| Current Conditions | ||
| Temp |  | 10.3 C |
| RH | | 15 % |
| Wind | | NNE 14 mph |
| Road | | Open (4x4) |
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Hawaiian Islands Synoptic Discussion and Guidance 199 FXHW60 PHFO 252010 AFDHFO Area Forecast Discussion National Weather Service Honolulu HI 1010 AM HST Sun Sep 25 2022 .SYNOPSIS... A surface ridge just north of the area will keep winds on the lighter side through Monday morning. The ridge will strengthen slight early in the week with trade winds flow gradually returning. Clouds and passing showers will tend to favor windward and mauka areas. Trade winds will increase a bit later in the week as a high to the north strengthens. && .DISCUSSION... Surface high pressure is centered far northeast of the area with a ridge axis extending southwest to a position a couple of hundred miles north of Kauai. Meanwhile a nearly stationary front is located several hundred miles north northwest of the state. Winds are on the lighter side favoring an east to southeast direction across the area. Winds will be light enough today to allow for sea breezes to develop across many areas. Clouds and a few showers are expected to from over interior areas this afternoon and evening under this scenario. Over the next few days, the front will weaken and the ridge axis will build in north of the area. This should allow for light to locally moderate trade winds to develop across the area. Clouds and passing showers will tend to favor windward and mauka areas with most leeward locations remaining dry. Later in the week and on into next weekend, the high will become a bit stronger to our north which should give a slight boost to the trade winds. && .AVIATION... Weak southeasterly background flow will continue today. Sea breezes will develop across most island areas today and result in cloud build ups and showers over the island interiors. Brief mountain obscurations/MVFR ceilings may occur within the showers. No AIRMETS are in effect this morning, but may need AIRMET Sierra later on this afternoon for some islands if cloud cover becomes more extensive. Clouds and showers are expected to clear out after sunset. && .MARINE... With an area of low pressure far west of the state and a weak ridge just north of Hawaii, expect light to moderate east to southeast winds to continue today. As the low tracks farther west tonight, winds will back to more of an easterly direction and light to moderate trade winds return through the first half of the week. Wind speeds may approach Small Craft Advisory threshold during the second half of the week. South swell and accompanying south shore surf will remain elevated today, then decrease tonight through Tuesday, leaving only background swell by the middle of the week. Minimal energy is expected from the south during the second half of the week. A small north-northwest swell is forecast to arrive Wednesday followed by a slightly bigger pulse over the weekend. Light trade winds will keep small surf in the forecast along east facing shores through at least Wednesday with a slight increase towards the end of the week as the trades strengthen. && .HFO WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Burke AVIATION...Foster MARINE...TS Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office |
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