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Apr
25

Rain Out and Sunshine In

Posted By · April 25, 2015 at 4:21 pm
The heavy rain and lightning will end Saturday evening and we can focus on a sunny Sunday.
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A drier weather pattern will arrive overnight, with low temperatures falling into the upper 30s and lower 40s.  After that cool start to Sunday, it will be sunny and 60 degrees on Sunday afternoon.

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The SkyTrak 13 Weather Team is tracking a dry and warmer weather pattern next week.  Monday will be sunny and near 60, but high temperatures warm a few more degrees into the lower and middle 60s for Tuesday and Wednesday.

Even warmer air arrives for the end of the week.  Highs will be in the upper 60s and lower 70s on Thursday and Friday.

Right now we have the weekend warm and dry too.  Forecast highs are in the middle and upper 70s.  We will monitor the Saturday forecast closely.  It is the first big weekend of the month of May and there are 2 big events on Saturday.  The 500 Festival Mini Marathon is on Saturday morning and you can watch it on WTHR Channel 13 this year.  Rev Indy is a big event at the Indianapolis Motor Speedway on Saturday night.

7dya

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Apr
20

Monday Marks Prolonged Spell Of Below Normal Temperatures

Posted By · April 20, 2015 at 1:18 pm

In the wake of a cold front that passed through the Indy metro area around 9am this morning… gusty wind and below normal temperatures are the big story this afternoon.  Temperatures range from 45 to 55 degrees for late day highs.

TEMPS TEMPS OHV FRONT

The aforementioned front is now pushing across Ohio and attached to an area of low pressure over the Great Lakes.  This low will be the driver of our weather for several days and becomes cut-off from the main jet stream.  This allows it to spin around the Great Lakes day after day and reinforce already cooler than normal conditions.

LOW PRESSURE RPM 5PM TODAY RPM 9PM TODAY

This is the first day of an unseasonably cool stretch of days with temperature anomalies 10-15 degrees below normal.

Spotty showers pop up during peak heating this afternoon as the atmosphere destabilizes.  Clouds and showers diminish after sunset, but the brisk wind remains a constant heading into Tuesday morning.

PLANNER EVENING PLANNER TONIGHT

Despite clearing and lows dropping into the upper 30s and lower 40s… the steady breeze keeps frost from morning tonight.  Expect brisk conditions to linger into Wednesday morning as the pressure gradient around the Great Lakes Low keeps the wind in the 10mph+ range for the next 48 hours.

LOWS TONIGHT

Morning sunshine tomorrow gives way to a building cloud deck and more showers in the afternoon.  Highs near 60 degrees Tuesday but a strong wind of 25-35mph makes it feel cooler.

RPM 7AM TUESDAY RPM 4PM TUESDAY PLANNER TUESDAY

Steady wind saves the region from frost Tuesday and Wednesday mornings.  But we’ll need to monitor Thursday and Friday mornings for frost potential and the wind eases and we’ll see greater raditional cooling.  Either way lows will chill into the low to mid 30s.  A bright finish to the week gives way to clouds and showers heading into Saturday.

RPM 5PM WEDNESDAY RPM 7AM THURSDAY JET STREAM 7DAY

All signs point to a much colder than normal finish to the month of April and perhaps beginning of May.  Stay tuned for updates – Sean Ash

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Mar
17

Northern Lights Possible This Evening?

Posted By · March 17, 2015 at 4:54 pm

It is a possibility here in Central Indiana as the Space Weather Prediction Center alerted of a severe geomagnetic storm in progress.  According to the SWPC this is due to the interaction of a pair of coronal mass ejections (CMEs) spewing from the sun earlier today and now interacting with the Earth’s atmosphere.

They note that similar events have produced aurora borealis as far south as Alabama, North Carolina and northern California.  It’s not a given, but we do expect clear conditions this evening.  They’re predicting the storm to diminish as the day ends… so it may be a race against time with our sunset time at 7:54pm.  Keep an eye to the north and please let us know if you’re fortunate enough to see this atmospheric treat.

Below is an aurora forecast map produced by the University of Alaska at Fairbanks:

AURORA FORECAST

 

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Yippee!!!!!  The wait was well worth it.  Shortly after 3pm, under a hazy sunshine Indianapolis recorded its first 60 degree temperature since November 30th.  This marks the latest first 60 degree day since March 12th of 1982, and the 101 day streak without a 60 degree temperature is the 17th longest stretch on record since 1871.

The average date for the first 60 degree day in the city if February 4th and the first last year occurred on February 20th.  Get outside and enjoy!  We’ll have more 60s Thursday before another round of heavy, steady rain arrives Friday.  You can get the extended forecast analysis from an earlier blog here.

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Mar
06

Slow Weekend Warming

Posted By · March 6, 2015 at 5:14 am

It is REALLY cold out there this morning.Many towns are below freezing now and others in the single digits. The record in Indianapolis is -6 set in 1960.

Wear your warmest today because our wind chills are in the 0 to -10 range. The sun will help push our highs today back to near 30 degrees during the afternoon. Look for no snow and temperatures in the 20s as high school teams around Indiana play in the sectional finals in 64 sites around the state.

The major weather pattern change begins tomorrow with highs around 40 degrees Saturday and Sunday.

On This Date in Central Indiana Weather History……
1961 : Kokomo…A tornado picked up a mobile home and hurled it into a 2 story home at 6:50 am. One person was killed.

blog1extended

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Mar
04

Snow Moves Out – Cold Thursday

Posted By · March 4, 2015 at 10:19 pm

The latest weather system brought several inches of new snow to the southern third of Indiana late Wednesday.  Snow will end overnight, but watch for slick and snow covered roads especially south of Indianapolis through Thursday morning.  There might even be a few slick roads across the rest of the area due to refreezing.

It will be colder overnight, with lows near 10.  Temperatures won’t move much on Thursday, with morning clouds and some afternoon sun.  Forecast highs are in the upper teens and lower 20s.

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Near record cold is forecast for Friday morning, with lows near 0.  The record is -1 in 1978.  Highs on Friday will be near 30 degrees, with mostly sunny skies.

The weather pattern will be dry for the end of the week and the weekend.  Forecast highs are near 40 degrees on Saturday and Sunday.  Remember Daylight Saving Time begins on Sunday.  This means your turn your clocks forward 1 hour when you go to bed Saturday night.  It is also a great idea to change the batteries in smoke and carbon monoxide detectors.

A big warm-up is in the forecast for early next week.  We have 40s for Monday, lower 50s on Tuesday and upper 50s on Wednesday.  Finally there is a taste of Spring in the forecast.

7DAY

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Mar
02

Slick Start Tuesday To Snow Potential Wednesday

Posted By · March 2, 2015 at 4:32 pm

Buckle up for a wild weather ride the next 48 to 72 hours Central Indiana.  All is quiet this evening with an increase in clouds expected as our next weather system approaches from the west.  All of the viewing area is under a Winter Weather Advisory that begins at 3am and runs until midday Tuesday.

ADVISORY HEADLINES

An area of sleet and freezing rain expands eastward late tonight into the Tuesday morning commute.  It may not be heavy precipitation, but it will be effective falling onto sub-freezing surfaces like sidewalks and roadways.  This will lead to slick travel for several hours in the morning with temperatures not anticipated to climb above freezing until around midday.

PLANNER TONIGHT RPM 12AM TUESDAY RPM 6AM TUESDAY RPM 12PM TUESDAY

HEADLINES 2

Rising temperatures and locally heavy rainfall increases the risk for flooding Tuesday evening… though it’s uncertain at this point where the heaviest rain-banding will set up tomorrow.  It should be noted that underneath the heavier bands of rain rainfall amounts of .25″ to .75″ are possible.  Rainfall on the heavy snow pack and frozen ground could lead to excessive runoff.

PLANNER TOMORROW RPM 10PM TUESDAY RPM 10AM WEDNESDAY

We’re closely monitoring snow potential Wednesday as colder air returns and teams up with abundant moisture from the Gulf of Mexico.  At this juncture it’s a bit uncertain where the heaviest snow axis develops.  But it appears somewhere between I-70 and the Ohio River could be the bulls eye… as various model outputs show heavy (6″+) snowfall in this region.  We’ll refine this forecast tomorrow and don’t be surprised if the Winter Storm Watches in southern Indiana/northern Kentucky expand farther north to include more of Central Indiana.

RPM 1PM WEDNESDAY 7DAY

Near record cold temperatures arrive after Wednesday, with lows nearing zero to sub-zero Thursday and Friday mornings.  Though bitterly cold… both days feature decent sunshine and quiet conditions compared to the beginning of the week.  We’re going to keep the weekend dry for now but may need to add light precipitation chances.  Stay tuned for updates on a highly changeable forecast for Wednesday – Sean Ash

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Feb
27

Latest Timing and Totals for Sunday’s Snow

Posted By · February 27, 2015 at 10:51 pm

Here is the latest timing for the snow and wintry mix on Sunday.  The timing is similar from earlier analysis, but the rain/snow line is a little farther south.  Remember where this stays all snow, snowfall potential is 4″+.  We still the best chance for these higher totals will be north of Indianapolis.  The rest of central Indiana will be in the range of 2-4 inches of snow.

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