Weather Alert in Arizona
Red Flag Warning issued April 25 at 1:53PM MST until April 26 at 7:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Chuska Mountains and Defiance Plateau; Little Colorado River Valley in Coconino County; Little Colorado River Valley in Navajo County; Little Colorado River Valley in Apache County; White Mountains; Northeast Plateaus and Mesas South of Hwy 264
DESCRIPTION: MST Fri Apr 25 2025/ ...RED FLAG WARNING IN EFFECT FROM 10 AM MST /11 AM MDT/ TO 7 PM MST /8 PM MDT/ SATURDAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR THE LITTLE COLORADO RIVER VALLEY, NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264, WHITE MOUNTAINS, CHUSKA MOUNTAINS, AND THE DEFIANCE PLATEAU... ...RED FLAG WARNING IN EFFECT FROM 10 AM MST /11 AM MDT/ TO 7 PM MST /8 PM MDT/ SUNDAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR THE LITTLE COLORADO RIVER VALLEY, NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264, WHITE MOUNTAINS, CHUSKA MOUNTAINS, AND THE DEFIANCE PLATEAU... The National Weather Service in Flagstaff has issued a Red Flag Warning due to strong winds and low relative humidity, which is in effect from 10 AM MST /11 AM MDT/ to 7 PM MST /8 PM MDT/ Saturday. A Red Flag Warning has also been issued from 10 AM MST /11 AM MDT/ to 7 PM MST /8 PM MDT/ Sunday. The Fire Weather Watches are no longer in effect. * AFFECTED AREA...Locations near Alpine, Buffalo Pass, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kykotsmovi, Pinetop- Lakeside, Saint Johns, Show Low, Snowflake-Taylor, Tuba City, Whiteriver, Window Rock and Winslow. This includes portions of the Apache-Sitgreaves National Forest. * WINDS...Southwest 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...The combination of gusty winds and low humidity can cause fires to rapidly grow in size and intensity before first responders can contain them.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring or are imminent. A combination of strong winds and low relative humidities can contribute to extreme fire behavior. Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/flagstaff for updates and livingwithfire.org for preparedness tips. Please notify field crews of this Red Flag Warning.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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