Tatoosh and Smith data last acquired Monday, Aug 03, 2015 at 9:19PM PDT click here Tatoosh or Smith Islands for most recent obs.
Usually, good West winds when Tatoosh is .03" (1 millibar) higher than Smith. (according to LW)
With Tatoosh at 29.98 " and Whidbey NAS at 29.95 " ,
the Tatoosh to Whidbey Island pressure difference is currently 0.03 in Full Smith Island Report from NWS
If you follow these forecasts, please let me know which one seems to be the more reliable/accurate. They start from the same raw data, but because they use different boundaries they end up with different results. TJ
Hours don't always match for GFS and ETA because GFS runs every 6 hours and eta every 12hours
ETA projections are for 6 through 84 hours in advance, from the initial model times of 0000, and 1200 UTC
GFS projections are for 6 through 84 hours in advance, from the initial model times of 0000, 0600, 1200, and 1800.
Only 60 hour forecasts are reported here. LAMP forecast is updated every three hours.
CLD = forecast categories of total sky cover valid at that hour.
WDR = forecasts of the 10-meter wind direction at the hour, given in tens of degrees.
WSP = forecasts of the 10-meter wind speed at the hour, given in knots.
P06 = probability of precipitation (PoP) during a 6-h period ending at that time.
The 6 hour PoPs are valid for intervals of 6-12, 12-18, 18-24, 24-30, 30-36, 36-42, 42-48, 48-54 and 54-60 hours after the initial data times.
P12 = PoP during a 12-h period ending at that time.
The 12 hour PoPs are valid for intervals of 12-24, 24-36, 36-48 and 48-60 hours after the initial data times.
In the message, the PoPs are tabulated at the end time of the noted time interval. The numeric values of the PoPs are given to the nearest percent, ranging between 0 and 100%. A missing forecast is indicated by "999".
T06 = probability of thunderstorms/conditional probability of severe thunderstorms during the 6-hr period ending at the indicated time.
T12 = probability of thunderstorms/conditional probability of severe thunderstorms during the 12-hr period ending at the indicated time.
Q06 = quantitative precipitation forecast (QPF) category for liquid equivalent precipitation amount during a 6-h period ending at that time.
Q12 = QPF category for liquid equivalent precipitation amount during a 12-h period ending at the indicated time.
SNW = snow fall categorical forecasts during a 24-h period ending at the indicated time.
CIG = ceiling height categorical forecasts at the hour.
Cloud (CLD) Categories
MAV/ETA/NGM octa=1/8 of sky
0/10 of opaque clouds
scattered > 0 to 4 octas
1/10 to 5/10 of opaque clouds
broken > 4 to < 8 octas
6/10 to 9/10 of opaque clouds
10/10 of opaque clouds or totally obscured
MAV Ceiling Height Categories
< 200 feet
200 - 400 feet
500 - 900 feet
1000 - 1900 feet
2000 - 3000 feet
3100 - 6500 feet
6600 - 12,000 feet
> 12,000 feet or unlimited ceiling
MAV Visibility (VIS) Categories
1/2 mile or less
more than 1/2 - or less than 1 mile
1 mile - less than 2
2 - less than 3 miles
3 - 5 miles
Vis is > 6 miles
QUANTITATIVE PRECIPITATION FORECASTS: QPF CATEGORIES MAV and MET