(meteorobs) Hazy sky

pzeller1966 pzeller1966 at gmail.com
Fri Aug 1 14:07:04 EDT 2014


I found a map on Weather Underground that shows lots of smoke over the
Midwest today (Aug. 1). Minnesota and Wisconsin really have the worst of
it.
On Aug 1, 2014 2:00 PM, "Bruce McCurdy" <bmccurdy at shaw.ca> wrote:

> Is this somehow related to forest fire smoke? We got inundated with it in
> Alberta a while back; during some of my observatory shifts even as the
> weather office was reporting “clear skies” the daytime sky was almost ashen
> in colour, with even the Sun appearing substantially dimmer (through a
> welder’s glass) and bronze in colour (when glimpsed naked eye). Not as
> extreme as a couple of years ago, when one afternoon at the observatory the
> Sun went “out” in late afternoon with nary a cloud visible in the sky, just
> turned shades of red and pink as it faded right into the smoke.
>
>
>
> Not sure how the trade winds may have carried that most recent stuff, but
> it was plenty thick so may not have completely dissipated in the process.
> Here in Edmonton it took a day of torrential rain (~80 mm) last week before
> the blue sky returned.
>
>
>
> Bruce
>
> *****
>
>
>
> *From:* meteorobs-bounces at meteorobs.org [mailto:
> meteorobs-bounces at meteorobs.org] *On Behalf Of *pzeller1966
> *Sent:* Friday, August 01, 2014 11:13 AM
> *To:* Meteor science and meteor observing
> *Subject:* Re: (meteorobs) Hazy sky
>
>
>
> Paul Martsching's post has me wondering if there isn't something going on
> with the atmosphere over the Midwest this week. I've had the same
> experience in Indiana. On nights that were forecast to be crystal clear
> with relatively low humidity there's been a persistent haze that has really
> cut my limiting magnitude and discouraged observing. This morning it was
> about +3.8 and I can usually get close to +5.0 or higher even though I'm in
> the Indianapolis suburbs. I'm wondering if the weather systems passing
> through have brought in wildfire smoke from out west?
>
> On Aug 1, 2014 11:09 AM, "Paul Martsching" <pmartsching at mchsi.com> wrote:
>
> Wednesday evening / Thursday morning the worst haze / general limiting
> magnitude that I have ever seen without fog, or clouds.  At the zenith LM ~
> 5.0.  In the southern sky Antares was the only star for many degrees above
> the horizon.  In the NE, which is usually the best direction, stars dimmer
> than +2 couldn't be seen 20 degrees above the horizon.   I did see one +3
> SDA cross Cygnus (overhead) as I was checking out how bad the sky really
> was about midnight.  On the drive out and back no fog what so ever.  It was
> nearly as bad last night, so I didn't go out.  The weather men keep talking
> about the low dew points (in the 50's) and the dry and comfortable air, but
> the sky is milky in day time and the haze is obvious.  At night the
> temperature drops and the haze gets much worse.  Maybe a cold front will
> come thru and get rid of some of the haze.  Hoping for clear and less hazy
> sky soon.
>
> Paul Martsching in Iowa
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