1900hurricane

As am I. Even at the tail end of fantasyland for most of the operational models, the change is already starting to be picked up on. It might be time for me to start looking at my schedule and seeing what I might need to do to free up a day in the future.

Last couple of ECMWF runs have been trying to bring a huge piece of energy down in the west at the end of the forecast cycle. That might be something to watch coming up and could also be the harbinger of the oft-mentioned pattern change.

Eight or so days out looks fun. ECMWF has been really consistent showing a strong trough ejecting into the plains despite the range.

Pretty good WPC Extended forecast discussion this morning talking about pattern change and the emergence of the Subtropical Jet.

Looks like a pretty pronounced split flow regime will likely establish itself for the first half of December, particularly for the second week. That week, medium-range guidance is placing a ridge over the northern part of the CONUS and into Canada on top of a trough in the Southwest. Looks like a pretty warm pattern with the potential for some good rain across the southern plains, although the European guidance is much less amplified with the southern stream. Sent from my iPhone using Tapatalk

Yep, I've been keeping an eye on it as well. I missed andyhb's post with the convective outlook in the Texas thread, but I figure I'll post it over here if just for posterity's sake. Predictability Too Low >> Probability Too Low any day of the year. ZCZC SPCSWOD48 ALL ACUS48 KWNS 171000 SPC AC 171000 DAY 4-8 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0400 AM CST MON NOV 17 2014 VALID 201200Z - 251200Z ...DISCUSSION... MODEL CONSENSUS IS THAT UPPER PATTERN WILL BEGIN TO DEAMPLIFY BY THURSDAY /DAY 4/ AND TRANSITION TO A MORE PROGRESSIVE REGIME WITH SEVERAL LOWER-LATITUDE IMPULSES EXPECTED TO MOVE THROUGH THE SRN THIRD OF THE COUNTRY. AN INITIAL LOW-AMPLITUDE SHORTWAVE TROUGH SHOULD MOVE THROUGH THE SRN PLAINS AND LOWER MS VALLEY THURSDAY...BUT IT CURRENTLY APPEARS MOISTURE RETURN WILL REMAIN SOMEWHAT LIMITED FOR AN ENHANCED SEVERE THREAT. FRIDAY /DAY 5/ COLD FRONT IS EXPECTED TO MOVE SWD TOWARD THE COAST AS SHORTWAVE RIDGING BUILDS OVER THE SRN PLAINS. SATURDAY /DAY 6/ MODELS HAVE TRENDED TOWARD SIMILAR SOLUTIONS WITH SPEED AND AMPLITUDE OF A MORE SUBSTANTIAL SHORTWAVE TROUGH THAT WILL MOVE INTO THE SRN PLAINS SATURDAY AND CONTINUE INTO THE MS VALLEY LATER SATURDAY NIGHT. GIVEN THE ANTECEDENT FRONT IS NOT EXPECTED TO PENETRATE THE GULF...MORE SUBSTANTIAL MOISTURE RETURN AND INSTABILITY SHOULD OCCUR IN ADVANCE OF THIS FEATURE SUPPORTING POTENTIAL FOR A MORE ROBUST SEVERE THREAT FROM TX INTO A PORTION OF THE LOWER MS VALLEY. AN ENHANCED SEVERE RISK AREA WILL LIKELY BE INTRODUCED ON THE NEXT 4-8 UPDATE FOR A PORTION OF THIS REGION IF MODEL ENSEMBLES CONTINUE TO DEMONSTRATE CONSISTENCY. FOR DAYS 7-8 SOME SEVERE THREAT WILL PROBABLY DEVELOP THROUGH SRN PORTIONS OF THE GULF COAST STATES AND INTO THE CAROLINAS. ..DIAL.. 11/17/2014

Looking ahead some, the next trough should start carving itself out across the central part of the country this weekend and going into next week. Of particular interest to me is the initial shortwave disturbance currently progged to eject into the southern plains Saturday. Even though the airmass across the southern plains and lower Mississippi Valley is going to need some major modification between now and then, guidance seems to think enough time will elapse to offer up some surface instability in the warm sector of the developing storm system. With adequate surface instability and wintertime dynamics, it looks like we might have our first real chance at some severe weather in quite a while.

I almost hate to mention it with so much uncertainty almost a week out, but the recent ECMWF solution shows some similarity to the system from November 1992. I highly doubt something near that magnitude will occur, but it certainly has intrigue. It'll be interesting to see how the solutions evolve over the next several days.

That's a real humdinger on the 00Z ECMWF there. I'd get excited for that. Agreement between GFS and ECMWF are pretty bad going into the medium range though. The 7-10 day means over the CONUS are pretty much polar opposites right now.