A slow moving pacific storm system, ejecting from the Desert Southwest, brought a period of unsettled weather to Northeast Colorado.  During the 3-day period from May 3rd to May 5th, locally heavy snow was reported over parts of the Front Range Foothills.  Storm totals included: 15 inches near Conifer, 14.5 inches west of Jamestown, 13.5 inches; 6 miles southwest of Evergreen, and 12.5 inches at Pine Junction.  Severe thunderstorms, producing large hail and several small short-lived tornadoes, occurred during the period as well.  No damage was reported with any of the tornadoes.
In addition, lightning struck a residence in Jefferson County.  The roof of the house was hit, causing the attic to catch on fire.  The fire was confined to the one room; there were no injuries.  At Denver International Airport, lightning also struck a United Airlines jet as it was pushing away from the gate.  The passengers were taken off the jet and put on another plane.

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:59:00 to 04-MAY-07 19:59:00 (MST-7)
Location: GENOA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 20:25:00 to 04-MAY-07 20:25:00 (MST-7)
Location: SHAW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in JEFFERSON & W DOUGLAS COUNTIES ABOVE 6000 FEET / GILPIN / CLEAR CREEK / NE PARK COUNTIES BELOW 9000 FEET, COLORADO
From 04-MAY-07 18:00:00 to 07-MAY-07 06:00:00 (MST-7)
Reported by: Trained Spotter

Storm totals included:  15 inches near Conifer, 13.5 inches; 6 miles southwest of Evergreen, and 12.5 inches at Pine Junction.

Tornado in WELD, COLORADO
From 03-MAY-07 16:29:00 to 03-MAY-07 16:29:00 (MST-7)
Location: PIERCE
Tornado F-scale: EF0
Reported by: Public

A brief tornado produced some damage to trees.

Hail in PHILLIPS, COLORADO
From 04-MAY-07 22:43:00 to 04-MAY-07 22:43:00 (MST-7)
Location: HOLYOKE ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LOGAN, COLORADO
From 04-MAY-07 22:43:00 to 04-MAY-07 22:43:00 (MST-7)
Location: DAILEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in WELD, COLORADO
From 03-MAY-07 16:58:00 to 03-MAY-07 16:58:00 (MST-7)
Location: PURCELL
Tornado F-scale: EF0
Reported by: Law Enforcement

A small tornado touched down in open country but did no damage.

Tornado in MORGAN, COLORADO
From 03-MAY-07 19:20:00 to 03-MAY-07 19:20:00 (MST-7)
Location: NARROWS
Tornado F-scale: EF0
Reported by: Trained Spotter

A small tornado touched down in open country but did no damage.

Tornado in ARAPAHOE, COLORADO
From 04-MAY-07 18:00:00 to 04-MAY-07 18:00:00 (MST-7)
Location: DEER TRAIL
Tornado F-scale: EF0
Reported by: Trained Spotter

A small tornado touched down in open country but did no damage.

Hail in LINCOLN, COLORADO
From 04-MAY-07 20:55:00 to 04-MAY-07 20:55:00 (MST-7)
Location: HUGO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PHILLIPS, COLORADO
From 04-MAY-07 22:30:00 to 04-MAY-07 22:30:00 (MST-7)
Location: HOLYOKE ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 21:23:00 to 04-MAY-07 21:23:00 (MST-7)
Location: ARRIBA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in LARIMER & BOULDER COUNTIES BETWEEN 6000 & 9000 FEET, COLORADO
From 04-MAY-07 18:00:00 to 07-MAY-07 06:00:00 (MST-7)
Reported by: Trained Spotter

Storm totals included 14.5 inches west of Jamestown, and 11 inches near Nederland.

Tornado in WELD, COLORADO
From 03-MAY-07 17:16:00 to 03-MAY-07 17:16:00 (MST-7)
Location: BARNESVILLE
Tornado F-scale: EF0
Reported by: Trained Spotter

A small tornado touched down in open country but did no damage.

Hail in ELBERT, COLORADO
From 04-MAY-07 20:20:00 to 04-MAY-07 20:20:00 (MST-7)
Location: KUTCH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in WELD, COLORADO
From 03-MAY-07 17:21:00 to 03-MAY-07 17:21:00 (MST-7)
Location: ALDEN
Tornado F-scale: EF0
Reported by: Law Enforcement

A small tornado touched down in open country but did no damage.

Tornado in WELD, COLORADO
From 03-MAY-07 18:50:00 to 03-MAY-07 18:50:00 (MST-7)
Location: BUCKINGHAM
Tornado F-scale: EF0
Reported by: Trained Spotter

A small tornado touched down in open country but did no damage.

Lightning in DENVER, COLORADO
From 05-MAY-07 09:30:00 to 05-MAY-07 09:30:00 (MST-7)
Location: (DEN)DENVER INTL ARP
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning struck a United Airlines jet as it departed the gate at Denver International Airport.

Lightning in JEFFERSON, COLORADO
From 05-MAY-07 15:00:00 to 05-MAY-07 15:00:00 (MST-7)
Location: CONIFER
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning struck a residence in Evergreen.

Hail in PHILLIPS, COLORADO
From 05-MAY-07 11:55:00 to 05-MAY-07 11:55:00 (MST-7)
Location: AMHERST
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, COLORADO
From 04-MAY-07 19:40:00 to 04-MAY-07 19:40:00 (MST-7)
Location: ANTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:52:00 to 04-MAY-07 19:52:00 (MST-7)
Location: SHAW
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:30:00 to 04-MAY-07 19:30:00 (MST-7)
Location: SHAW
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:29:00 to 04-MAY-07 19:29:00 (MST-7)
Location: LIMON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:40:00 to 04-MAY-07 19:40:00 (MST-7)
Location: SHAW
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:45:00 to 04-MAY-07 19:45:00 (MST-7)
Location: GENOA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, COLORADO
From 04-MAY-07 18:15:00 to 04-MAY-07 18:15:00 (MST-7)
Location: LST CHNCE CHENOWETH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:20:00 to 04-MAY-07 19:20:00 (MST-7)
Location: LIMON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINCOLN, COLORADO
From 04-MAY-07 19:22:00 to 04-MAY-07 19:22:00 (MST-7)
Location: LIMON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in LOGAN, COLORADO
From 05-MAY-07 10:57:00 to 05-MAY-07 10:57:00 (MST-7)
Location: ACKERMAN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A small tornado touched down in open country but did no damage.

Hail in WELD, COLORADO
From 03-MAY-07 18:35:00 to 03-MAY-07 18:35:00 (MST-7)
Location: BUCKINGHAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MORGAN, COLORADO
From 03-MAY-07 18:58:00 to 03-MAY-07 18:58:00 (MST-7)
Location: ORCHARD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement