textproduct: Portland

SYNOPSIS

Ever changing pattern this week with a warming trend on Tuesday into Wednesday. Higher confidence on Tuesday's highs being well above normal, but some level of uncertainty lies with Wednesday still as there is another potential weather pattern that would disrupt as significant of heating. Thunderstorms remain possible on Wednesday, especially over the Lane and Linn county Cascades. Cooler with onshore flow starting Thursday.

LONG TERM...Thursday through Monday

By Thursday and Friday, the ridge is expected to weaken as a broader trough begins to press into the Pacific Northwest. That should allow temperatures to ease a few degrees late in the week, though values may still remain somewhat above average for late July. Beyond Friday, there is currently no strong signal for meaningful precipitation, and temperatures remain mild in the mid 80s. -12

AVIATION

Predominately VFR conditions across NW OR and SW WA Monday afternoon with BKN/OVC high clouds over the region. Inland terminals will maintain VFR conditions through the TAF period. Marine stratus is expected form along the coast again by 02-06z Tue with mainly IFR/LIFR conditions. Coastal conditions should improve to VFR by 17-20z Tue. Winds will be light, northwesterly along the coast and variable inland.

KPDX AND APPROACHES...VFR conditions with light and variable winds through the period. High BKN/OVC clouds expected into Tuesday. -03

MARINE

A typical summertime pattern will continue through the middle of this week with persistent north to northwest winds over the coastal waters. Winds then shift southwest to westerly Thursday into the weekend as weak low pressure develops over the waters. Winds will remain light less than 10-15 kts. Seas will be 3-6 ft at 8-9 seconds through the weekend. -03

PQR WATCHES/WARNINGS/ADVISORIES

OR...Heat Advisory from 10 AM Tuesday to 11 PM PDT Wednesday for ORZ108-109-111-112-115-120>122. WA...Heat Advisory from 10 AM Tuesday to 11 PM PDT Wednesday for WAZ204>207-209-210. PZ...None.