Category Archives: Unseasonably Warm

Wednesday Forecast: A Bitterly Cold Start

Updated 11.12.13 @ 8:50p

Zionsville, IN After waking up to half an inch of snow, sunshine engulfed most of the region Tuesday. The vitamin D didn’t help temperatures moderate much as highs were more like mid to late December as opposed to mid November. We discuss a warming trend below, after a frigid start to your Wednesday.

Status-weather-clear-iconWednesday: Mostly sunny; 19/ 39

A strong area of high pressure will move overhead Wednesday and help supply a mostly sunny sky.  Despite the sun, it’ll be another unseasonably cold day.  Many outlying communities will begin the day in the upper teens before rising into the upper 30s to near 40 by afternoon- a solid 15 degrees below normal.

Status-weather-clouds-iconThursday: Partly cloudy; 28/ 49

The same high pressure that will be directly overhead Wednesday will begin to move east Thursday. This will put our region in a southwesterly air flow and allow temperatures to begin moderating. After another cold start, highs will push towards the 50 degree mark Thursday afternoon.

Status-weather-clouds-iconFriday: Partly cloudy; 35/ 52

We’ll wrap the work week up with a few more clouds and temperatures still slightly cooler than normal, though much milder than those we’re dealing with now.

 

Status-weather-showers-day-iconSaturday:  Turning cloudy with PM showers (0.20″); 40/ 59

Model data continues to hint at increasing clouds and the threat of afternoon light rain. We’ll initially have to overcome the dry air mass in place, but by afternoon/ evening we should have scattered showers beginning to impact central portions of the state.

Status-weather-showers-scattered-iconSunday: Cloudy with rain likely (0.45″); 52/ 60

More widespread rain will arrive for the second half of your weekend.  Highs will approach 60 and should we see any sunshine (not looking likely at this point), temperatures could go into the lower to middle 60s. While temperatures will be much warmer we’ll have to contend with rain Sunday.

Status-weather-storm-night-iconMonday: Showers and possibly a thunderstorm (0.50); 34/ 63

A strong cold front will blow through the state Monday evening. Out ahead of the front, an impressive surge of warmer and more humid air will move north and encompass central Indiana during the day. In fact, latest model data suggests dew points reach the lower 60s Monday. The combination between the warmer, more humid air in place and an impressive surge of arctic air behind the front could team up to produce a clap or two of thunder with the moderate to heavy rain threat Monday afternoon as the front moves through. Temperatures will then crash Monday night.

Status-weather-snow-scattered-day-iconTuesday: Scattered snow flurries; 24/ 34

The big story Tuesday will be the much colder air mass rushing into the state on strong and gusty northwest winds. Just enough moisture may linger to create the chance of scattered snow flurries.

No Comments 7-Day Outlook, Autumn, Forecast, Rain, Unseasonably Cool Weather, Unseasonably Warm

Closer Look At Saturday!

Happy college football Saturday!  Here’s a quick post before the fun begins this afternoon!  War Eagle!

Today will be a beautiful day, albeit windy.  Winds will gust out of the southwest up to 30 MPH at times. Partly cloudy skies are on tap as highs reach the upper 50s to lower 60s, courtesy of that mild southwest air flow.

Enjoy the warmth while you have it, as the next 7 days will be MUCH colder than average.  By Tuesday, highs will remain in the 30s with AM light snow. Overnight lows by Wednesday morning?  How do the lower 20s sound?

hrrr_t2m_max_indy_16

No Comments Autumn, Unseasonably Cool Weather, Unseasonably Warm, Windy

Two Totally Different Solutions For Next Week!

I wanted to quickly post on two totally different scenarios for next week.  Two of the more powerful forecast models we use to look into the mid-long range are in separate worlds when it comes to the weather pattern the middle to latter part of next week.

Here’s a look at the GFS upper air pattern:

gfs_z500_sig_east_38

Note the eastern ridging which would lead to well above normal temperatures during the middle to latter part of next week (by as much as 10 degrees above average), along with dry conditions.

HOWEVER, here’s a look at the European’s forecast upper air pattern late next week:

ecm_z500_anom_east_11

This would certainly be quite the significant storm for the Northeast, but the implications here are vastly different from that which the GFS shows above.  Instead of warmth and dry conditions, we’d deal with highs in the middle 30s and overnight lows in the lower to middle 20s.  Additionally, we’d also “enjoy” (okay, some folks would “enjoy”) snow showers and snow squalls the middle to latter portion of next week, as noted per the European below, including a lake Michigan connection.

ecmwf_slp_precip_ky_36

 

Needless to say, we have a lot to sort out in the coming days.  We’ll be here to do just that.  Make it a great Tuesday!

No Comments European Model, Forecast Discussion, Forecast Models, GFS, snow, Unseasonably Cool Weather, Unseasonably Warm

Changes Brewing?

After an unseasonably cool summer, the pattern flipped to a warmer regime during the month of September.  That same warm pattern continues presently, but are changes brewing?

We note the PNA (Pacific North American pattern) is trending positive and this could help promote more of a sustained trough and associated cooler than normal pattern to wrap up October.  Would it be enough to offset the very warm first half of October?  Too early to tell.  However, I will say that with the PNA trending positive, it does suggest we’ll be looking at more sustained chilly conditions, as opposed to the “in and out” flirtations of cool air as of late.

The GEFS suggests a trough sets up shop across the eastern part of the country for the back half of October.

IMG_0889

No Comments Autumn, PNA, Unseasonably Cool Weather, Unseasonably Warm

Sunday Afternoon Rambles…

Rain was plentiful over the region over the past 48 hours.  While widespread 2″ rainfall was common for all of central Indiana, the heaviest rainfall fell across southern and eastern Indiana.

Here are a couple of illustrations of the rainfall totals.  The first image is storm total rainfall from the past 24 hours. Note the heavy, 4″ type rains over southern and eastern Indiana. The second image is off the awesome Weatherbell model site and shows the heavy rainfall event over Indiana that unfolded on a bigger scale.  Needless to say, the short term drought concerns that we were dealing with August and September have been erased.

1379925_643932488960824_62568978_n

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rtma_precip_48

Temperatures are running MUCH cooler over the region today and we also note a drier, more fall-like, air mass building into the region.  A couple of other items- it’s easy to see where the cold front is currently located (as of this post) as many in Ohio are still dealing with warm, humid conditions.  Additionally, the cold core upper level low remains to our west and will rotate over our region Monday.  This will lead to an unseasonably cool day with mostly cloudy skies and the potential of a scattered shower.

rtma_glus

As we move forward, despite the cooler air to welcome in the new work week, we remain in a warmer than average pattern overall.  The PNA continues to dominate the pattern and until this goes positive, don’t look for any sort of sustained cool weather across the eastern US.

gfs_pna_bias

 

 

 

 

 

 

The European operational and ensemble show the current trough and associated cool air retreating and allowing a warmer southwesterly air flow to build in this week.

Monday

Geopotential32at32500hPa_North32America_24

 

 

Thursday

Geopotential32at32500hPa_North32America_96After a quiet time ahead (and much needed to dry out), our next significant storm system appears to arrive around mid month.  Both the GFS and European model are in agreement with this idea.  Does another potential significant rain maker and associated severe weather event lie ahead mid month?  Possibly.

Here’s a look at the upper air pattern out at Day 10 off the European model.  We note another significant storm system ejecting out into the Plains states, most likely after dumping another impressive early autumn snow on the central and northern Rockies.

ecm_z500_anom_noram_11

The GFS idea is something similar to that of the European, suggesting confidence is relatively high, at least from this distance.

gfs_z500_sig_noram_37

All of that said, we’re still in a “transient” pattern as the next big storm is shown crashing onshore along the west coast by both models.  We shouldn’t be surprised by a “transient” pattern this time of year. It’s October, after all- a month notorious for many swings on the thermometer.

We’ll close with a look at the European’s temperatures anomalies over the course of the next 10 days.  Note the chill of early week erased with above normal warmth for the majority of the period. Also, pay attention to the unseasonable chill coming off the Rockies and into the Plains towards the end of the period below.  This is associated with the mid month storm.

tavg_anom_ecmwf_conus_1

No Comments Autumn, Drought, European Model, Forecast Discussion, Forecast Models, Heavy Rain, Long Range Discussion, PNA, Rain, Severe Weather, T-storms, Unseasonably Cool Weather, Unseasonably Warm