Latest Non-Precipitation Watch/Warning/Advisory by KMTR
Issued 9/26/2020 11:35 AM US/Pacific.
Valid through 9/28/2020 7:00 PM US/Pacific.
wwus76 kmtr 261835
urgent - weather message
national weather service san francisco bay area
1135 am pdt sat sep 26 2020
...increased risk of heat related illness sunday and monday as
high pressure strengthens over the region...
.high pressure is forecast to strengthen over the region from the
eastern pacific ocean and result in an increased risk of heat
related illness from sunday into monday. offshore winds associated
with this high pressure system will amplify these increasing
temperatures by suppressing the afternoon sea breeze and marine
layer while forcing hotter inland air westward towards the coast.
monday is forecast to be hotter than sunday with forecast highs
generally in the mid 90s to low 100s, roughly 15 to 25 degrees
above normal. limited onshore flow is anticipated to return later
monday but is not expected to arrive prior to the peak heating
coastal north bay including point reyes national seashore-
north bay interior valleys-north bay mountains-
san francisco bay shoreline-east bay interior valleys-
east bay hills and the diablo range-santa cruz mountains-
santa clara valley including san jose-
including the cities of san francisco, tamalpais-homestead,
sausalito, santa rosa, south santa rosa, napa, san rafael,
petaluma, novato, rohnert park, angwin, lagunitas-forest knolls,
woodacre, oakland, fremont, hayward, daly city, berkeley,
concord, antioch, livermore, walnut creek, pleasanton, pittsburg,
san ramon, blackhawk, scotts valley, boulder creek, day valley,
and san jose
1135 am pdt sat sep 26 2020
...heat advisory in effect from 11 am sunday to 7 pm pdt monday...
* what...high temperatures are forecast to range from 15 to 25
degrees above normal sunday and monday. inland locations are
forecast to range in the mid 90s to low 100s, locally to mid
100s in the hottest spots. bayshore locations including oakland
and san francisco are forecast to range in the 90s to around
* where...majority of the san francisco bay area.
* when...11 am sunday to 7 pm pdt monday.
* impacts...increased risk of heat related illnesses such as heat
exhaustion and heat stroke can occur due to prolonged exposure
to hot temperatures. people most vulnerable include those who
spend extended periods outdoors, those without air conditioning,
young children, the elderly, and those with chronic illness.
* additional details...monday will be hotter than sunday. offshore
winds will suppress the sea breeze and bring warm to hot
conditions closer than usual to the coast, and in addition, may
push wildfire smoke from the august and red salmon fires back
into the area. limited relief near the coast with sharp
temperature changes only a few miles inland. bayshore
locations, especially those north of the san mateo bridge, will
be the most impacted by the offshore flow during this heat
event. onshore flow is expected to begin returning to the coast
later monday but may not arrive until peak heating has already
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.
Latest Non-Precipitation Watch/Warning/Advisory by KSTO
Issued 9/25/2020 3:22 PM US/Pacific.
Valid through 9/27/2020 8:00 PM US/Pacific.
wwus76 ksto 262145
northern sacramento valley-central sacramento valley-
southern sacramento valley-carquinez strait and delta-
mountains southwestern shasta county to western colusa county-
including the cities of redding, red bluff, chico, oroville,
marysville/yuba city, sacramento, fairfield/suisun,
and alder springs
245 pm pdt sat sep 26 2020
...wind advisory remains in effect from 2 am to 8 pm pdt sunday...
* what...north winds 20 to 30 mph with gusts up to 45 mph...
locally 50 mph expected.
* where...northern sacramento valley, central sacramento valley,
southern sacramento valley, carquinez strait and delta and
mountains southwestern shasta county to western colusa county
* when...from 2 am to 8 pm pdt sunday.
* impacts...gusty winds could blow around unsecured objects.
tree limbs could be blown down and a few power outages may
result. wildfires within the advisory area could have
use extra caution when driving, especially if operating a high
profile vehicle. secure outdoor objects.