* WHAT...Dangerously hot conditions with high temperatures 95 to 100
degrees. The hottest days are currently expected to be Friday March
20 and Saturday March 21.
* WHERE...Eastern Cochise County below 5000 feet, Upper Gila River
Valley, Upper San Pedro River Valley, and Upper Santa Cruz River
Valley/Altar Valley.
* WHEN...From Thursday morning through Sunday, March 22.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Visitors, seasonal residents and other people
not typically accustomed to or acclimated to extreme heat are
especially urged to take precautions during the hottest hours of
the day and limit outdoor activity.
* WHAT...Dangerously hot conditions with high temperatures 100 to 108
possible. The hottest days are currently expected to be Friday
March 20 and Saturday March 21.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, and Western Pima County.
* WHEN...From Thursday morning through Sunday, March 22.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Visitors, seasonal residents and other people
not typically accustomed to or acclimated to extreme heat are
especially urged to take precautions during the hottest hours of
the day and limit outdoor activity.
* WHAT...Northeast winds 15 to 25 mph with gusts up to 45 mph.
* WHERE...In Arizona, Northwest Deserts and Northwest Plateau. In
California, Cadiz Basin and Eastern Mojave Desert. In Nevada, Las
Vegas Valley, Northeast Clark County, Sheep Range, Southern Clark
County, and Spring Mountains-Red Rock Canyon.
* WHEN...Until 10 PM PST /11 PM MST/ this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph.
* WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort
Mohave, and San Bernardino County-Upper Colorado River Valley.
* WHEN...Until 10 PM PST /11 PM MST/ this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...North winds 20 to 30 mph with gusts up to 50 mph.
* WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort
Mohave, and San Bernardino County-Upper Colorado River Valley.
* WHEN...Until 10 PM PST /11 PM MST/ this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* ADDITIONAL DETAILS...Dangerous boating conditions expected on Lake
Mead, Lake Mohave, and Lake Havasu, with wave heights between 2
and 4 feet. Winds will begin decreasing this evening.
* WHAT...Northeast winds 15 to 25 mph with gusts up to 45 mph.
* WHERE...In Arizona, Northwest Deserts and Northwest Plateau. In
California, Cadiz Basin and Eastern Mojave Desert. In Nevada, Las
Vegas Valley, Northeast Clark County, Sheep Range, Southern Clark
County, and Spring Mountains-Red Rock Canyon.
* WHEN...Until 10 PM PST /11 PM MST/ this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* WHAT...North winds 20 to 30 mph with gusts up to 45 mph are
expected today, with northeast winds 15 to 25 mph with gusts up to
45 mph expected on Saturday.
* WHERE...In Arizona, Northwest Deserts and Northwest Plateau. In
California, Cadiz Basin and Eastern Mojave Desert. In Nevada, Las
Vegas Valley, Northeast Clark County, Sheep Range, Southern Clark
County, and Spring Mountains-Red Rock Canyon.
* WHEN...Until 10 PM PST /11 PM MST/ Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* ADDITIONAL DETAILS...Dangerous crosswinds will exist along
Interstate 15, Interstate 40, AZ State Route 66, and CA State
Route 62. The strongest wind speeds are expected this afternoon
and Saturday, with a lull tonight.
* WHAT...North winds 20 to 30 mph with gusts up to 45 mph expected
today, with gusts up to 55 mph expected on Saturday.
* WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort
Mohave, and San Bernardino County-Upper Colorado River Valley.
* WHEN...Until 10 PM PST /11 PM MST/ Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* ADDITIONAL DETAILS...Dangerous boating conditions expected on Lake
Mead, Lake Mohave, and Lake Havasu, with wave heights between 2
and 4 feet. The strongest wind speeds will occur Saturday, with
slightly slower speeds today and tonight.
* WHAT...North winds 20 to 30 mph with gusts up to 45 mph are
expected today, with northeast winds 15 to 25 mph with gusts up to
45 mph expected on Saturday.
* WHERE...In Arizona, Northwest Deserts and Northwest Plateau. In
California, Cadiz Basin and Eastern Mojave Desert. In Nevada, Las
Vegas Valley, Northeast Clark County, Sheep Range, Southern Clark
County, and Spring Mountains-Red Rock Canyon.
* WHEN...Until 10 PM PST /11 PM MST/ Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* ADDITIONAL DETAILS...Dangerous crosswinds will exist along
Interstate 15, Interstate 40, AZ State Route 66, and CA State
Route 62. The strongest wind speeds are expected this afternoon
and Saturday, with a lull tonight.
* WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected
today, with gusts up to 55 mph expected on Saturday.
* WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort
Mohave, and San Bernardino County-Upper Colorado River Valley.
* WHEN...Until 10 PM PST /11 PM MST/ Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Instances of blowing dust near dry lakebeds may result in reduced
visibility.
* ADDITIONAL DETAILS...Dangerous boating conditions expected on Lake
Mead, Lake Mohave, and Lake Havasu, with wave heights between 2
and 4 feet. The strongest wind speeds will occur Saturday, with
slightly slower speeds today and tonight.
* WHAT...Southwest winds 20 to 30 mph with gusts from 40 to 50 mph.
* WHERE...Little Colorado River Valley, Mogollon Rim, Painted Desert,
White Mountains, and Black Mesa Area.
* WHEN...From 11 AM this morning to 8 PM MST this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Travel
could be difficult, especially for high profile vehicles.
* WHAT...Southwest winds from 20 to 30 mph, gusts from 40 to 50 mph.
* WHERE...Little Colorado River Valley, Mogollon Rim, Painted Desert,
White Mountains, and Black Mesa Area.
* WHEN...From 11 AM to 8 PM MST Monday.
* IMPACTS...Gusty winds will blow around unsecured objects. Travel
could be difficult, especially for high profile vehicles.
* WHAT...Southwest winds 20 to 30 mph with gusts 40 to 50 mph.
* WHERE...Little Colorado River Valley, Mogollon Rim, Painted Desert,
White Mountains, and Black Mesa Area.
* WHEN...From 11 AM to 8 PM MST Monday.
* IMPACTS...Gusty winds will blow around unsecured objects. Travel
will be difficult, especially for high profile vehicles.
* WHAT...Snow expected. Total snow accumulations between 4 and 8
inches above 6000 feet and between 2 and 5 inches above 4000 feet.
Winds gusting as high as 35 mph.
* WHERE...In Arizona, northern Mohave County above 4000 feet. In
Nevada, Lincoln County above 4000 feet.
* WHEN...Until 4 AM PST / 5 AM MST Friday.
* IMPACTS...Roads will likely become slick and hazardous. Travel
could be very difficult along Highway 93 north of Pioche and State
Route 389 through Pipe Spring National Monument.
* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph
expected. Some areas in western and northwest parts of the Las
Vegas Valley could see wind gusts to around 55 mph.
* WHERE...In Arizona, Northwest Deserts and Northwest Plateau. In
California, Cadiz Basin and Eastern Mojave Desert. In Nevada, Las
Vegas Valley, Northeast Clark County, and Southern Clark County.
* WHEN...Until 4 AM PST /5 AM MST/ Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Southwest winds 20 to 30 mph with gusts 40 to 55 mph.
* WHERE...Little Colorado River Valley in Apache County and White
Mountains.
* WHEN...From midnight tonight to 5 PM MST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could snap resulting in a few power outages. Travel will be
difficult, especially for high profile vehicles.
* WHAT...Snow showers will develop by early evening, becoming heavy
at times through the night and then tapering off around daybreak
Friday. Most areas will see general accumulations 2 to 4 inches,
locally more near Forest Lakes. Southwest winds gusting as high as
50 mph will create areas of blowing and drifting snow,
significantly reducing visibility.
* WHERE...Eastern Mogollon Rim.
* WHEN...From 8 PM this evening to 8 AM MST Friday.
* IMPACTS...Roads, and especially bridges, will likely become slick
and hazardous. Periods of moderate to heavy snowfall will create
snow-covered roads and hazardous driving conditions. Gusty winds
could bring down tree branches.
* ADDITIONAL DETAILS...
Forecast snowfall amounts from 8 PM MST Today to 8 AM MST Friday...
Forest Lakes: 2 to 4" Pine-Strawberry: 2 to 4"
Heber-Overgaard: 1 to 2"
* WHAT...Snow showers will develop by late afternoon, becoming heavy
at times through the night and then tapering off before daybreak
Friday. Most areas will see general accumulations 2 to 4 inches,
locally more over the North Rim. Southwest winds gusting as high as
45 mph will create areas of blowing and drifting snow,
significantly reducing visibility.
* WHERE...Grand Canyon Country.
* WHEN...From 5 PM this afternoon to 5 AM MST Friday.
* IMPACTS...Roads, and especially bridges, will likely become slick
and hazardous. Even light snowfall amounts can create hazardous
driving conditions due to slippery, snow-covered roads.
* ADDITIONAL DETAILS...
Forecast snowfall amounts from 5 PM MST Today to 5 AM MST Friday...
GCNP South Rim: 2 to 4" GCNP North Rim: 4 to 6"
* WHAT...Snow showers will develop later today, becoming heavy at
times through the evening, before tapering off a few hours after
Midnight MST. Most areas will see general accumulations 4 to 8
inches, locally more south of Jacob Lake. Southwest through west
winds gusting as high as 40 mph will create areas of blowing and
drifting snow.
* WHERE...Kaibab Plateau.
* WHEN...From 5 PM this afternoon to 5 AM MST Friday.
* IMPACTS...Roads, and especially bridges, will likely become slick
and hazardous. Travel is not recommended as heavy snowfall and low
visibility will create dangerous driving conditions.
* ADDITIONAL DETAILS...
Forecast snowfall amounts from 5 PM MST Today to 5 AM MST Friday...
Fredonia: 2 to 4" Jacob Lake: 6 to 8"
* WHAT...Snow showers will develop by late afternoon, becoming heavy
at times through the night and then tapering off before daybreak
Friday. Most areas will see general accumulations 2 to 4 inches.
Southwest winds gusting as high as 45 mph will create areas of
blowing and drifting snow, significantly reducing visibility.
* WHERE...Coconino Plateau and Yavapai County Mountains.
* WHEN...From 5 PM this afternoon to 5 AM MST Friday.
* IMPACTS...Roads, and especially bridges, will likely become slick
and hazardous. Periods of moderate to heavy snowfall will create
snow-covered roads and hazardous driving conditions. Gusty winds
could bring down tree branches.
* ADDITIONAL DETAILS...
Forecast snowfall amounts from 5 PM MST Today to 5 AM MST Friday...
Chino Valley: 0" Prescott Valley: Trace to 1"
Prescott: 1 to 2" Seligman: Trace to 1"
Valle: 2 to 4"