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NOAA > NWS > CPHC

This page was last loaded at 1:35 pm HST Jul 5, 2015 (2335 GMT Jul 05, 2015)

Central Pacific (140W to 180) xml button

Tropical Outlook Sea Surface Temperatures CPAC Satellite EPAC Satellite Widgets Satellite Message Forecast Discussion

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Issued: Jul 05, 2015 8:30 AM HST


Based on data through 8:00 am Jul 05 2015 HST


A weak upper low about 550 miles northeast of Hilo was moving southeast around 10 miles an hour. No significant weather was being associated with this low as it slowly moved further away from the islands this morning.

Meanwhile, a large, upper level, high pressure region Sat not too far northwest of the state. The northerly wind flow aloft over the islands on the east side of the high pressure area was keeping the air mass fairly stable across the state.

Gradually returning trade winds were evident as the patches of scattered low clouds near the islands were moving toward the west near Kauai and toward the west southwest around the other islands. The clouds were moving along at 15 miles an hour but could increase in speeds a bit as the day wears on.

There were some small clusters of broken low clouds along and immediately east of the windward coasts of the Big Island. And one cluster was in the Alenuihaha channel. Over the islands and around the rest of the state, skies were sunny to mostly sunny at 8 am.

A front was nearly stationary, still lingering off to the northwest this morning. The narrow, roughly 50 miles wide cloud band was centered along a line through 30°N 168°W to 24°N 175°W to beyond 23°N 180°E. The broken to overcast low cloud band had tops from 10000 to as much as 17000 feet high. Low clouds in an area from 20°N to 30°N bewteen 160°W and 168°W were flowing northward in response to the presence of the front.

Hawaii Visible Satellite image for 1800 UTC

Western Pacific (West of 180)

Monitored by the:
Joint Typhoon Warning Center
Japan Meteorological Agency

Eastern Pacific (East of 140W) xml button

Eastern Pacific Graphical Tropical Weather Outlook


TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
500 PM PDT SUN JUL 5 2015

For the eastern North Pacific...east of 140 degrees west longitude:

An elongated area of low pressure located about 1100 miles
east-southeast of the Hawaiian Islands continues to produce
disorganized showers and thunderstorms. Development of this
disturbance is not expected since upper-level winds are forecast
to become unfavorable in a day or so. The low is expected to drift
westward or west-northwestward over the next several days, and move
into the central Pacific Ocean basin later tonight or on Monday.
* Formation chance through 48 hours...low...10 percent
* Formation chance through 5 days...low...10 percent

A large low pressure system centered about 1550 miles southwest
of the southern tip of Baja California Sur is producing an
extensive area of cloudiness and showers. Satellite-derived
surface wind data indicate that the low is gradually becoming
better defined, and environmental conditions are forecast to
become more conducive for development over the next several days.
A tropical depression is expected to form by mid-week while the
system moves west-northwestward at about 15 mph.
* Formation chance through 48 hours...medium...50 percent
* Formation chance through 5 days...high...90 percent


Eastern Pacific Graphical Tropical Weather Outlook

Monitored by the National Hurricane Center (NHC)

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Saffir-Simpson Scale
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  • Category 1 - winds 74-95 mph (64-82 kt)
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