Maui Trade Winds and Nevada Dry-Breezy Corridor Lead Today’s Fire-Weather Brief
TODAY'S FIRE WEATHER BRIEF
Maui Trade Winds and Nevada Dry-Breezy Corridor Lead Today’s Fire-Weather Brief
Strong east-northeast trade winds around Kahului and leeward Maui are the sharpest wind signal this morning, with sustained winds near 30 mph and gusts forecast near 45 mph. Across the Great Basin, the Storm Prediction Center highlights cen
Strong east-northeast trade winds around Kahului and leeward Maui are the sharpest wind signal this morning, with sustained winds near 30 mph and gusts forecast near 45 mph. Across the Great Basin, the Storm Prediction Center highlights central and eastern Nevada for dry south-southwesterly flow this afternoon, with local forecasts from Reno, Elko, Las Vegas and Susanville showing gusts into the mid-20s mph.
Morning assessment
Wind is the dominant fire-weather driver today, but the risk is uneven. Hawaii has a strong trade-wind contrast between wind-exposed leeward Maui and wetter windward areas, while the interior West has a dry-breezy setup focused on portions of Nevada rather than a broad regional outbreak.
The most important supported change is the alignment of stronger winds with locally dry fuels: trade winds near Kahului and afternoon south-southwest flow across central and eastern Nevada. No Red Flag Warnings or Fire Weather Watches were reported in the provided analysis, but the SPC Day 1 Fire Weather Outlook does place part of Nevada in its Elevated category, meaning wind and low relative humidity may overlap where fuels can carry fire.
Areas of greatest concern
Kahului and leeward Maui trade-wind corridor
NWS point guidance for Kahului shows east-northeast winds around 30 to 31 mph with gusts as high as 44 to 45 mph and only a limited shower chance. On leeward slopes and coastal plains, that wind field can push fire quickly through grass and brush, especially where fuels have dried between showers.
Reason and timing: Strong trades are the driver today around the Kahului wind corridor; the key uncertainty is how far any showers or higher moisture extend into leeward, wind-exposed areas. Hilo and parts of windward Hawaii Island have higher shower chances, including a 70% overnight probability in the provided forecast, which should locally temper fire activity there.
Central and eastern Nevada dry-breezy belt
The SPC identifies portions of central and eastern Nevada for Elevated fire weather this afternoon, citing south-southwesterly surface winds of 15 to 20 mph, higher gusts and relative humidity — RH, or the amount of moisture in the air — falling to roughly 10% to 15%. Local NWS forecasts in the broader Great Basin signal gusts into the mid-20s mph around Reno, Elko and Las Vegas, supporting the broader dry-wind concern.
Reason and timing: The main window is the afternoon into early evening as mixing increases winds over sagebrush, cheatgrass and cured fine fuels. The key uncertainty is where the strongest gusts and lowest humidity line up with ignitions, since the SPC signal is focused on central and eastern Nevada while point forecasts show nearby but variable wind maxima.
Susanville and northeast California uplands
Susanville has a forecast gust potential near 25 mph, making northeast California and the Modoc Plateau area more exposed than lower-elevation valley locations today. Redding and Chico are forecast with lighter winds, generally under 10 mph, so the signal is fragmented rather than statewide.
Reason and timing: Localized gusts are the driver today in the Susanville area; the uncertainty is whether those winds remain confined to uplands and exposed terrain or briefly overlap with dry grass, brush or chaparral in adjacent foothills. The available analysis does not support a broad Northern California fire-weather area.
What to watch through tonight
– Kahului and leeward Maui: Whether east-northeast gusts remain near the mid-40s mph and showers stay limited on the wind-exposed side of the island.
– Hilo and windward Hawaii Island: Shower coverage, including the higher overnight probability, will determine how much local fire potential is suppressed compared with drier leeward terrain.
– Central and eastern Nevada: The key overlap is afternoon south-southwest winds of 15 to 20 mph, higher gusts and RH near 10% to 15% in fuels such as cheatgrass and sagebrush.
– Reno, Elko and Las Vegas forecast areas: Watch whether mid-20s mph gusts stay localized or expand enough to connect with the SPC-highlighted Nevada corridor.
– Cheyenne and Cedar City corridors: Cheyenne has forecast gusts to 25 mph, while Cedar City has south winds around 7 to 12 mph with a slight shower chance overnight; both are watch areas for short-lived wind, humidity or shower changes rather than primary concerns.
Fuel and drought context
Drought is background susceptibility, not an immediate trigger. The provided U.S. Drought Monitor samples show high drought coverage in the Great Basin, including Nevada/Utah values of D1+ near 97.9% and D2+ near 73.7%, which can make sagebrush, cheatgrass and cured fine fuels more responsive when wind and low RH arrive. Hawaii shows near-zero drought coverage in the supplied Pacific Region sample, and California’s sampled D1+ footprint is lower at about 23.3%, so local wind, recent moisture and fuel condition matter more than statewide generalization.
Bottom line
Today’s clearest fire-weather signals are strong trade winds on leeward Maui and an SPC-supported dry-breezy corridor in central and eastern Nevada; Northern California has isolated gust potential near Susanville but lacks the broader wind-humidity alignment seen farther east.
Information is for situational awareness and should not replace official forecasts, warnings, or operational decision-making.
