A surface ridge of high pressure is located across NE OK this morning and will slowly migrate eastward later today as the next upper-level system nears the west coast. Temps have been in the lower 30s this morning across northern OK with slightly higher values across the south. Mostly sunny skies and highs in the upper 50s to lower 60s will be likely with winds eventually veering from the southwest around 10 to 15 mph for the day.
A strong upper-level trough will move across the pacific northwest Tuesday while ejecting into the central plains Wednesday. At the base of this trough, another low will attempt to develop across the southern stream and should eventually become cut-off from the main upper-level flow remaining well to our southwest. At the surface, a strong cold front will roll across the central plains Wednesday and enter northeastern OK Wednesday evening with a line of showers and storms before quickly exiting pre-dawn Thursday morning. Instability will be limited. Severe threats are not expected.
A few storms may produce some locally heavy downpours with small hail as the line moves across the area Wednesday evening. After shower and storm activity exits the area, temps will remain cold with most of Thursday afternoon in the upper 40s with north winds near 15 to 25 mph. Friday morning should start below freezing while moving into the upper-50s to lower-60s by afternoon with sunshine and north winds. At this point, our weekend looks good. The pattern should bring lows in the mid-30s to lower 40s with afternoon highs in the lower 60s with sunshine and good travel weather. A weak boundary moves across the area late Saturday night with minor impacts for Sunday.
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