textproduct: Glasgow

KEY MESSAGES

- Expecting some scattered rain showers and a few isolated thunderstorms through Wednesday morning.

- Thursday will be the warmest day this week with above to much above normal temperatures.

- A cold front early Saturday will bring wind and a return to cooler but near normal temperatures this weekend.

DISCUSSION

SYNOPTIC SETUP:

Large upper low over the Gulf of Alaska will keep the upper flow over our area into Friday generally from the SW.

A disturbance moving NE out of eastern Idaho has tapped into a deep monsoonal moisture plumb. This disturbance will spread showers and thunderstorms northeast across mainly the SE zones this morning, with some areas potentially picking up over .25".

This system will move out later Wednesday allowing things to heat up a bit for Thursday. This should be the warmest day this week with highs in the upper 70s and 80s.

A vigorous upper trough will then swing east through the Pacific NW Friday. With a surface low over western/central Montana, southerly winds will increase over our CWA for a likelihood of a Lake Wind Advisory.

On Saturday, a strong surface low will move NE into central Sask bringing a cold front through early followed by windy conditions to the CWA. Temperatures will drop back close to normal levels. Lake Wind Advisory will be likely needed but winds should drop off Saturday evening.

A nearly zonal flow will keep temps near normal into next week while a disturbance looks to pass to our south. Showers are possible Sunday night through Monday night.

FORECAST CONFIDENCE & DEVIATIONS:

Did not see any glaring reasons to deviate from the NBM. TFJ

AVIATION

LAST UPDATED: 0545Z

FLIGHT CAT RANGE: IFR: KSDY and KGDV thru 19z; VFR: KGGW & KOLF

DISCUSSION: IFR level ceilings over W ND will expand into E MT this morning while showers/storms move NE across KGDV and KSDY 12-16z.

WINDS: Will decrease from the E, becoming light and variable Wednesday afternoon. TFJ

GGW WATCHES/WARNINGS/ADVISORIES

None.