Hail in Colorado, June 19, 2001

Name: Hail in Colorado, June 19, 2001
Start: 2001-06-19T12:30
End: 2001-06-19T14:05
Location: Colorado

June 19, 2001 · NWS BOU · 4 events in 2 counties and zones

4 hail, as filed by the National Weather Service.

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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 4

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 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 19, 2:58 AM MST, 9 hours 32 minutes earlier.

Area forecast discussion, Jun 19, 2:58 AM MST, 9 hours 32 minutes before

NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER COLORADO
358 AM MDT TUE JUN 19 2001

SHORT TERM DISCUSSION:  SURFACE COLD AIR HAS PUSHED OVER THE ENTIRE
CWA WITH STRATUS FORMING OVER MANY AREAS.  RAWS...ACARS...SATELLITE
RADAR AND PROFILER DATA ALL SHOW THAT THE COOL AIR IS ABOUT UP TO 10
THOUSAND FEET ASL AND HAS REACHED MOST AREAS EAST OF THE DIVIDE.
MODEL DATA SUGGESTS THAT IT WILL REMAIN ABOUT LIKE THAT THROUGHOUT
THE DAY ALTHOUGH THERE WILL LIKELY BE SOME EROSION ON THE WESTERN
SIDE.  THE BIG QUESTION THEN IS HOW WILL THE MOISTURE INTERACT WITH
INSOLATION DURING THE DAY.  FEEL THAT AT LEAST THE EASTERN PARTS OF
ZONES 33 AND 34 SHOULD LIGHT UP WITH CONVECTION PRETTY WELL THIS
AFTERNOON.  ZONE 31 LIKELY WILL SEE LESS AS NOT AS MUCH MOISTURE HAS
GOTTEN THAT FAR WEST.  IF THE FOOTHILLS CAN SEE THE SUN...THEY
SHOULD LIGHT UP PRETTY WELL TOO WITH MODEL CAPES PRETTY HEFTY
THERE.  COOL STABLE AIR ON THE PLAINS SHOULD PRECLUDE CONVECTION
THERE ALTHOUGH SOME FOOTHILLS CONVECTION OUGHT TO MAKE IT INTO PARTS
OF THE URBAN CORRIDOR BE FIZZLING OUT IN THE MORE STABLE AIR.
CURRENT FORECAST HAS THINGS PRETTY WELL IN HAND IN THIS REGARD.
MAXIMUM TEMPERATURES IN PLAINS AND FOOTHILLS AREAS SHOULD BE
SUBSTANTIALLY COOLER THAN LAST TWO DAYS WITH MOUNTAINS SEEING A
SLIGHT COOLING...MAINLY IN AREAS EAST OF THE DIVIDE.  BIT OF ONGOING
CONVECTION IN THE NORTHEAST CORNER OUGHT TO SETTLE DOWN IN THE NEXT
COUPLE OF HOURS.  APPEARS FROM WATER VAPOR IMAGERY THAT A WEAK WAVE
OF SOME SORT IS CAUSING THIS AND SHOULD MOVE INTO NEBRASKA SHORTLY.

LONG TERM DISCUSSION:  SURFACE HIGH PRESSURE TO OUR EAST WILL KEEP
THE UPSLOPE CONDITIONS GOING ON THE PLAINS AND IN THE FOOTHILLS
TONIGHT AND WEDNESDAY SO THERE WILL PROBABLY BE SOME STRATUS AROUND
AGAIN IN MANY AREAS TONIGHT AND EARLY WEDNESDAY.  MODEL BOUNDARY
LAYER RELATIVE HUMIDITIES IMPLY THAT THE FOOTHILLS AND SOUTH PARK
WILL SEE SOME LOW CLOUDS AS WELL AS PORTIONS OF THE PLAINS.  THEN BY
AFTERNOON MOST LOW CLOUD SHOULD ERODE AND INSTABILITY SHOULD BE
SUFFICIENT TO GET CONVECTION ROLLING PRETTY WELL IN ALL ZONES...
FIRST OVER THE FOOTHILLS THEN PROPAGATING EAST.  WILL PROBABLY SEE A
DENVER CYCLONE AS WELL AS SYNOPTIC SCALE SURFACE FLOW BECOMES MORE
SOUTHEASTERLY.  DON'T SEE MUCH REASON TO DEVIATE FROM THE CURRENT
FORECAST FOR WEDNESDAY AND WEDNESDAY NIGHT.  NOTHING IN THE NEW
GUIDANCE TO WARRANT CHANGING THE EXTENDED FORECAST.  ET

.DEN...NONE.

In the hours before

Special weather statement, Jun 19, 9:00 AM MST, 3 hours 30 minutes before

COZ030>051-192000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1000 AM MDT TUE JUN 19 2001

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS     ARAPAHOE     BOULDER   CLEAR CREEK   DENVER       DOUGLAS
ELBERT    GILPIN       GRAND     JACKSON       JEFFERSON    LARIMER
LINCOLN   LOGAN        MORGAN    PARK          PHILLIPS     SEDGWICK
SUMMIT    WASHINGTON   WELD

SYNOPSIS:  A MOIST...BUT STABLE AIRMASS WILL REMAIN FIRMLY
ENTRENCHED ACROSS THE EASTERN PLAINS TODAY WHICH WILL PRECLUDE ANY
POSSIBILITY OF THUNDERSTORMS EAST OF THE MOUNTAINS.  HOWEVER...
ENOUGH CLEARING WILL OCCUR OVER THE MOUNTAINS TO ALLOW THUNDERSTORMS
TO DEVELOP ALONG THE EAST SIDE OF THE DIVIDE THIS AFTERNOON.  SOME
OF THESE STORMS WILL MOVE INTO THE FOOTHILLS BY LATE AFTERNOON...BUT
WILL STAY OUT OF THE FRONT RANGE AND PLAINS ENTIRELY.

SPOTTER ACTIVATION IS NOT EXPECTED TODAY.

Special weather statement, Jun 19, 9:42 AM MST, 2 hours 48 minutes before

COZ030>051-192000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1000 AM MDT TUE JUN 19 2001

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS     ARAPAHOE     BOULDER   CLEAR CREEK   DENVER       DOUGLAS
ELBERT    GILPIN       GRAND     JACKSON       JEFFERSON    LARIMER
LINCOLN   LOGAN        MORGAN    PARK          PHILLIPS     SEDGWICK
SUMMIT    WASHINGTON   WELD

SYNOPSIS:  A MOIST...BUT STABLE AIRMASS WILL REMAIN FIRMLY
ENTRENCHED ACROSS THE EASTERN PLAINS TODAY WHICH WILL PRECLUDE ANY
POSSIBILITY OF THUNDERSTORMS EAST OF THE MOUNTAINS.  HOWEVER...
ENOUGH CLEARING WILL OCCUR OVER THE MOUNTAINS TO ALLOW THUNDERSTORMS
TO DEVELOP ALONG THE EAST SIDE OF THE DIVIDE THIS AFTERNOON.  SOME
OF THESE STORMS WILL MOVE INTO THE FOOTHILLS BY LATE AFTERNOON...BUT
WILL STAY OUT OF THE FRONT RANGE AND PLAINS ENTIRELY.

SPOTTER ACTIVATION IS NOT EXPECTED TODAY.

The radar

The Denver radar (KFTG), 71 km away, was scanning. The volume nearest the first event began at 19:30 UTC.

Open the radar archive at this moment

Event by event

4 hail. Local standard time, as filed.

Hail, Jefferson

When: June 19, 12:30 PM MST
Where: Jefferson County, Conifer
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 39.517, -105.300

Hail, Jefferson

When: June 19, 12:30 PM MST
Where: Jefferson County, 5 mi S of Conifer
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 39.450, -105.300

Hail, Jefferson

When: June 19, 12:55 PM MST
Where: Jefferson County, 1 mi S of Conifer
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 39.500, -105.300

Hail, Park

When: June 19, 2:05 PM MST
Where: Park County, 2 mi N of Bailey
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 39.433, -105.467

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Colorado in 2001 Every state in 2001 This day in weather history Warnings in Colorado, June 2001

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: 5252485, 5252487, 5252486, 5252488.