Hail, Arapahoe
- When
- June 18, 5:38 PM MST
- Where
- Arapahoe County, 3.19 mi W of (Bkf)buckley Air Force Base
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 39.700, -104.810
Tornadoes and Hail in Colorado, June 18, 2014
Severe thunderstorms broke out across the northeast plains of Colorado. Large hail, ranging from quarter to baseball size, damaging thunderstorm winds and three short lived tornadoes.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 15
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.
What happened
The episode as NWS BOU wrote it up.
Severe thunderstorms broke out across the northeast plains of Colorado. Large hail, ranging from quarter to baseball size, damaging thunderstorm winds and three short lived tornadoes. Intense straight-line winds downed trees and power lines across Washington, Sedgwick and Phillips Counties. In addition, a barn, grain bins and a transmission tower were extensively damaged.
What forecasters said that day
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 Jun 18, 5:38 PM MST, 0 minutes earlier.
Area forecast discussion, Jun 18, 5:38 PM MST, 0 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 638 PM MDT WED JUN 18 2014 .UPDATE... ISSUED AT 631 PM MDT WED JUN 18 2014 UPPER TROUGH AND RIGHT REAR ENTRANCE REGION OF UPPER JET PROVIDING SUFFICIENT LIFT AND DESTABILIZATON FOR NUMEROUS SHOWERS AND STORMS. THEY WILL LIKELY REORGANIZE AS THEY MOVE NORTHEAST INTO A MORE UNSTABLE ENVIRONMENT. HAD EARLIER INCREASED POPS FOR THE FRONT RANGE EASTWARD. WILL CONTINUE TO MONITOR SEVERE THREAT AS LOW LEVEL MOISTURE AND CAPES ARE INCREASING OVER THE EASTERN PLAINS. STRONG LOW LEVEL CONVERGENCE WILL ALSO OCCUR EAST OF THE METRO AREA IN THE NEXT 1-2 HOURS. && .SHORT TERM...(THIS EVENING THROUGH THURSDAY) ISSUED AT 146 PM MDT WED JUN 18 2014 WATER VAPOR SATELLITE SHOWING AN UPPER LEVEL LOW OVER THE NORTHERN ROCKIES AND A SHORT WAVE ROTATING AROUND IT NEAR THE COLORADO-UTAH BORDER. THIS WAVE WILL MOVE ACROSS WYOMING AND NORTHERN COLORADO LATE THIS AFTERNOON AND THIS EVENING. A LARGE CUMULUS FIELD AND ISOLATED SHOWERS HAVE DEVELOPED IN FRONT OF THE WAVE OVER THE HIGHER TERRAIN. AS THE AIRMASS DESTABILIZES MORE AND LIFT FROM THE WAVE NEARS...STORMS WILL INCREASE DURING THE LATE AFTERNOON AND EARLY EVENING. IN ADDITION TO THIS...A COLD FRONT WILL MOVE SOUTHEAST ACROSS THE AREA LATE THIS AFTERNOON AND EVENING. MOISTURE IS LIMITED WITH DEW POINTS IN THE 30S. EXPECT THE STORMS TO BE HIGH BASED. THE MAIN THREAT FROM THE STORMS WILL BE GUSTY OUTFLOW WINDS...THOUGH SOME SMALL HAIL IS ALSO POSSIBLE. AS STORMS MOVE INTO MORE MOISTURE OVER NORTHEAST COLORADO...THE CHANCES FOR A SEVERE STORM OR TWO INCREASES. BEST CHANCE FOR STORMS ALONG THE FRONT RANGE WILL BE LATE THIS AFTERNOON...AND SHIFT TO THE EASTERN PLAINS EARLY THIS EVENING. CHANCES FOR STORMS WILL QUICKLY END THIS EVENING FROM WEST TO EAST AS DRIER AIR ALOFT MOVES IN BEHIND THE FRONT. THE DRIER AND COOLER AIR WILL LEAD TO COOL OVERNIGHT LOWS WITH MOST PLACES FALLING INTO THE 40S. IT WILL BE COOL AND STABLE THURSDAY BEHIND THIS SYSTEM. HIGHS WILL BE IN THE UPPER 70S TO LOWER 80S ACROSS NORTHEAST COLORADO. AIRMASS WILL BE TOO DRY AND STABLE FOR ANY PRECIPITATION DURING THE AFTERNOON. .LONG TERM...(THURSDAY NIGHT THROUGH WEDNESDAY) ISSUED AT 329 PM MDT WED JUN 18 2014 COOL AND MAINLY STABLE AIRMASS WILL CONTINUE OVER THE AREA THURSDAY EVENING WITH WESTERLY FLOW ALOFT. MODELS CONTINUE TO BRING SOME LOW LEVEL MOISTURE ACROSS LINCOLN COUNTY DURING THE EVENING AND GENERATE SOME LIGHT QPF. NAM SHOWS ABOUT 400 J/KG OF SURFACE CAPE WHILE THE GFS ONLY AROUND 100 J/KG. FORECAST SOUNDINGS DO INDICATE A WEAK CAP OVER THE AREA. LOW LEVEL CONVERGENCE TO GENERATE SOME CUMULUS...MAY BE ENOUGH TO BREAK CAP AND POP A FEW STORMS. WILL INCLUDE A SLIGHT CHANCE OF STORMS THERE DURING THE EVENING. OTHERWISE...SKIES TO BE MAINLY CLEAR THROUGH THE OVERNIGHT HOURS. ON FRIDAY...UPPER RIDGE BUILDS OVER THE AREA WITH WEAK ZONAL TO SLIGHTLY SOUTHWEST FLOW ALOFT. AIRMASS WARMER WITH HIGHS IN THE LOWER AND MIDDLE 80S ACROSS THE PLAINS. MODELS CONTINUE TO BRING LOW LEVEL MOISTURE NORTHWARD ACROSS THE PLAINS...ESPECIALLY EAST OF DENVER WITH A BIT OF QPF FAR EASTERN ZONES. WILL INCLUDE A SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS FAR EASTERN PLAINS. FLOW ALOFT BECOMES MORE SOUTHWEST SATURDAY AS UPPER TROUGH MOVES INTO THE NORTHERN GREAT BASIN. MOISTURE TO GRADUALLY INCREASE OVER THE AREA BY THE AFTERNOON. AIRMASS TO BECOME UNSTABLE WHICH SHOULD LEAD TO A SLIGHT CHANCE OF THUNDERSTORMS MOST LOCATIONS. BEST CHANCE TO BE ALONG THE CONTINENTAL DIVIDE AND ACROSS THE PALMER DIVIDE. STORMS COULD BE SLOW MOVING DUE TO FAIRLY LIGHT STEERING WINDS...AND COULD PRODUCE BRIEF MODERATE RAINFALL. LITTLE CHANGE IN TEMPERATURES EXPECTED WITH HIGHS WARMING INTO THE MIDDLE 80S. SOUTHWEST FLOW ALOFT CONTINUES OVER THE AREA SUNDAY. BOTH GFS AND ECMWF HINT AT A MID LEVEL SHORTWAVE MOVING ACROSS WYOMING AND NORTHEAST COLORADO DURING THE AFTERNOON...PUSHING A FRONT ACROSS THE PLAINS BY THE EVENING. THERE IS SOME INCREASE IN MID LEVEL ASCENT WHICH SEEMS TO BE ASSOCIATED WITH THE WAVE. DEVELOPING EASTERLY UPSLOPE AND AN INCREASE IN MOISTURE TO PROVIDE FOR A BETTER CHANCE FOR THUNDERSTORMS... MAINLY DURING THE AFTERNOON AND EVENING HOURS. TEMPERATURES SLIGHTLY COOLER WITH EXPECTED CLOUD COVER. FOR THE LATER DAYS...MONDAY THROUGH WEDNESDAY. BOTH THE GFS AND ECMWF BUILD UPPER RIDGE NORTHWARD ACROSS THE FOUR CORNERS REGION MONDAY WITH NORTHWEST FLOW ALOFT OVER NORTHEAST COLORADO. AIRMASS TO BE COOLER AND REMAIN FAIRLY MOIST WITH PRECIPITABLE WATER VALUES AROUND 0.90 INCHES IN THE DENVER AREA. CONTINUED EASTERLY UPSLOPE TO PROVIDE A CHANCE OF THUNDERSTORMS DURING THE AFTERNOON AND EVENING. MODELS THEN SHOW THE UPPER RIDGE BUILDING EASTWARD OVER COLORADO TUESDAY AND WEDNESDAY WITH A GRADUAL DECREASE IN MOISTURE AND SLIGHTLY WARMER TEMPERATURES. SHOULD SEE A DECREASE IN THUNDERSTORMS AS A RESULT. && .AVIATION...(FOR THE TAFS THROUGH 06Z THURSDAY EVENING) ISSUED AT 631 PM MDT WED JUN 18 2014 THUNDERSTORMS AND GUSTY WINDS TO AROUND 35 KTS WILL BE DIMINISHING AROUND 02Z- 03Z...FIRST ENDING OVER THE WESTERN DENVER AREA AIRPORTS AND AT KDEN LAST. THEN VFR CONDITIONS WITH LIGHTER WINDS. && .HYDROLOGY... ISSUED AT 329 PM MDT WED JUN 18 2014 SCATTERED THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA THROUGH EARLY TO MID EVENING. STORMS ARE EXPECTED TO BE MOVING QUICKLY AND MOISTURE IS LIMITED. THEREFORE...THE THREAT FOR HEAVY RAIN RESULTING IN FLASH FLOODING IS VERY LOW. THUNDERSTORM CHANCES GRADUALLY INCREASE SATURDAY WITH AN INCREASE IN MOISTURE. BEST CHANCE FOR STORMS TO BE ALONG THE CONTINENTAL DIVIDE AND ACROSS THE PALMER DIVIDE. STORMS THAT DEVELOP MAY BE SLOW MOVING WITH FAIRLY LIGHT STEERING WINDS AND COULD PRODUCE BRIEF MODERATE RAINFALL. BETTER CHANCE FOR THUNDERSTORMS SUNDAY AND MONDAY. SOME STORMS COULD PRODUCE BRIEF HEAVY RAIN...BUT STEERING WINDS EXPECTED TO INCREASE WHICH SHOULD KEEP STORMS MOVING ALONG. AT THIS TIME...THE THREAT FOR FLASH FLOODING IS LOW. && .BOU WATCHES/WARNINGS/ADVISORIES... NONE. && UPDATE...BARJENBRUCH SHORT TERM...MEIER LONG TERM...D-L AVIATION...BARJENBRUCH HYDROLOGY...MEIER
Hazardous weather outlook, Jun 18, 9:51 AM MST, 7 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1051 AM MDT WED JUN 18 2014 COZ030>051-191700- 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- 1051 AM MDT WED JUN 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT THERE WILL BE A CHANCE OF THUNDERSTORMS THIS AFTERNOON INTO THE EARLY EVENING HOURS. A FEW STORMS COULD BECOME SEVERE OVER THE FAR NORTHEAST PLAINS OF COLORADO WITH LARGE HAIL AND DAMAGING WINDS. ELSEWHERE THE STORMS MAY PRODUCE SMALL HAIL ALONG WITH WIND GUSTS TO 50 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY DRY CONDITIONS WILL PREVAIL ACROSS THE FORECAST AREA THURSDAY AND FRIDAY AS AN UPPER LEVEL RIDGE BUILDS ACROSS THE REGION. WEAK UPPER RIDGING IS EXPECTED TO PERSIST FROM SATURDAY THROUGH TUESDAY WITH A SLIGHTLY WARMER AIRMASS BUT A GRADUAL INCREASE IN MOISTURE. THIS WILL LEAD TO A CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS... MAINLY OVER THE MOUNTAINS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
In the hours before
Special weather statement, Jun 18, 4:47 PM MST, 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 547 PM MDT WED JUN 18 2014 COZ043-190015- CENTRAL AND SOUTH WELD COUNTY CO- 547 PM MDT WED JUN 18 2014 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WELD COUNTY UNTIL 615 PM MDT... AT 546 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR FREDERICK...OR 23 MILES SOUTH OF GREELEY...MOVING NORTHEAST AT 25 MPH. DIME SIZE HAIL...WINDS IN EXCESS OF 40 MPH AND HEAVY RAIN WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... FIRESTONE...FREDERICK AND DACONO. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR SUDDEN GUSTY WINDS. SECURE LOOSE OBJECTS AND MOVE TO A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 4002 10490 4004 10496 4019 10492 4016 10478 TIME...MOT...LOC 2346Z 205DEG 22KT 4010 10489 BAKER
Special weather statement, Jun 18, 4:56 PM MST, 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 556 PM MDT WED JUN 18 2014 COZ036-039-040-190030- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY CO- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET CO- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY CO- 556 PM MDT WED JUN 18 2014 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ARAPAHOE... NORTHEASTERN JEFFERSON AND SOUTHWESTERN DENVER COUNTIES UNTIL 630 PM MDT... AT 555 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR TINY TOWN...OR 15 MILES SOUTHWEST OF DENVER...MOVING NORTHEAST AT 25 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STORM MAY ALSO PRODUCE HEAVY RAINFALL RESULTING IN MINOR STREAT FLOODING. LOCATIONS IMPACTED INCLUDE... WESTERN DENVER...LAKEWOOD...SOUTHEASTERN ARVADA...NORTHERN ENGLEWOOD...WHEAT RIDGE...GOLDEN...SHERIDAN...MORRISON...RED ROCKS PARK...TINY TOWN AND INDIAN HILLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3950 10516 3953 10525 3981 10519 3976 10494 TIME...MOT...LOC 2355Z 205DEG 21KT 3957 10517 BAKER
Special weather statement, Jun 18, 5:03 PM MST, 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 603 PM MDT WED JUN 18 2014 COZ039-040-043-190030- CENTRAL AND SOUTH WELD COUNTY CO- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY CO- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY CO- 603 PM MDT WED JUN 18 2014 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN BOULDER...SOUTHWESTERN WELD...EASTERN BROOMFIELD...NORTHEASTERN JEFFERSON...NORTHWESTERN DENVER AND NORTHWESTERN ADAMS COUNTIES UNTIL 630 PM MDT... AT 602 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER SOUTHEASTERN WESTMINSTER...OR 10 MILES NORTH OF DENVER...MOVING NORTHEAST AT 25 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... THORNTON...EASTERN ARVADA...WESTMINSTER...BROOMFIELD...NORTHGLENN... LAFAYETTE...ERIE...FEDERAL HEIGHTS AND DACONO. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR SUDDEN GUSTY WINDS. SECURE LOOSE OBJECTS AND MOVE TO A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3981 10502 3985 10511 4006 10507 4005 10484 TIME...MOT...LOC 0002Z 205DEG 21KT 3987 10504 BAKER
Special weather statement, Jun 18, 5:03 PM MST, 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 603 PM MDT WED JUN 18 2014 COZ039-040-043-190030- CENTRAL AND SOUTH WELD COUNTY CO- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY CO- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY CO- 603 PM MDT WED JUN 18 2014 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN BOULDER...SOUTHWESTERN WELD...EASTERN BROOMFIELD...NORTHEASTERN JEFFERSON...NORTHWESTERN DENVER AND NORTHWESTERN ADAMS COUNTIES UNTIL 630 PM MDT... AT 602 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER SOUTHEASTERN WESTMINSTER...OR 10 MILES NORTH OF DENVER...MOVING NORTHEAST AT 25 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... THORNTON...EASTERN ARVADA...WESTMINSTER...BROOMFIELD...NORTHGLENN... LAFAYETTE...ERIE...FEDERAL HEIGHTS AND DACONO. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR SUDDEN GUSTY WINDS. SECURE LOOSE OBJECTS AND MOVE TO A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3981 10502 3985 10511 4006 10507 4005 10484 TIME...MOT...LOC 0002Z 205DEG 21KT 3987 10504 BAKER
Special weather statement, Jun 18, 5:28 PM MST, 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
628 PM MDT WED JUN 18 2014
COZ039-040-190100-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY
CO-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE
COUNTIES/EAST BROOMFIELD COUNTY CO-
628 PM MDT WED JUN 18 2014
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN ARAPAHOE...NORTHERN
DOUGLAS...NORTHEASTERN JEFFERSON...SOUTHWESTERN DENVER AND
SOUTHWESTERN ADAMS COUNTIES UNTIL 700 PM MDT...
AT 624 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
ENGLEWOOD...OR 6 MILES SOUTH OF DENVER...MOVING NORTHEAST AT 25 MPH.
DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.
WEATHER SPOTTERS IN LITTLETON AND SHERIDAN HAVE REPORTED PEA SIZE
HAIL...BRIEF HEAVY RAIN AAS WEEL AS SOME ROTATION WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
DENVER...WESTERN AURORA...LAKEWOOD...SOUTHEASTERN ARVADA...
SOUTHWESTERN CENTENNIAL...NORTHERN HIGHLANDS RANCH...SOUTHWESTERN
COMMERCE CITY...LITTLETON...ENGLEWOOD...WHEAT RIDGE...EASTERN
GOLDEN...GREENWOOD VILLAGE...SHERIDAN AND MORRISON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
MINOR STREET FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS
STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK
A SAFE SHELTER INSIDE A BUILDING OR VEHICLE.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 3962 10516 3964 10518 3968 10519 3969 10514
3971 10515 3972 10518 3984 10512 3977 10481
3956 10494
TIME...MOT...LOC 0024Z 205DEG 21KT 3964 10497
BAKERSpecial weather statement, Jun 18, 5:33 PM MST, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 633 PM MDT WED JUN 18 2014 COZ040-043-190100- CENTRAL AND SOUTH WELD COUNTY CO- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY CO- 633 PM MDT WED JUN 18 2014 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WELD...NORTHEASTERN DENVER AND NORTHWESTERN ADAMS COUNTIES UNTIL 700 PM MDT... AT 630 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR BRIGHTON...OR 19 MILES NORTH OF DENVER...MOVING NORTHEAST AT 30 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. AT 625 PM MDT...TRAINED WEATHER SPOTTERS REPORTED HEAVY RAINFALL CAUSING MINOR STREET FLOODING ACROSS NORTHERN THORNTON AND EASTERN WESTMINSTER NEAR THE INTERSECTION OF I-25 AND 120TH AVENUE. LOCATIONS IMPACTED INCLUDE... NORTHERN THORNTON...NORTHEASTERN WESTMINSTER...NORTHEASTERN BROOMFIELD...NORTHEASTERN COMMERCE CITY...BRIGHTON...FIRESTONE... FREDERICK...FORT LUPTON...LOCHBUIE...DACONO...HUDSON AND BARR LAKE. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR SUDDEN GUSTY WINDS. SECURE LOOSE OBJECTS AND MOVE TO A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO MINOR STREET FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3988 10475 3996 10500 4019 10494 4010 10463 TIME...MOT...LOC 0030Z 213DEG 27KT 4000 10485 BAKER
The radar
The Denver radar (KFTG), 25 km away, was scanning. The volume nearest the first event began at 00:38 UTC.
Event by event
7 thunderstorm wind, 5 hail, 3 tornado. Local standard time, as filed.
Hail, Arapahoe
- When
- June 18, 5:45 PM MST
- Where
- Arapahoe County, 3.26 mi WNW of (Bkf)buckley Air Force Base
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 39.710, -104.810
Hail, Logan
- When
- June 18, 6:38 PM MST
- Where
- Logan County, 4.72 mi W of Fleming
- Measured
- 2.75 in hail
- Reported by
- Law Enforcement
- Coordinates
- 40.680, -102.920
Tornado, Washington
- When
- June 18, 7:16 PM MST
- Where
- Washington County, 11.96 mi NE of Akron Gebauer Arpt
- Rating
- EF0
- Path length
- 0.1 mi
- Path width
- 50 yd
- Reported by
- Storm Chaser
- Coordinates
- 40.380, -102.950
A tornado touched down briefly near the Burdett Cemetary; no damage was reported.
Thunderstorm Wind, Washington
- When
- June 18, 7:17 PM MST
- Where
- Washington County, 0.87 mi SW of Akron
- Measured
- 68 kt (78 mph) measured gust
- Reported by
- ASOS
- Coordinates
- 40.160, -103.210
Tornado, Washington
- When
- June 18, 7:26 PM MST
- Where
- Washington County, 3.8 mi NNE of Akron Gebauer Arpt
- Rating
- EF0
- Path length
- 0.1 mi
- Path width
- 50 yd
- Reported by
- Trained Spotter
- Coordinates
- 40.300, -103.070
A tornado touched down in an open field; no damage was reported.
Hail, Logan
- When
- June 18, 7:27 PM MST
- Where
- Logan County, 4.72 mi W of Fleming
- Measured
- 1.5 in hail
- Reported by
- Law Enforcement
- Coordinates
- 40.680, -102.920
Thunderstorm Wind, Washington
- When
- June 18, 7:30 PM MST
- Where
- Washington County, 3.48 mi SW of Akron Gebauer Arpt
- Measured
- 70 kt (81 mph) estimated gust
- Reported by
- Law Enforcement
- Coordinates
- 40.210, -103.140
A large barn suffered extensive wind damage; the side of the barn and the aluminum roof were ripped away.
Tornado, Washington
- When
- June 18, 7:36 PM MST
- Where
- Washington County, 2.1 mi SE of Akron Gebauer Arpt
- Rating
- EF0
- Path length
- 0.1 mi
- Path width
- 50 yd
- Reported by
- Storm Chaser
- Coordinates
- 40.230, -103.070
The tornado touched down briefly in an open field; no damage was reported.
Thunderstorm Wind, Phillips
- When
- June 18, 7:40 PM MST
- Where
- Phillips County, 0.87 mi NW of Haxtun
- Measured
- 70 kt (81 mph) estimated gust
- Reported by
- Law Enforcement
- Coordinates
- 40.640, -102.630
Damaging winds from a severe thunderstorm knocked down numerous trees and power lines.
Thunderstorm Wind, Logan
- When
- June 18, 7:45 PM MST
- Where
- Logan County, 0.69 mi N of Crook
- Measured
- 57 kt (66 mph) measured gust
- Reported by
- Public
- Coordinates
- 40.860, -102.800
Hail, Washington
- When
- June 18, 7:48 PM MST
- Where
- Washington County, 10.97 mi NE of Akron Gebauer Arpt
- Measured
- 1 in hail
- Reported by
- Storm Chaser
- Coordinates
- 40.360, -102.950
Thunderstorm Wind, Phillips
- When
- June 18, 7:55 PM MST
- Where
- Phillips County, 2.09 mi NE of Haxtun Muni Arpt
- Measured
- 70 kt (81 mph) estimated gust
- Reported by
- Law Enforcement
- Coordinates
- 40.640, -102.570
Thunderstorm winds damaged some grain bins. A 100-ft transmission tower was also twisted.
Thunderstorm Wind, Phillips
- When
- June 18, 8:00 PM MST
- Where
- Phillips County, 2.96 mi ENE of Haxtun Muni Arpt
- Measured
- 62 kt (71 mph) measured gust
- Reported by
- Trained Spotter
- Coordinates
- 40.640, -102.550
Intense thunderstorm winds damaged a barn and nearby storage area. Some trees and power lines were also downed.
Thunderstorm Wind, Sedgwick
- When
- June 18, 8:12 PM MST
- Where
- Sedgwick County, 11.49 mi SSE of Julesburg Muni Arpt
- Measured
- 80 kt (92 mph) estimated gust
- Reported by
- Emergency Manager
- Coordinates
- 40.810, -102.260
Thunderstorm winds downed several trees.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flood and Hail in Texas, June 18 to 19, 2014
- Tornadoes and Hail in South Dakota, June 18, 2014
- Hail and Damaging Winds in Ohio, June 18, 2014
- Hail and Damaging Winds in Michigan, June 18, 2014
- Flash Flooding and Hail in Iowa, June 18 to 19, 2014
- Flooding in Minnesota, June 18 to 23, 2014
- Heat in Delaware, June 18 to 19, 2014
- Flash Flooding and Flooding in Iowa, June 18 to 22, 2014
- Tornado and Flooding in Pennsylvania, June 18, 2014
- Hail and Damaging Winds in Illinois, June 18 to 19, 2014
- Flash Flooding and Damaging Wind in Minnesota, June 18 to 19, 2014
- Flash Flood and Flood in Nebraska, June 18 to 19, 2014
More
Every storm in Colorado in 2014Every state in 2014This day in weather historyThe tornado archive for Colorado, 2014Warnings in Colorado, June 2014
Sources
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: 525536, 525540, 525541, 525550, 525548, 525547, 525542, 525554, 525546, 525551, 525556, 525544, 525557, 525555, 525558.