Weather Lookup

Key Messages

* isolated thunderstorm activity will be limited to mohave county through wednesday, with things drying out area-wide during the second half of the week.

* above-normal temperatures persist, with dangerous and potentially record-breaking temperatures beginning thursday.

Discussion

Through monday.

Remnant mesoscale convective vortex continues to track northward across the colorado plateau of northern arizona this afternoon. This feature will continue to spark renewed thunderstorm activity that may skirt eastern mohave county and parts of canyon country through the remainder of the evening hours. Similar conditions will remain in place tomorrow for drier conditions overspread the entire region the remainder of the week into the weekend.

As the region dries out, an expansive area of high pressure will build westward, with a 600dm ridge building into the southwest by friday and saturday. This will result in temperatures climbing to near record territory by late in the week, with the heat persisting into early next week. Daily and monthly all-time records may be challenged during this period with widespread high to extreme heat risk expected across the lower elevations. An extreme heat warning remains for all of our valley locations from thursday through sunday, with heat advisories for the higher mountain zones. Indications are the the ridge will begin to break down next week an a return of monsoonal moisture may creep back into the region with temperatures trending closer to normal and isolated thunderstorm chances returning.

Aviation

For harry reid...for the 06Z forecast package...southwesterly winds with speeds under 10 knots should start to take a southeasterly direction in the morning after sunrise. Sustained speeds increase to around 10 knots with moderate gusts between 15 and 20 knots by late morning, shifting back to the southwest in the afternoon. Speeds fall to less than 10 knots after sunset. Temperatures increase to at least 100 degrees by 18Z.

For the rest of southern nevada, northwest arizona and southeast california...for the 06Z forecast package...wind speeds should decrease to less than 10 knots for most locations tonight. Winds will generally favor a southerly to southwesterly direction by wednesday afternoon, including gusts between 15 and 20 knots in the las vegas valley and colorado river valley. Gusty westerly winds return to kdag in the evening. Mostly clear skies are expected through the taf period.

Climate

Numerous climate locations have a forecast high temperature and/or forecast warm low temperature within 3 degrees of the daily record.

The table below shows the daily record maximum temperature and the year the record was last set. An asterisk (*) denotes which records are in jeopardy (within 3 degrees of the forecast).

Max thu, jul 30 fri, jul 31 sat, aug 1 sun, aug 2 record(yr) record(yr) record(yr) record (yr)

Las vegas 114(1978)* 115(1978)* 116(1979)* 115(1979)* bishop 105(2020)* 109(2000)* 108(2020)* 108(2020)* needles 120(2020) 121(2020)* 121(1993)* 120(1993)* daggett 114(2000) 113(2020)* 115(1995)* 117(1986)* kingman 110(2020) 112(2020)* 106(2020)* 105(1918)* desert rock 109(2000)* 109(1996)* 109(1993)* 109(1993)* death valley 127(1995) 125(2020)* 127(2017)* 126(1993)*

The table below shows the daily record warm minimum temperature and the year the record was last set. An asterisk (*) denotes which records are in jeopardy (within 3 degrees of the forecast).

Warm min thu, jul 30 fri, jul 31 sat, aug 1 sun, aug 2 record(yr) record(yr) record(yr) record (yr)

Las vegas 89(2019)* 88(2020)* 92(2020)* 91(2024)* bishop 72(2022) 67(2018) 71(2007) 71(2007) needles 94(2019) 94(1925) 95(1969) 92(1980)* daggett 86(2016) 85(2018) 84(2000)* 83(2018)* kingman 83(1972) 83(1914) 82(1914)* 82(2008)* desert rock 81(2015) 82(2016) 83(2000) 86(2000) death valley 103(2018) 103(2018) 106(1920) 100(2024)*

Spotter Information Statement

Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.