Marine Weather and Tide Forecast for South Lake Tahoe, CA
July 2, 2024 10:44 PM PDT (05:44 UTC) Change Location
 | Sunrise 5:37 AM Sunset 8:30 PM Moonrise 1:31 AM Moonset 4:52 PM |
FXUS65 KREV 021931 AFDREV
Area Forecast Discussion National Weather Service Reno NV 1231 PM PDT Tue Jul 2 2024
SYNOPSIS
* High pressure brings a prolonged heatwave starting on Wednesday through early next week.
* Afternoon highs will be 10-20 degrees above average by the weekend resulting in a moderate to major HeatRisk.
* It will remain very dry with typical afternoon breezes, and a very low chance, less than 5%, for precipitation in the weekend.
DISCUSSION
The Pacific ridge that has been lurking off the coast will be the main weather feature to concern us this week into next. As the ridge migrates over the Great Basin, we will see an impactful warming trend building in. While today appears to be our brief break ahead of the warmup, highs in western Nevada valleys will top out in the mid to upper 90s for most locations. Sierra valleys will even see upper 80s to low 90s in some locations today. This is the literal warm-up to our upcoming warmup.
All guidance is in agreement that this will be a hot stretch of days for our July 4th holiday into the holiday weekend. Western Nevada valleys are in for a long duration of 100+ degree days, and as for the Sierra communities, expect 90 degrees or greater.
Probabilities of over 105 degrees in western NV are 40-80% over the weekend. For this reason, an Excessive Heat Watch is in effect from Saturday through Wednesday morning.
It sure will be tempting to jump into cooler waters of area lakes and streams. Expect waters to be comparatively chilly, possibly cold enough for shock. Be sure to wear buoyant life vests near chilly waters. Speaking of water, make sure to stay well- hydrated over the entire week, and take frequent breaks in shaded or air conditioned areas if you plan to be outdoors during the heat.
Make sure to look before you lock your vehicles, checking for children and pets. And of course if you are planning to be outdoors, make sure to wear loose, light colored clothing and sunscreen on exposed skin.
The hottest day this weekend looks to be on Sunday, with the best probabilities to see 105+ in western Nevada valleys. How long will this last? Well, we do see some slight downward trend beginning Monday, but still keeping us well above average and in triple digits through the end of next week. In checking with the Climate Prediction Center's 8-14 day outlook, the trend is to keep the heat going at least into mid-July.
Our only caveat to this excessive heat is that when we have seen this type of heat lingering over our area in the past, it can bring about clouds and sometimes precipitation. If we do see clouds on any given day, we could see our high temperatures settle in just below the forecasted values. Of course this will also apply if we see any showers form in these clouds. Any showers that form would be light and short-lived.
Breezes throughout this week and into next will remain of the typical afternoon zephyr variety. Relative humidity will be ranging 10-12% or lower through this period as well, so take extra caution around sparks, fires and BBQs this week. Check towing chains to prevent sparks near roadsides, and be vigilant for new fire starts. HRICH
AVIATION
VFR flying conditions today, and through the forecast period. Light, variable winds will become breezy, with gusts 15-20 kts possible each afternoon. The heat that will build over the region for midweek may bring about density altitude concerns that may persist into next week and beyond. HRICH
FIRE WEATHER
The heat is on, and with it will come further drying of fuels.
Afternoon highs will reach 10-20 degrees above normal this weekend.
Relative humidities will range the low teens to single digits through the holiday weekend, and perhaps beyond. Overnight RH recoveries will be poor to very poor. The winds are the only thing that stays below a threshold for critical fire weather conditions to arise. Gusts of up to 30 mph are possible in the afternoons. HRICH
REV Watches/Warnings/Advisories
NV...Excessive Heat Watch from Saturday morning through Wednesday morning NVZ001-003>005.
CA...None.
Area Forecast Discussion National Weather Service Reno NV 1231 PM PDT Tue Jul 2 2024
SYNOPSIS
* High pressure brings a prolonged heatwave starting on Wednesday through early next week.
* Afternoon highs will be 10-20 degrees above average by the weekend resulting in a moderate to major HeatRisk.
* It will remain very dry with typical afternoon breezes, and a very low chance, less than 5%, for precipitation in the weekend.
DISCUSSION
The Pacific ridge that has been lurking off the coast will be the main weather feature to concern us this week into next. As the ridge migrates over the Great Basin, we will see an impactful warming trend building in. While today appears to be our brief break ahead of the warmup, highs in western Nevada valleys will top out in the mid to upper 90s for most locations. Sierra valleys will even see upper 80s to low 90s in some locations today. This is the literal warm-up to our upcoming warmup.
All guidance is in agreement that this will be a hot stretch of days for our July 4th holiday into the holiday weekend. Western Nevada valleys are in for a long duration of 100+ degree days, and as for the Sierra communities, expect 90 degrees or greater.
Probabilities of over 105 degrees in western NV are 40-80% over the weekend. For this reason, an Excessive Heat Watch is in effect from Saturday through Wednesday morning.
It sure will be tempting to jump into cooler waters of area lakes and streams. Expect waters to be comparatively chilly, possibly cold enough for shock. Be sure to wear buoyant life vests near chilly waters. Speaking of water, make sure to stay well- hydrated over the entire week, and take frequent breaks in shaded or air conditioned areas if you plan to be outdoors during the heat.
Make sure to look before you lock your vehicles, checking for children and pets. And of course if you are planning to be outdoors, make sure to wear loose, light colored clothing and sunscreen on exposed skin.
The hottest day this weekend looks to be on Sunday, with the best probabilities to see 105+ in western Nevada valleys. How long will this last? Well, we do see some slight downward trend beginning Monday, but still keeping us well above average and in triple digits through the end of next week. In checking with the Climate Prediction Center's 8-14 day outlook, the trend is to keep the heat going at least into mid-July.
Our only caveat to this excessive heat is that when we have seen this type of heat lingering over our area in the past, it can bring about clouds and sometimes precipitation. If we do see clouds on any given day, we could see our high temperatures settle in just below the forecasted values. Of course this will also apply if we see any showers form in these clouds. Any showers that form would be light and short-lived.
Breezes throughout this week and into next will remain of the typical afternoon zephyr variety. Relative humidity will be ranging 10-12% or lower through this period as well, so take extra caution around sparks, fires and BBQs this week. Check towing chains to prevent sparks near roadsides, and be vigilant for new fire starts. HRICH
AVIATION
VFR flying conditions today, and through the forecast period. Light, variable winds will become breezy, with gusts 15-20 kts possible each afternoon. The heat that will build over the region for midweek may bring about density altitude concerns that may persist into next week and beyond. HRICH
FIRE WEATHER
The heat is on, and with it will come further drying of fuels.
Afternoon highs will reach 10-20 degrees above normal this weekend.
Relative humidities will range the low teens to single digits through the holiday weekend, and perhaps beyond. Overnight RH recoveries will be poor to very poor. The winds are the only thing that stays below a threshold for critical fire weather conditions to arise. Gusts of up to 30 mph are possible in the afternoons. HRICH
REV Watches/Warnings/Advisories
NV...Excessive Heat Watch from Saturday morning through Wednesday morning NVZ001-003>005.
CA...None.
Link to 1 hour of 5 minute data for KTVL
Terminal Aerodrome Forecast (TAF) for KTVL
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Terminal Aerodrome Forecast (TAF) for KTVL
Wind History graph: TVL
(wind in knots)Tide / Current for Sacramento %234, Sacramento River, California
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