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National Park Alerts

639 active alerts across the National Park Service — closures, hazards and cautions, most urgent first. Browse the full park directory instead.

CautionHarmful Algal Blooms Occurring in Lake Richie and Intermediate Lake
MI

Blooms are tested for toxin levels and monitored. Toxin levels are consistently low on Isle Royale. It is not recommended to filter water in any areas where there is surface scum, strong odors, or other evidence of a significant bloom. Blooms move around depending on wind and rain – filter water from places where blooms are not present or a different water source. It is low risk to filter water from relatively clear areas of an impacted water source.

CautionIsland Mine Campground Stream Low
MI

The stream has very little water flow. Campers should bring enough water to Island Mine or plan on collecting water at Carnelian Beach to the south. 

CautionAcadian Cultural Center Temporarily Closed
LA

The Acadian Cultural Center in Lafayette is temporarily closed due to HVAC issues. Join us at the Prairie Acadian Cultural Center in Eunice for programs and events 5 days a week, Tuesday through Saturday.

CautionBarataria Visitor Center and Trails are Closed
LA

Because of upcoming demolition and construction of the trails and Visitor Center, all trails at the Barataria Preserve and the Visitor Center are closed, with the exception of Twin Canals Trail. This is a day-use area only with no restrooms. Visitor services are relocated to the Wetlands Education Center and trails at 4917 City Park Drive, Jean Lafitte, 70067. Rangers will be on site Wednesdays and Thursdays 10 am to 2 pm for programming and ranger talks at the Town of Lafitte's Civic Center.

CautionPoor Air Quality
OR

Due to wildfires in the region around the park visitors should expect varying levels of poor air quality due to smoke. For current air quality check the fire and smoke map here: https://fire.airnow.gov/

CautionInaccurate Third-Party Apps
CA

Some third-party hiking apps are providing inaccurate trail and safety information to users. Please use the official NPS app for accurate information.

CautionOasis of Mara Trail Partial Closure
CA

Due to a heavy flooding event, the Oasis of Mara Trail is closed past the Oasis.

CautionCompost Toilet Removal at KAHO
HI

Beginning Monday, August 10, crews will be removing the compost toilet located on the trail between the Petroglyph Boardwalk and ʻAiʻōpio. Work is expected to last approximately two weeks. The trail will remain open during this time. Visitors should use caution when passing through the work area and be aware of equipment, crews, and construction noise. Thank you for your patience and cooperation.

CautionIncreased Logging Traffic Along Swift Brook Road
ME

Be alert for logging trucks along Swift Brook Road between the monument boundary and the start of the Loop Road. Logging trucks will be transporting logs on Swift Brook Road to Roberts Road. Logging trucks ALWAYS have the right of way. Keep your headlights on. Never stop on roads or bridges. Pull over to the side of the road to allow trucks to pass by.

CautionUse Caution in and around Pedersen Lagoon
AK

On August 7, 2024, a landslide triggered tsunami washed over portions of Pedersen Lagoon near Aialik Bay (59.8842N, -149.7309W). We recommend caution for those visiting the area in and around Pedersen Lagoon. Click more for additional information.

CautionPark Wide Caution
SC

Visitors should exercise caution when hiking areas of the park. Hazards on trails and in forested areas such as hanging tree limbs, debris on the ground, and washed-out sections of trails and bridges are possible.

CautionHarmful Algae Bloom
AZ,NV

A Harmful Algae Bloom has been confirmed in recent water samples taken from the Nelson's Landing and the Cottonwood Cove areas on Lake Mohave. To reduce health risks, the National Park Service recommends recreators limit body contact with these waters when algae is present. Please click here for pictures of this dangerous cyanobacteria and contact the Park at 702-293-8990 for updates on this advisory.

CautionBacteria Levels at Arizona Hot Springs
AZ,NV

Fecal bacteria in water samples taken from Arizona Hot Springs frequently reach high levels, which can transmit human diseases. To reduce health risks, the National Park Service recommends recreators limit body contact in these waters, clean after use, and to never put your head under water at hot springs. Please contact the Park at 702-293-8990 for updates on this advisory.

CautionSmokey air from local wildfires
WA

Current air quality is being influenced by local fires and can change in an instant. Check https://www.airnow.gov/ for specific air quality index (AQI) information for your favorite spot at Lake Roosevelt National Recreation Area.

CautionFire Restrictions in Effect
CA

Due to high fire danger, fire restrictions are in effect in all areas of Lassen Volcanic National Park. Building, maintaining, attending, or using open fires, campfires, or stove fires is prohibited, including charcoal. Self-contained propane or petroleum camp stoves are permitted.

CautionFire Restrictions in Effect
CA

All campfires and open flames are prohibited throughout the monument, including in Indian Well campground. Devices that burn wood, charcoal, pellets or biomass are not allowed. Gas or pressurized stoves (propane, butane or similar are permitted if they have a shut-off valve.

CautionWarning about GPS Systems!
SD

Vehicle Navigation Systems and GPS units may provide inaccurate information—sending drivers the wrong way on one-way roads, leading them to dead ends in remote areas, or sending them on roads which are impassable. Use the Interstate exits for wayfinding.

CautionFire restrictions in place
CA

Fire restrictions are in place at Mojave National Preserve and Castle Mountains National Monument. Wood and charcoal fires are not permitted. Most camp stoves are. See fire restriction order for additional details.

CautionDo not pick up hitchhikers
CA

Do not pick up hitchhikers. Please report their locations to law enforcement by calling 911.

CautionRoad damage possible throughout park
CA

Use caution when driving through Mojave National Preserve. Widespread storms have potentially flooded or damaged roads throughout the preserve.

CautionVisiting During Monsoon Season (July-September)
AZ

All park trails are closed for 30 minutes following any lightning strikes five miles or less from the park. This includes Montezuma Well and the trail to see Montezuma Castle. Please check the forecast ahead of your visit.

CautionPassaic River Bridge Trail (Teal Trail) Closed
NJ

The Passaic River Bridge Trail is closed between Tempe Wick Road and the Cross Estate in the New Jersey Brigade area due to construction of a new bridge.

CautionJockey Hollow Outer Blue Loop and a Section of Primrose Trail Closed
NJ

Following storms on 7/3/2026, many park trails were closed due to blowdown of trees and hazardous conditions. As of 7/27/2026 most trails are passable. The Mount Kimble Trail (Outer Blue Loop) remains closed as well as a section of the Primrose Trail (Red Trail). Please check in at the Visitor Center for more information and take caution as summer storms continue to cause tree falls. Report any fallen trees to a Park Ranger.

CautionPassaic River Trail Bridge washed out
NJ

Tropical Storm Ida washed out the Passaic River bridge on the Patriot's Path Trail south of Tempe Wick Road. This area is a known habitat of the endangered wood turtle, so do not wade, walk, or let your dog run in the river at this location.

CautionAir quality impacted by wildfire smoke.
WA

Smoke from regional wildfires is affecting air quality in the park. When air quality is a concern: 1. monitor air quality and smoke forecasts; 2. assess your own sensitivity to poor air quality, and the sensitivity of others in your group; 3. adjust outdoor activities as needed.

CautionBe cautious around park rivers & learn how to cross safely!
WA

Many hikers underestimate the power of moving water. Regardless of your knowledge, skills, and experience use these pointers in making wise decisions before attempting to cross a river.

CautionParkwide Fire Ban in effect until further notice beginning June 26
WA

Beginning Friday 6/26/26 until rescinded, a parkwide fire ban is implemented for all campfires & the ignition of wood, briquettes, or any fuel in fire pits, fire pans, & BBQ grills.

CautionAuto-Theft Warning - Only Bring What You Need to the Park
CA

You can prevent vehicle break-ins in parking lots and scenic overlooks. Before leaving your car for even a short period of time: 1) Remove all valuables, 2) Lock your doors. 3) Take your wallets, purses, backpacks, keys, key fobs, cell phones, and electronics with you. Read article for more details.

CautionTemporary Partial Closure Redwood Creek Trail August 19 - Sept 4
CA

A section of the boardwalk along the Redwood Creek Trail will be closed from Wednesday, August 19 through Friday, September 4. The closure area spans from just past Cathedral Grove to the junction with the Fern Creek Trail. A detour will be in place.

CautionWeather Advisory and Storm Warnings
AZ

The park may have delayed openings or closures in the event of severe weather. Travel may not be recommended during these times. Please check local weather forecasts. We appreciate your understanding.

CautionPark Wide Caution
SC

Visitors should exercise caution when hiking areas of the park that have opened since Hurricane Helene. Hazards on trails and in forested areas such as hanging tree limbs, debris on the ground, and washed-out sections of trails and bridges are possible.

CautionLife Jackets Required!
NE

By Nebraska State law, all children 13 years old and younger must WEAR a USCG approved life jacket to float the Niobrara NSR. Anyone over 13 years old must HAVE a life jacket. If you are renting equipment, your outfitter will provide them.

CautionBe Aware of Break-ins along State Route 20
WA

Prevent smashed windows and theft. Break-ins are not uncommon at trailheads along State Route 20. Remove your valuables and electronics and take associated electronic cords.

CautionDiablo Lake Boat Launch Inaccessible to Powerboats
WA

Due to silt accumulation, the Diablo Lake boat launch at Colonial Creek South Campground is not usable for launching most powerboats. Expect shallow or no water at the launch ramp and the possibility of needing to carry your boat to or from the water.

CautionStehekin Flash Flood and Debris Flow Area
WA

The Stehekin area is prone to flooding, which increases in a post-fire environment. Know before you go – visit the Post Fire Safety page for information on what to do in a flash flood and debris flow area

CautionRiver Trail periodically closed under I-16
GA

The section of the River Trail beneath Interstate 16 is closed during bridge construction when pedestrian safety is at risk and remains open when no significant hazards are present.

CautionFull Burn Ban Begins August 7
WA

Due to increased fire activity and dry vegetation, all campfires will be prohibited starting on August 7. This includes wilderness, backcountry, non-developed and developed areas, and coastal beaches. Propane and gas stoves are allowed, if operated at least three feet away from flammable vegetation and forest litter.

CautionStaircase Developed Area is Open, Use Caution in Burned Areas
WA

The Staircase developed area is open. The surrounding wilderness areas will remain closed as repair and recovery efforts continue. Use extreme caution when entering burned areas. Burned landscapes may contain falling trees and branches, loose boulders, unstable ground, stump holes, landslides, and debris flows. Changing conditions such as wind, rain, or storms can rapidly trigger hazards. Learn more on our Fire Conditions and Updates page.

CautionPozo Nuevo Road to Bates Well Ranch High Clearance, 4-Wheel Drive Only
AZ

High Clearance, 4-wheel drive is required from where Pozo Nuevo Road begins along South Puerto Blanch Drive to Bates Well Ranch area. The road is washed out in areas. Bates Well Ranch is still accessible from the north on Darby Well Road.

CautionFeral Dogs May Be Seen in Organ Pipe Cactus National Monument
AZ

Feral dogs may be present at the Twin Peaks Campground and around the Kris Eggle Visitor Center. Visitors should not attempt to feed or water these dogs or approach them in any way as they may carry disease or become hostile.

CautionRiver Ferry at Akers (on State Highway K) CLOSED until further notice
MO

The Akers Ferry on State Highway K will not be in service until further notice.

CautionCanine distemper is believed to be present in the park.
TX

Contact with saliva from wild animals can transmit distemper to pets, including from but not limited to water bowls, food bowls, trash etc. Distemper is not a threat to humans but can be deadly to pets. Ensure your pets are vaccinated or keep them home.

CautionOverlook Park Parking Lot - Vehicles Must Be Parked in a Designated Spot
NJ

Parking is extremely limited on weekends & event days. Overflow parking is available at the Paterson Museum, located at 2 Market Street. On weekends only, additional parking is available at the lot across from the Museum.

CautionBe City Smart: Take precautions to secure your vehicle and valuables.
NM

This is an urban park. Don't hide valuables inside your car. Carry items with you on hike. Lock your vehicle and set car alarm. Report suspicious persons loitering/peeking in cars. Call 928-638-7805

CautionHot Conditions
CA

Limit strenuous hiking to early morning and late evening hours. Expect temperatures in the High Peaks and Chalone Peak to be at least 10 degrees hotter than parking areas. Drink plenty of water and carry at least one liter of water for each hour of hiking. Bring salty snacks, a hat, and sunscreen for the hike. Know the signs and symptoms of heat related illnesses. In case of a heat related emergency get to a cool place and seek help immediately.

CautionFire Danger VERY HIGH
CA

Wood-burning fires and charcoal grills are prohibited. Propane and gas stoves allowed only in campground and picnic areas for cooking food. No smoking on trail. No roadside parking. Fireworks are always prohibited.

CautionHeat Alert - Temperatures May Be Higher Than Forecast
CA

Actual temperatures in the park may be up to 6℉ (3 ℃) higher than forecasts provided by the National Weather Service (NWS). Temperatures in rocky, exposed areas may be up to 10℉ (6 ℃) hotter than the actual temperature. Please plan accordingly, stay hydrated, limit strenuous activity during the hottest parts of the day, and be prepared for extreme heat conditions.

CautionPossible Bridge Closure
MN

The Circle Trail bridge under Winnewissa Falls may be closed temporarily due to flooding caused by spring rain. Please pay attention to signage posted in the Visitor Center and at the bridge. The rest of the park and Circle Trail remain open.

CautionAuto-Theft Warning - Only Bring What You Need to the Park
CA

You can prevent vehicle break-ins in parking lots and scenic overlooks. Before leaving your car for even a short period of time: 1) Remove all valuables, 2) Lock your doors. 3) Take your wallets, purses, backpacks, keys, key fobs, cell phones, and electronics with you. Read article for more details.

CautionRoad Construction Near the Park
IL

There is road construction near the park visitor center along 111th St. and S. Cottage Avenue. Please use caution and allow extra travel time when visiting. Construction is expected to last through the fall. In addition, on occasion the vehicle entrance for parking at 610 E. 111th street is limited to one lane.

Source: National Park Service.