Definitely going to be interesting heading into next weekend. Overrunning pattern appears to develop over much of Texas with a cold airmass in place.
Here is a very nice forecast discussion written this morning out of Norman, OK:
ALL INDICATIONS CONTINUE TO POINT TO A LONGWAVE PATTERN CHANGE
FROM THE CURRENT HIGHLY-AMPLIFIED WESTERN NORTH-AMERICAN RIDGE AND
EASTERN TROF TO A BROAD LONGWAVE TROF FROM NEAR HUDSONS BAY SW-
WARD INTO THE WESTERN CONUS. FAST W TO WSW FLOW ALOFT WILL SET UP
AT RELATIVELY LOW LATITUDES. UPSTREAM RIDGE WILL STRENGTHEN FROM
VICINITY GULF OF ALASKA NE-WARD INTO ALASKA AND NW CANADA. THIS
GENERAL PATTERN CAN MAKE LIFE MISERABLE THIS TIME OF YEAR IN A
LOT OF PLACES - INCLUDING THE S PLAINS - AS THE HIGH-LATITUDE
RIDGE PROVIDES THE COLD AIR WHILE IMPULSES IN THE LOW-LATITUDE
WESTERLIES PROVIDE THE LIFT. THE MOST RECENT RUNS OF THE GFS
ECMWF AND UKMET ARE IN QUITE GOOD AGREEMENT REGARDING THE LONGWAVE
PATTERN TRANSITION TAKING PLACE BY LATE NEXT WEEK. THAT AGREEMENT
MAY BE JUST A MATTER OF HAPPENSTANCE THO...AS RUN-TO-RUN
CONTINUITY HAS BEEN SHAKY AT BEST. LARGE-SCALE TRENDS SUPPORT A
BUILDUP OF ARCTIC AIR OVER CENTRAL CANADA BY MIDWEEK...WHICH WILL
THEN MIGRATE S AND E TO OVERSPREAD MUCH OF THE CONUS FROM THE
PLAINS AND N ROCKIES EASTWARD. ONCE THIS COLD AIR BECOMES
ESTABLISHED...THERE WILL BE A LOT OF POSSIBILITIES. DEVIL IS IN
THE DETAILS - AS ALWAYS - BUT THERE IS ENOUGH POTENTIAL IN THE
DEVELOPING LARGE SCALE-PATTERN TO WARRANT THE INTRODUCTION OF LOW
POPS AT THIS TIME FROM LATE THURSDAY ONWARD. THE INTRUSION OF COLD
AIR MEANS AN INCREASING POTENTIAL FOR WINTERY PRECIP WITH TIME.