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NOAA > NWS > CPHC

This page was last loaded at 3:41 pm HST Jul 22, 2014 (141 GMT Jul 23, 2014)

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 22, 2014 2:30 PM HST


Based on data through 2:00 pm Jul 22 2014 HST


Water vapor imagery shows an upper level trough is centered a few hundred miles to the northwest of Kauai. The trough has been moving slowly northward over the past several hours. Instability associated with the trough is causing some thunderstorms to form near its center and along its eastern periphery just to the north northwest of the state. Some thin high clouds are also streaming up from the south along the troughs eastern periphery mainly moving over Maui county and the Big Island including the adjacent coastal waters.

Cloud coverage over the islands varied from island to island but has increased quite a bit since early this morning. Instability associated with the above mentioned trough combined with daytime heating has caused some isolated towering cumulus and cumulonimbus clouds to form especially over the leeward Big Island slopes. Cloud tops are estimated to be up to around 35000 feet. Over Kauai clouds are covering most eastern and interior areas with scattered low clouds seen elsewhere. Over Oahu low clouds are banked up over the slopes and summits of both the Koolau and Waianae mountain ranges with scattered low clouds seen elsewhere. Over Molokai low clouds are covering east sections with a few patches of low clouds also seen over interior Lanai. Over Maui patches of low clouds are covering the slopes of Haleakala as well as the slopes and summits of the west Maui mountains. Over the Big Island clouds have built up over most of the area with a few breaks seen over the leeward Kohala slopes and over the high summits.

The ITCZ is rather inactive at the present with some isolated thunderstorms along its axis which is generally running along 10°N. Individual thunderstorms are moving along toward the west at around 15 mph.

Hawaii Visible Satellite image for 0000 UTC

Central Pacific Infrared Satellite image for 0000 UTC


BURKE

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

NWS NATIONAL HURRICANE CENTER MIAMI FL
500 PM PDT TUE JUL 22 2014

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

Shower and thunderstorm activity associated with a small area of
low pressure located about 1125 miles southwest of the southern tip
of the Baja California peninsula has changed little in organization
during the past several hours. Environmental conditions appear
conducive for further development of this system during the next few
days while it moves westward or west-northwestward at 10 to 15 mph.
* Formation chance through 48 hours...medium...40 percent.
* Formation chance through 5 days...high...70 percent.

An area of low pressure is forecast to form several hundred miles
south of the coast of Mexico in a few days. Some development of this
system is expected by the weekend while it moves generally
west-northwestward.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...medium...50 percent.

An area of low pressure could form in a few days about 1200 miles
east-southeast of the Big Island of Hawaii. Some development of
this system is possible by the weekend while it moves generally
westward.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...medium...30 percent.

Yet another area of low pressure could form in a few days several
hundred miles southwest of the southern tip of the Baja California
Peninsula. Some development of this system is possible by the
weekend while it moves generally westward.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.

Eastern Pacific Graphical Tropical Weather Outlook

Monitored by the National Hurricane Center (NHC)

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