENVER CO
1101 PM MDT MON APR 08 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1050 PM TSTM WND DMG 4 S HOLYOKE 40.53N 102.30W
04/08/2013 PHILLIPS CO TRAINED SPOTTER
TELEPHONE POLE KNOCKED OVER
1040 PM NON-TSTM WND DMG 1 S HOLYOKE 40.57N 102.30W
04/08/2013 PHILLIPS CO TRAINED SPOTTER
SEMI-TRAILER TRUCK TURNED OVER
1038 PM SNOW ESTES PARK 40.37N 105.52W
04/08/2013 M2.0 INCH LARIMER CO TRAINED SPOTTER
1017 PM HAIL BURDETT 40.36N 102.95W
04/08/2013 M0.88 INCH WASHINGTON CO TRAINED SPOTTER
DIME TO NICKEL SIZE HAIL COVERING THE GROUND TO A DEPTH
OF ONE INCH
1007 PM SNOW GENESEE 39.69N 105.27W
04/08/2013 M1.5 INCH JEFFERSON CO TRAINED SPOTTER
1007 PM SNOW 3 N BLACK HAWK 39.84N 105.49W
04/08/2013 M3.0 INCH GILPIN CO TRAINED SPOTTER
0953 PM SNOW 3 N CONIFER 39.56N 105.30W
04/08/2013 M1.1 INCH JEFFERSON CO TRAINED SPOTTER
0938 PM HAIL 11 NE AKRON 40.28N 103.06W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
0932 PM TSTM WND GST 4 E HAXTUN 40.64N 102.55W
04/08/2013 M65.00 MPH PHILLIPS CO TRAINED SPOTTER
0930 PM SNOW 4 ENE NEDERLAND 39.99N 105.45W
04/08/2013 M2.0 INCH BOULDER CO TRAINED SPOTTER
0855 PM HAIL 2 NNW ST PETERSBURG 40.59N 102.84W
04/08/2013 M1.50 INCH LOGAN CO TRAINED SPOTTER
0852 PM TSTM WND DMG 8 N LAST CHANCE 39.85N 103.58W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
EIGHT POWER LINE POLES BLOWN DOWN
0851 PM TORNADO 8 W AKRON 40.16N 103.36W
04/08/2013 WASHINGTON CO EMERGENCY MNGR
0830 PM TSTM WND GST 15 NE AKRON 40.32N 103.01W
04/08/2013 M60.00 MPH WASHINGTON CO TRAINED SPOTTER
QUARTER SIZED HAIL
0830 PM SNOW 3 W JAMESTOWN 40.11N 105.44W
04/08/2013 M1.5 INCH BOULDER CO TRAINED SPOTTER
1 INCH IN THE PAST HOUR
0800 PM NON-TSTM WND DMG S AKRON 40.16N 103.21W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
THREE 18 INCH DIAMETER TRANSMISSION POLES SNAPPED
0800 PM TSTM WND DMG 1 S AKRON 40.15N 103.21W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
TRAILER HOME BLOWN OVER AND DESTROYED
0754 PM TSTM WND GST AKRON 40.16N 103.21W
04/08/2013 M69.00 MPH WASHINGTON CO ASOS
0752 PM TORNADO 15 SSW AKRON 39.96N 103.32W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
ON THE GROUND FOR THE PAST 10 MINUTES
0724 PM TORNADO 10 W AKRON 40.16N 103.40W
04/08/2013 WASHINGTON CO TRAINED SPOTTER
0653 PM HAIL 6 SE SHAMROCK 39.83N 103.72W
04/08/2013 M1.50 INCH ADAMS CO TRAINED SPOTTER
0525 PM HAIL 6 N HYDE 40.21N 102.81W
04/08/2013 M1.25 INCH WASHINGTON CO TRAINED SPOTTER
&&
JKThe national radar mosaic for the moment the first event began.
5 winter storm. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2013Every state in 2013This day in weather historyWarnings in Colorado, April 2013
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 447288, 447289, 447290, 447291, 447292.