Some Thoughts Into Late June…

The first (12) days of June are in the books and we’re running drier and warmer than average, month-to-date.  Officially, IND reports a temperature departure of 3 degrees above normal and a rainfall deficit approaching 1″.

As we look ahead, the pattern is one that seems to favor the most sustained hot dome (mean ridge) position across the 4 Corners region and Southwest states.  This morning’s European ensemble data shows this well:

Ck1DCVXWsAEGcde.jpg-largeThe teleconnections aren’t much help in trying to generate longer term thoughts.  They would favor more of a “normal” period temperature-wise, locally.  (BTW, thanks to the fine folks at MAD US Weather and ESRL for the data below).

On another note, there are different times through the year when the respected positive and negative phases of the teleconnections below have more of an impact on our weather, particularly during the fall through spring months.

JuneTellesLooking at some of the model data, the general consensus is for a warm look to go through the back half of the month, but we caution that we can’t simply “broad brush” the forecast through the EOM as warm and relatively quiet (a note on that in a moment).

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gfs-ens_T2maMean_us_7As mentioned above, despite an overall warm look on the models there will likely be periods of cooler “jabs” and it sure looks like a rather transient pattern to us across the Mid West and Ohio Valley, featuring more of the sustained heat across the Southwest region.  Transient patterns usually also yield for potential wetness and we note the GFS Ensembles trending in that direction to wrap up the month.

gfs-ens_apcpna_us_10In the shorter term, there will also be localized heavy downpours, but it’s a continued case of “haves and have nots.”  There won’t be any particular rhyme or reason to the specific placement of heavy, gully-washer type showers and storms mid week.

Finally, to close, perhaps the MJO shows the pattern best over the next couple weeks.  Best word to describe the MJO’s idea?  Transient.  🙂

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Overwhelming Evidence On Mid Month Cold…

The step-down cold pattern early January is ongoing, but we’ve been clear with our thinking of even colder air invading around mid month (Jan 10th-20th time period). We wanted to…

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Winter Delayed, Not Denied: Updated Canadian; MJO

We’ll talk later today about the upcoming winter storm threat next weekend. While nothing is set in stone at this juncture, the pattern is aligning in a fashion for the…

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Still Eyeing Mid Week Storms; Windy And Colder To Close The Week…

Screen Shot 2015-11-10 at 7.07.33 AMHighlights:

  • Wednesday night storms
  • Very windy to close the week
  • Colder Friday

The overall set-up over the next couple days will feature a strong autumn storm coming off the Rockies (today), crossing the Plains (Wednesday), and heading northeast into the Great Lakes to offer up some “fresh water fury!” (Thursday).

Here’s the track of our storm, courtesy of Weatherbell.com.

TueEvening

WedEvening

ThrEveningWe still need to monitor things closely for the potential of severe weather Wednesday evening, but latest data would suggest a lower chance of severe, overall.  Certainly not worth letting your guard down, but the lack of moisture return and timing are both on our sides in this particular event.  Localized damaging straight line winds are still of greatest concern of any of the severe elements across central IN and this would be for Wednesday night.

Here’s a look at the latest simulated radar for 10p Wednesday.  As we always say, don’t pay particularly close attention to the precise time.  This should be used as guidance as what the radar may look like Wednesday evening.

10pradarWedAs mentioned above, the speed, timing, and lack of moisture return strongly argue against significant rainfall with this storm.  We’ll forecast around 0.25″ with locally heavier totals in storms.  Not a big deal from a precipitation perspective.

What is a big deal is the wind on the backside of the low as northwest gusts really crank in the Thursday-Friday time frame (30-40 MPH).  Needless to say, Thursday isn’t a day to wear a hat. 🙂

Longer term, data continues to argue against any sort of sustained chill through the rest of November.  We note the SOI is actually positive right now.  This is certainly unusual with the ongoing El Nino and well above the base state (a warm sign).

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The MJO is also projected to rumble through the warm Phases of 2 and 3 over the next few weeks.  Note these are overall warmer than normal phases in November.

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