Air Temperatures – The following high temperatures (F) were recorded across the state of Hawaii Friday…along with the low temperatures Friday:

83 – 74  Lihue, Kauai
88 – 78  Honolulu, Oahu
89 – 75  Molokai AP
90 – 75  Kahului AP, Maui – 92 was the record high temperature Friday…set back in 1950
85 – 76  Kailua Kona
88 – 72  Hilo, Hawaii

Here are the latest 24-hour precipitation totals (inches) for each of the islands Friday evening:

1.83  Kilohana, Kauai
3.04  Dillingham, Oahu
0.08  Molokai
0.04  Lanai
 0.14  Kahoolawe
1.67   Hana AP, Maui
3.58  Waikii, Big Island

The following numbers represent the strongest wind gusts (mph) Friday evening:

15  Poipu, Kauai
33  Kuaokala, Oahu
23   Molokai
29  Lanai
23  Kahoolawe
31  Maalaea Bay, Maui
25  Kealakomo, Big Island

Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (nearly 13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the 10,000+ feet high Haleakala Crater 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.


Aloha Paragraphs


http://www.ssd.noaa.gov/goes/west/tpac/avn-animated.gif
A tropical Disturbance is spinning to the south of the islands, while Hurricane Rosa remains active in the eastern Pacific…although won’t be an issue for Hawaii / click images to enlarge

http://www.ssd.noaa.gov/goes/west/cpac/ir4.jpg
A tropical disturbance to the south…which will continue to move by south of the Hawaiian Islands


http://www.ssd.noaa.gov/goes/west/hi/ir4.jpg
Clear to mostly cloudy…considerable clouds near the Big Island

 

https://radar.weather.gov/Conus/RadarImg/hawaii.gif
Showers locally and offshore…some heavy near the Big Island
 Looping image

 

~~~ Hawaii Weather Narrative ~~~

 

Broad Brush Overview: A band of clouds over the western portion of the state will push westward and fall apart through Saturday. Incoming tropical moisture will skirt across the Big Island tonight and Saturday, bringing and increase in showers and a slight chance of thunderstorms. Elsewhere, light to moderate trade winds will focus clouds and showers over windward and mountain sections. Drier air moves in with the trade winds Sunday into Monday. Winds will weaken and veer southeast beginning Monday night through much of next week.

Details: Incoming tropical moisture is approaching the Big Island from the east, and will skirt by windward and southeast portions tonight and Saturday. Radar shows some heavier showers and a few isolated thunderstorms east of the Big Island tracking westward with the trade winds. This batch of moisture will likely be too far south to impact the smaller islands, where fewer showers are expected tonight and Saturday. Trade winds will focus any rainfall over windward and mountain areas. The Kona slopes and interior of the Big Island could see a few thunderstorms Saturday afternoon…due to the abundant moisture and upslope winds.

A question remains in the forecast, in regards to the possible formation of a tropical cyclone south of the state. This tropical low will continue to drift westward over the next 36 hours with models deepening the central pressure of the low, which is forecast to track several hundred miles south of Hawaii. The impacts with this system include bringing high clouds over the islands, and enhancing the trade wind speeds through Saturday. Here’s what the computer models are showing.

Looking Ahead: This disturbance is being referred to as Invest 97C, a low level circulation center located well south of Hilo. Both the GFS and ECMWF models develop this disturbance into a tropical cyclone over the next couple of days as it tracks west and passing well south of the main Hawaiian Islands…before curving northward. Long range models depict a deep low setting up northwest of the state, which will draw 97C northward. It will also force the surface ridge east of the state, allowing our trade winds to veer southeast Monday night into much of next week. This means a return to the humid conditions and daytime sea breezes and nighttime land breezes for much of next 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 / Here’s the latest Vog Forecast Animation / Here’s the Vog Information website

Marine Environmental Conditions: A trough over the central islands is dissipating. Winds will increase into this weekend as surface high pressure builds to the north, and an area of low pressure passes to the south, likely as a tropical cyclone. The latest forecast continues to show Small Craft Advisory (SCA) winds developing over the typically windier waters adjacent to the Big Island and the islands of Maui County tonight. The increasing trade winds, plus the potential of a fetch developing with a tropical cyclone, could cause seas to build over additional waters Saturday.

A small to moderate south-southwest swell will arrive, then hold into early next week. A slightly larger reinforcing south-southwest swell source is expected to arrive next Tuesday.

A new north-northwest swell is expected to build surf to moderate levels along most north and west facing shores of the smaller islands through the weekend.

If the aforementioned tropical cyclone were to develop south of the islands, it could increase surf heights along some shorelines by later this weekend or early next week. Regardless, expect the strengthening trade winds to cause rough surf to build along most east facing shorelines into early next week.



World-wide Tropical Cyclone Activity

 

Here’s the Friday Pacific Disaster Center (PDC) Weather Wall Presentation covering the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico, including Tropical Storm Kirk…and Sub-Tropical Cyclone Leslie

Here’s the Friday Pacific Disaster Center (PDC) Weather Wall Presentation covering the Pacific and Indian Oceans, including Hurricane 20E (Rosa) in the eastern Pacific…and Typhoon 28W (Tamir), and Tropical Depression 30W, and retiring Tropical Cyclone 02P in the western and south Pacific


>>> Atlantic Ocean:

Sub-Tropical Cyclone Leslie

NHC textual advisory
NHC graphical track map

According to the NHC Advisory 13…The storm is moving toward the southwest near 7 mph, and this general motion is expected to continue through today. Leslie is then forecast to slowly meander over the central Atlantic through early next week. Maximum sustained winds are near 45 mph with higher gusts. Some strengthening is expected, and Leslie could transition into a tropical cyclone during the couple of days. Winds of 40 mph extend outward up to 255 miles from the center.

>>> Caribbean Sea: 

>>> Gulf of Mexico: No active tropical cyclones

Here’s a satellite image of the Caribbean Sea…and the Gulf of Mexico

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

>>> Eastern Pacific:

Hurricane 20E (Rosa)

NHC textual advisory
NHC graphical track map

According to the NHC Advisory 18…Rosa is moving toward the north near 12 mph, and this general motion is expected to continue through tonight. A turn toward the north-northeast with an increase in forward speed is expected on Sunday. On the forecast track, the center of Rosa will approach the central and northern Baja California peninsula on Monday. Maximum sustained winds are near 105 mph with higher gusts. Rosa is expected to start weakening tonight, and it is expected to weaken to a tropical storm late Sunday or on Monday. Hurricane-force winds extend outward up to 30 miles from the center and tropical-storm-force winds extend outward up to 160 miles.

Tropical  Storm 21E (Sergio)

NHC textual advisory
NHC graphical track map

According to the NHC Advisory 1…Sergio is moving toward the west-northwest near 13 mph. A generally westward motion is expected during the next several days. Maximum sustained winds are near 40 mph with higher gusts. Strengthening is expected during the next several days, and Sergio could become a hurricane on Monday. Tropical-storm-force winds extend outward up to 105 miles mainly to the east of the center.

>>> Central Pacific: No active tropical cyclones

1.) Showers and thunderstorms associated with an area of low pressure located around 650 miles south of Honolulu, Hawaii have become better organized early this morning. Environmental conditions are forecast to remain conducive for development over the next several days, and the low will likely become a tropical depression later today or tonight while it moves westward at around 15 mph across the central Pacific, well to the south of Hawaii.

* Formation chance through 48 hours…high…90 percent
* Formation chance through 5 days…high…100 percent

>>> Northwest Pacific Ocean:

Typhoon 28W (Trami)

JTWC textual advisory
JTWC graphical track map

Tropical Storm 30W (Kong-rey)

JTWC textual advisory
JTWC graphical track map

>>> South Pacific Ocean:

Tropical Cyclone 02P (Liua) – Final Warning

JTWC textual advisory
JTWC graphical track map

>>> North and South Indian Oceans / Arabian Sea: No active tropical cyclones

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

 

Interesting: Inky Black, Polluted Rivers Seep into Ocean After Hurricane Florence in NASA Image – Over 8 trillion gallons of rain fell on North Carolina during Hurricane Florence, according to an unofficial estimate reported by the National Weather Service in Raleigh, N.C.

As the floodwaters rose, they churned up pollution and debris, which then was fed into the swollen rivers of North Carolina, a new NASA image reveals. Snapped on September 19 by NASA’s Operational Land Imager on the Landsat 8 satellite, this image shows how Hurricane Florence affected water quality: the White Oak River, New River and Adams Creek spew darkened water into an equally discolored Atlantic Ocean.

Organic matter such as leaves, roots or bark contains pigments and chemicals that can color the water different shades, based on how much is in the water. In this image, the darker brown colors represent higher concentrations of contaminants, while the blues and greens have lower concentrations of contaminants.

One type of contaminant, pig waste, can lead to mass fish die-offs and algal blooms. It’s not clear if pig waste is part of the contamination shown in the image.

Meanwhile, most of the rivers in North Carolina remain flooded, but water levels in some have begun receding, while some are still rising, according to NASA. Many homes, buildings and roads are still submerged in standing water.