Areas affected: Carquinez Strait and Delta; Central Sacramento Valley; Motherlode; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills, Sacramento Valley; Northern Sacramento Valley; Northern San Joaquin Valley; Southern Sacramento Valley
Instructions: Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.
Message summary: ...Hot Weather is Expected Across Northern California through
Thursday... .The first significant heat wave of the season will occur this
week. Daytime highs will be in the triple digits for most Valley
locations, especially Tuesday through Thursday. Overnight
temperatures will remain warm and offer little relief. Moderate
to very high heat risk is expected, which means there will be
increasing chances for heat related illnesses. Be sure to
practice heat safety. ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT
THURSDAY... * WHAT...Dangerous heat with afternoon highs between 97 and 105
for the Valley, 95 to 105 for the Delta, and 95 to 100 for the
Foothills. * WHERE...Northern Sacramento Valley, Central Sacramento Valley,
Southern Sacramento Valley, Carquinez Strait and Delta,
Northern San Joaquin Valley, Mountains Southwestern Shasta
County to Western Colusa County, Northeast
Foothills/Sacramento Valley and Motherlode. * WHEN...Now until 7 PM PDT Thursday. * IMPACTS...Heat related illnesses such as heat exhaustion and
heat stroke can occur due to prolonged exposure to hot
temperatures, including the general population. People most
vulnerable include those who are spending lots of time
outdoors, those without air conditioning, young children, the
elderly and those with chronic ailments. * ADDITIONAL DETAILS...Local rivers and streams are running fast
and cold. Cold water safety should be practiced when on and
near the water. ...view the complete message
Areas affected: Greater Lake Tahoe Area; Lassen-Eastern Plumas-Eastern Sierra Counties; Mono; Surprise Valley California
Message summary: ...High Confidence in Early Summer Heatwave for This Week... Unusually warm temperatures are forecast Tuesday through Friday
of this week as summer-like high pressure builds over the region. * First real heat of the summer season for several days in a row
could lead to heat health impacts for vulnerable populations and
those outdoors for extended periods of time. Prepare now to do
outdoor activities in the morning and have a cool place to go
during the afternoons. * High temperatures 20 degrees above normal could exceed a few
daily records. Peak heat is projected Wednesday and Thursday
with valleys well into the 90s and mountain communities well
into the 80s. Friday could have similar heat; however, more
clouds and thunderstorms could limit how hot it gets. * Afternoon thunderstorms will become a feature starting Tuesday,
especially over the high terrain, but storms into far western
Nevada cannot be ruled out. Be prepared for lightning, downpours,
sudden temperature drops, small hail, and strong outflow winds.
Storms could impact outdoor recreation along with any outdoor
pandemic response facilities. More numerous storms are possible
on Friday and Saturday.
Take some time over the next few days to review heat and
thunderstorm safety online from the National Weather Service.
There is plenty of material out there and it has been a while
since we have experienced either weather hazard in the region.
weather.gov/lightning ...view the complete message