SVRPSR The National Weather Service in Phoenix has issued a * Severe Thunderstorm Warning for... Maricopa County in south central Arizona... * Until 730 PM MST. * At 655 PM MST, severe thunderstorms were located along a line extending from near New River to near Cave Creek to near Desert Ridge Marketplace, moving north at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Scottsdale, New River, Cave Creek, Carefree, Desert Mountain, Camp Creek, Black Canyon City Trailhead, Anthem, and Seven Springs. This includes the following highways... AZ Interstate 17 between mile markers 222 and 241. AZ Route 101 near mile marker 35. AZ Route 74 between mile markers 28 and 30.
FFWPSR The National Weather Service in Phoenix has issued a * Flash Flood Warning for... Maricopa County in south central Arizona... * Until 1000 PM MST. * At 647 PM MST, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Phoenix, Scottsdale, Paradise Valley, North Mountain Park, Piestewa Peak Park, Deer Valley Airport, Desert Ridge Marketplace, Metro Center, Camelback Mountain and Arizona State Fairgrounds. This includes the following highways... AZ Route 202 between mile markers 1 and 2. AZ Route 101 between mile markers 22 and 31. AZ Interstate 17 between mile markers 205 and 214. AZ Route 51 near mile marker 1...and between mile markers 10 and 15...and between mile markers 2 and 4. AZ Interstate 10 between mile markers 144 and 148. AZ Route 303 between mile markers 138 and 139. This includes the following streams and drainages... Apache Wash, Indian Bend Wash, Cave Creek, Skunk Creek, New River and Salt River.
FFWPSR The National Weather Service in Phoenix has issued a * Flash Flood Warning for... Maricopa County in south central Arizona... * Until 745 PM MST. * At 549 PM MST, Doppler radar indicated thunderstorms producing heavy rain in Jackrabbit Wash and Winters Wash. Between 0.5 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Tonopah. This includes AZ Interstate 10 between mile markers 93 and 97. This includes the following streams and drainages... Woodchopper Wash, Dead Horse Wash, Star Wash, Winters Wash, Coyote Wash, Beer Bottle Wash, Centennial Wash, Fourmile Wash, Jackrabbit Wash, Old Camp Wash and Delaney Wash.
FFWPSR The National Weather Service in Phoenix has issued a * Flash Flood Warning for... Maricopa County in south central Arizona... * Until 800 PM MST. * At 500 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. In particular, across SR-238. Between 0.5 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Mobile. This includes AZ Route 238 between mile markers 18 and 27. This includes the following streams and drainages... Waterman Wash and West Prong Waterman Wash.
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of south central Arizona, including the following county, Maricopa. * WHEN...Until 930 PM MST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 618 PM MST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.25 and 0.75 inches of rain have fallen. - This includes the following streams and drainages... Salt River. Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Phoenix, Scottsdale, Tempe, Paradise Valley, Laveen, Downtown Phoenix, Sky Harbor Airport and Arizona State Fairgrounds. - http://www.weather.gov/safety/flood
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of south central Arizona, including the following county, Maricopa. * WHEN...Until 715 PM MST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. * ADDITIONAL DETAILS... - At 406 PM MST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in Centennial Wash. Between 0.5 and 1 inch of rain has fallen. - Centennial Wash is the most likely place to experience minor flooding. This includes the following streams and drainages... Winters Wash, Centennial Wash, Delaney Wash and Arlington Canal. - Some locations that will experience flooding include... mainly rural areas of Maricopa County - http://www.weather.gov/safety/flood
At 638 PM MST, Doppler radar was tracking strong thunderstorms along a line extending from near Deer Valley Airport to near Desert Ridge Marketplace to near Scottsdale Airport. Movement was north at 15 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Phoenix, Scottsdale, Paradise Valley, New River, Cave Creek, Carefree, Deer Valley Airport, Scottsdale Airport, Desert Ridge Marketplace, and Anthem. This includes the following highways... AZ Interstate 17 between mile markers 214 and 237. AZ Route 51 between mile markers 10 and 15. AZ Route 101 between mile markers 22 and 43.
The National Weather Service issues alerts in different categories to indicate the severity of storms and if the public should take immediate action to prevent the loss of life or property or be aware of the potential of the same.
A weather warning is issued when severe weather conditions are occuring or imminent and there is danger to life and/or property. The warning will include what action should be taken including evacuation or shelter in place and should be heeded immediately. Warnings are usually issued for a small, specific area and for a definite period of time.
A weather watch is an alert issued by the National Weather Service when conditions are favorable for the development of severe weather. A weather watch means that severe weather is possible in the area, so it is important to stay tuned to the latest forecasts and be prepared for potential storms.
The purpose of a weather watch is to provide advance warning to people in the affected area so that they can take necessary precautions. It is important to remember that a weather watch does not mean that severe weather will definitely occur, but simply that there is a higher chance of it happening.
If you live in an area where severe weather is common, it may be wise to have a plan in place for what you will do if a storm hits. Make sure you have plenty of food and water stored, as well as flashlights, batteries, and other supplies. You may also want to consider evacuating if necessary.
An advisory means the conditions are likely to occur. These are typically used for less severe weather events like frost or winds but can be used for other types of severe weather.
A red flag warning is issued by the National Weather Service to inform the public, firefighters, and land management agencies that conditions are ideal for wildland fires and any fire which does start could spread rapidly. These are often issued after drought conditions, when humidity is very low and especially when there are high or erratic winds. The possibility of lightning is also a determining factor. Fire fighting agencies often will increase their staffing and equipment resources due to the forecast risk. For the public, a Red Flag Warning often means high fire danger leading to restrictions or bans on outdoor burning including burn piles, burn barrels and campfires. Use of anything which may produce sparks, including outdoor lawn equipment, chainsaws and welding, may be restricted or prohibited.
The weather criteria for fire weather watches and red flag warnings vary with each Weather Service office’s warning area based on the local vegetation type, topography, and distance from major water sources. They usually include the daily vegetation moisture content calculations, expected afternoon high temperature, afternoon minimum relative humidity and daytime wind speed.
An enhanced version of the warning, called extreme red flag warning, may be issued. This means that conditions for fire growth and behavior are extremely dangerous due to a combination of strong winds, very low humidity, long duration, and very dry fuels.