The latest update to this website was at 1030am Thursday morning (HST)

 

Here are the highest temperatures Wednesday afternoon…and the lowest Thursday morning:

82 / 66  Lihue AP, Kauai
m / m   Honolulu AP, Oahu
82 / 65  Molokai AP, Molokai
85 / 70  Kahului AP, Maui
83 / 70  Kona AP, Big Island
80 / 67  Hilo AP, Big Island

Here are the latest 24-hour precipitation totals (inches) for each of the islands as of Thursday morning:

0.04  Mount Waialeale, Kauai
0.03  Manoa Lyon Aboretum, Oahu
0.01  Kamalo, Molokai
0.00  Lanai 1, Lanai
0.04  West Wailuaiki, Maui
1.49  Kawainui Stream, Big Island

The following numbers represent the strongest wind gusts (mph) as of Thursday morning:

07  Port Allen, Kauai
18  Palehua, Oahu
18  Makapulapai, Molokai
20  Lanai 1, Lanai
12  Kahului AP, Maui
24  Kealakomo, Big Island

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) on Maui. These webcams are available during the daylight hours here in the islands, and at night whenever there’s a big moon shining down. Also, at night you will be able to see the stars, and the sunrise and sunset too…depending upon weather conditions.

 

https://weather.gc.ca/data/satellite/goes_gwdisk11_1070_100.jpg

Big Blue…click twice for largest version

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

 Cold fronts north…thunderstorms far south in the deeper tropics
(click for larger version)

 


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

Variable low clouds across the state locally

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

A few high clouds in the vicinity

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

Localized showers…not many

 

https://www.weather.gov/images/hfo/satellite/Kauai_VIS_loop.gif

Kauai and Oahu (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

Kauai and Oahu (Radar)

 

https://www.weather.gov/images/hfo/satellite/Oahu-Maui_VIS_loop.gif

Oahu and Maui County (Satellite)

 

https://radar.weather.gov/ridge/standard/PHMO_loop.gif

Oahu and Maui County (Radar)

 

https://www.weather.gov/images/hfo/satellite/Hawaii_VIS_loop.gif

 Maui, Kahoolawe, Lanai, and the Big Island (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Maui County and the Big Island (Radar)

 

https://radar.weather.gov/ridge/standard/PHWA_loop.gif

Big Island (Radar)

 

Model showing precipitation through 8-days (you can slow this animation down)

 

https://www.weather.gov/wwamap/png/hfo.png

Please open this link to see details on any current Watches, Warnings and Advisories noted above

 

https://www.weather.gov/images/hfo/graphics/pmsl.gif

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Thursday comments:  I’m here in Corte Madera, California, visiting my good friend Linda.  I hope you have a good Thursday wherever you happen to be spending it.

It’s cloudy here in Marin County with light showers, with a low temperature of 54.5 degrees in Linda’s backyard.

We have what’s called an Atmospheric River moving through northern California! It’s been off and on gusty with light to moderate rain falling over the last 24 hours!

 

Hawaii’s Broad Brush Weather Overview:  Gradually diminishing trade winds will deliver just a few light showers to windward areas of the smaller islands, while windward Big Island will continue to receive passing showers.

Light and variable winds and mostly dry weather are expected statewide tonight into Sunday. A weak front may move over the islands from the northwest late this weekend. This front is expected to bring little in the way of rainfall, however, and winds will remain light through much of next week.

Hawaii’s Weather Details:  Weakening high pressure is located about 300 miles north of Honolulu, which is promoting light to moderate trade winds over the islands. Dry air and stable conditions are prevailing over most of the state, with the Lihue sounding showing stable conditions and a strong inversion near 5,000 feet.

Precipitable Water (PW) imagery depicts values between roughly 0.75 and 1 inch nudging over the smaller islands from the east. Radar imagery also shows minimal shower activity over much of the state, with the the exception of windward Big Island where lingering moisture upstream continues to produce scattered showers.

Diminishing trades will deliver minor rainfall to windward areas of the smaller islands today, while windward Big Island will continue to receive passing showers. Shower coverage and frequency over windward Big Island should taper off by tonight, however, as trade winds weaken further and a land and sea breeze pattern develops statewide.

This in turn will occur as the high pressure north of the state moves south and dissipates, leaving a surface ridge near or directly over the islands. Light winds and mostly dry conditions will persist into at least Sunday, after which forecast details become a bit uncertain.

Late Sunday into Monday, a weak front is expected to approach from the northwest, and model guidance continues to offer inconsistent solutions for the prognosis of this feature, and the evolution of the weather pattern early next week.

Model guidance, however, indicates that we can be confident that winds remain light and precipitation totals associated with the potential frontal passage will remain fairly low. A relatively dry post-frontal weather pattern should persist well into next week as we head into the Thanksgiving holiday.

Fire weather:  An overall dry weather pattern is expected for the next several days. With this dry air moving overhead, relative humidity values will have the potential to reach the critical 45% threshold late mornings through the afternoons each day through Sunday. Fortunately, however, weak trade winds will mitigate fire weather concerns through the rest of this week.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather Map / Vog map animation

Hawaii’s Marine Environment:  Weak surface high pressure will settle in over the far north offshore waters. This will create and maintain primarily gentle to locally moderate trades winds through the rest of the week. The west-to-east orientated ridge axis will reach the northern coastal waters by Friday. This will result in continued light to gentle east to variable breezes, with slightly stronger winds in the Alenuihaha Channel and south of Big Island. Light winds are favored ahead of the approach of a weak front nearing Kauai on Sunday. This shallow frontal passage will disrupt trade flow as weak gentle easterly breezes veer northwest then northeast.

No significant swells are expected through early Friday, as trade wind waves continue to gradually subside and result in a more calm sea state. Nearshore windward buoys are observing a trade wind swell that will further decline throughout the remainder of the week, as a result of the light trades.

A series of northwest and north-northeast swells are due within a couple of days. A tiny northwest (320 degree) swell is being observed at the nearshore buoys as it moves around the islands. This swell will level out and then continue through Friday. A larger northwest (310-320 degree) swell developing from a pair of lows far northwest of the islands is scheduled to travel through this weekend and peak Sunday. A smaller reinforcing northwest pulse (320 degree) is due Monday and Tuesday.

A small north (010-020 degree) swell will slowly build in and hold Friday and Saturday. A very large, powerful storm force low churning off the U.S. Pacific Northwest coast will send an overlapping north-northeast (010-030 degree) swell across the islands early Friday, peaking Sunday into Monday and then fading Tuesday.

While none of these swells are expected to produce advisory level surf, the potential for high surf along north and east-facing shores will need to be monitored, especially as combining north-northeast swells peak Saturday through Monday.

 

 

 

World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of Mexico:  There are no active tropical cyclone

Northeastern Pacific:  There are no active tropical cyclon

Here’s the link to the National Hurricane Center (NHC)

North Central Pacific:  There are no active tropical cyclone

Here’s the link to the Central Pacific Hurricane Center (CPHC)

Northwest Pacific Ocean:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:

Tropical Cyclone 02S (Bheki)…is located approximately 123 NM east-southeast of St. Denis – Final Warning

https://www.metoc.navy.mil/jtwc/products/sh0225.gif

Arabian Sea:  There are no active tropical cyclones

Here’s a link to the Joint Typhoon Warning Center (JTWC)

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting:  Will Agricultural Weeds Finally Claim the Upper Hand in a Changing Climate?

A few years back, a group of weed scientists showed that soil-applied herbicides are less effective against agricultural weeds in the context of our changing climate. Now, the same research group, led by the USDA Agricultural Research Service and the University of Illinois Urbana-Champaign, has shown the same is true of post-emergence (POST) herbicides.

Mining a 30-year database from 16 Extension weed science programs (including Illinois Extension) across the U.S. Corn Belt, the researchers found variable weather significantly reduces the effectiveness of three leading POST herbicides against major weeds affecting corn and soybean. And if farmers can’t adequately control weeds with PRE or POST herbicides, corn and soybean yields — and global food security — will suffer.

“Weather doesn’t just matter in the hours after POST application, as other studies have shown. Our analysis showed air temperature and precipitation were linked with herbicide effectiveness days before and after application for the products and weeds we studied,” said Chris Landau, postdoctoral researcher for USDA-ARS and first author on the paper. “With the sheer amount of data we analyzed — thousands and thousands of data points, including a broad range of weather conditions over 30 years — we were able to characterize the effects of weather on POST herbicide efficacy on a much broader range of environments than previous studies.”

Read more at: University of Illinois Urbana-Champaign