Friday, August 18, 2017

Forecast Discussion

Tradewind flow associated with high pressure is dominating the weather over the state.  Showers will focus over mauka and windward areas.  .

North Pacific Surface Analysis
Hawaii IR Satellite Loop
Barking Sands Observations
Fleet Numerical Models
Kauai Radar

At Barking Sands, the weather will be fair.  Winds will veer onshore with daytime heating. Afternoon sprinkles possible.

Sky Condition:
AM: Partly Cloudy
PM: Partly to Mostly Cloudy

AM: E 3-8kt
PM: NW 8-13G18kt

High: 87°F/27°C
Low: 70°F/21°C
Sea:  79°F/26°C

Sea State (Northern BARSTUR):
Wind Waves: E 3-5ft.
Swell:  SE 1-2ft 14s
Combined: E 4-6ft

Near Shore Forecast Extending From Coastline Out To 2 Miles:

North of Nohili Point:
AM: NE 10-15G20kt
PM: NE 10-15G20kt

Combined: NE 3-5ft

South of Nohili Point:
AM: E 3-8kt
PM: NW 8-13kt
Combined: NE 2-4ft

Fleet Numerical WW3 Ocean Prediction Model
Hawaii Buoy Reports
NOAA Hawaii Tidal Data
Tidal Data for Waimea Bay, Kauai
Hawaii NOTMARs

Thunderstorm Potential Today:

Thunderstorm Potential Outlook (72hr):

***Although the forecast may not indicate, it should be understood that Thunderstorm activity could produce strong and gusty winds, heavy precipitation, lightning, hail, and flash flooding; along with severe turbulence and icing for aircraft operating within the vicinity.

Swell and Surf:
Surf at Barking Sands will be small.

Aviation Weather (PHBK):
AM: FEW025 FEW-SCT050  
Surface Winds
AM: 09005kt
PM: 31010kt
Visibility: 7sm
Flight Level Winds (kt)/Temperatures (°C)
010: 10513/23
030: 10513/18
050: 09515/14
100: 05504/11
150: 30006/04
200: 28509/M6
250: 27012/M17
300: 230518/M29
Cloud Bases: 2,000ft
Min Ceiling: 5,000ft
Max Low Cloud Tops: 8,000ft
Freezing level: 16,000ft
Turbulence: LGT-MOD SFC-080
Icing:  NONE
Min Altimeter: 30.01ins
Max DA: 1143ft
Max PA: -100ft

NOAA Aviation Weather Center
Look up TAFs/METARs

Pilots, please call the office anytime to file a DD FORM-175-1. For each request, the following information will be needed: (1) Date of Flight; (2) Aircraft Type/Number/Call Sign; (3) Departure Point and Time; (4) Flight Level; (5) Destination(s)/Alternates (in case destination field is below minimums); (6) Time of arrival; (7) Name of Pilot Receiving Brief.

48hr Weather Outlook: Saturday
Skies: Partly to Mostly Cloudy
Weather: Possible Isolated Showers
Winds: NW 8-13G18kt

72hr Weather Outlook: Sunday
Skies: Partly to Mostly Cloudy
Weather: Isolated Showers
Winds: NW 8-13G18kt

The next forecast will be issued on Monday, August 21, 2017.

Additional METOC Links:

National Weather Service Honolulu
Central Pacific Hurricane Center
National Hurricane Center
Pacific Tsunami Warning Center