Boulder County Evacuating Homes Due to Wildfire

125 homes were evacuated Friday morning and another 29 were placed on pre-evacuation status due to a reported wildfire west of Longmont near the 5000 block of Nelson Road, according to the Boulder County Office of Emergency Management.

The fire was reported by the OEM around 7:40 a.m. A second fire was reported on Wagonwheel Gap Road at around 8:20 a.m. The Boulder County Fairgrounds has opened a large animal evacuation center.

In addition to stirring the fire, high winds have also brought down tree branches onto power lines inside Longmont, causing scattered outages.  As of 8:50 a.m, lines have been reported down at the 1400 block of South Collyer Street, at Gay Street and Price, and at 12th Avenue and Francis Street.  Traffic lights have been reported out at Ken Pratt and Emery Street, Main Street and Quebec, South Hover Street and Boston Avenue, and South Hover Street and Nelson.

If you see a downed power line, move away from it and anything touching it. The ground around a power line can be energized as far as 35 feet away. Please report any downed lines to Longmont Power & Communications at 303-651-8386.


Flood Update for the Berthoud Area

The Flash Flood Emergency is continuing in Berthoud, with three homes reported destroyed and 12 damaged, though the severe weather is delaying damage assessments. The Little Thompson River remains high due to runoff and reservoirs are full, according to authorities.  The Red Cross has activated the Berthoud Community Center as an overnight shelter at 248 Welch St. 


National Weather Service Calling Tornado Watch Over

The tornado watch for the Longmont area has expired according to the NWS.

Follow the National Weather Service for up to date information. 


Not sure what the difference is between Flood Watch, Flash Flood Watch or Warnings?

FEMA and the National Weather Service use the following terms to announce flood information:

Flood Watch: Flooding is possible. Tune in to NOAA Weather Radio, commercial radio, or television for information.

Flash Flood Watch: Flash flooding is possible. Be prepared to move to higher ground. Listen to NOAA Weather Radio, commercial radio, or television for information.

Flood Warning: Flooding is occurring or will occur soon; if advised to evacuate, do so immediately.

Flash Flood Warning: A flash flood is occurring; seek higher ground on foot immediately



The National Weather Service has sent out a flash flood emergency

The National Weather Service has sent  out a flash flood emergency for the following area:  Hwy 66 on south, 55th on the West, Larimer County line on the north, Weld County Line on the East.


The City of Longmont has activated our Emergency Operations Center as a precaution.

The Longmont OEM page is up.  Please watch for updates at www.longmontoem.org

The City of Longmont has activated our Emergency Operations Center as a precaution.  We have experienced some traffic light outages, but most have been fixed.  As a reminder, if the traffic lights are out, you must treat it like a four way stop.  

I’ve attached two weather updates.  A Flash Flood Warning for Larimer, Weld and Boulder County and a river update.  We are monitoring the St. Vrain River and Left Hand Creek.  Flows are listed below. 

Flash Flood Warning for Larimer, Weld, Boulder Counties, CO

Active for next 24 minutes · 

National Weather Service

This alert has been updated.

Posted 16 minutes ago

The Flash Flood Warning remains in effect until 10:15 pm MDT for Southeastern Larimer, Northeastern Boulder and southwestern Weld counties. At 9:19 pm MDT, the thunderstorm producing very heavy rain was located near Berthoud, or 19 miles south of Fort Collins, and was nearly stationary. Radar has indicated between 4 to 6 inches of rain has fallen halfway between Berthoud and Lyons with lesser amounts in the surrounding area between Riverside, Johnstown, Mead and hygiene. Runoff from the area with the heaviest rainfall will flow into Saint Vrain Creek between Lyons and hygiene and also on the little Thompson River southwest of Berthoud and produce flooding. Stream levels along Little Thompson River and Saint Vrain Creek could rise up very quickly.

Some locations that will experience flooding include: Southern Greeley, Longmont, Southwestern Loveland, Evans. Firestone, Johnstown, Milliken, Berthoud, Mead, Platteville. Lyons and Gilcrest.

The storm remains nearly stationary east of Lyons, north to Berthoud.  Around 2 inches of rain is possible in the warned area in the next couple hours.  This rainfall will exacerbate the flooding.

If you live in these areas follow these recommended actions.

Move to higher ground now. Act quickly to protect your life. This is becoming a very dangerous situation.

Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, highways and underpasses. Additionally. Country Roads and farmlands along the banks of creeks, streams and other low lying areas are subject to flooding.




9:22 P.M. update

EOC open and staffed, our focus currently is on continuing the public information campaign and watching the rainfall over the St. Vrain drainage. 

Flood Warning issued until 9:00 tomorrow morning, 4 to 5 inches of rain has fallen in the Lyons area over the St. Vrain drainage.

No significant impacts to the City yet, the gauge at Lyons has risen 600 cfs in the last two hours.

Our concern at this point is flash flooding on the Lefthand and/or St. Vrain.  PD is monitoring both rivers.


Longmont Power & Communications Responding to Small Power Outages

LPC is responding to a number of small power outages caused by the severe weather, mostly due to downed tree limbs. The reports are from the Hygiene area and near Colo. 66 and Hover St.


City of Longmont Severe Weather Updates

City of Longmont Severe Weather Updates 

We will be using this website to continue to post our updates related to the current weather situation in Longmont.

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City of Boulder and Boulder County Social Media Sites:


  • @BoulderCounty (county)
  • @BoulderColorado (city)
  • @BoulderOEM (Boulder City & County Office of Emergency Management)
  • @BoulderCoHHS (Boulder County Housing & Human Services)


  • /bouldercounty (county)
  • /bouldercolorado.gov (city)
  • /boulderoem (Emergency Management)

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