[NLRS] Tropo?

[Jon Platt via NLRS]

The 1800 UTC Sat Dec 13 Hepburn forecast map is now showing some moderate enhancement for MN.  Again, regional.  See http://www.dxinfocentre.com/tropo.html  .
 
Also the APRS propagation map is currently showing regional enhancement.  http://aprs.mountainlake.k12.mn.us/   
 
Sure would enjoy some of the 60 degree F air down here at the surface !
 
73, Jon
W0ZQ
 
 
-----Original Message-----
From: Bruce Richardson <w9fz at w9fz.com>
To: Jon Platt <w0zq at aol.com>
Cc: nlrs <nlrs at mailman.qth.net>
Sent: Fri, Dec 12, 2014 12:51 pm
Subject: Re: [NLRS] Tropo?

.....stuffed phone in pocket and msg sent.
...then temp dropped to +2 as we entered cloud deck. This overcast spreads as 
far as the eye can see.

So, I would expect good conditions and wish I had more of a station (in 
Woodbury) to check it out.
73
Bruce FZ

Rust Never Sleeps

> On Dec 12, 2014, at 12:46 PM, Bruce Richardson <w9fz at w9fz.com> wrote:
> 
> Just flew in from Seattle and I noted temp was +16C from 8000 down to 1500 ft. 
Then tpp
> 
> Rust Never Sleeps
> 
>> On Dec 12, 2014, at 8:46 AM, Jon Platt via NLRS <nlrs at mailman.qth.net> wrote:
>> 
>> 
>> 
>> 
>> The upper Midwest weather stations are showing strong inversions on their 
Skew-T charts.   There are a number of weather sites that provide access to such 
data, here is one:  http://weather.cod.edu/analysis/  .   On the Skew-T charts 
notice the strong break to the right for temperature with a corresponding break 
to the left for dew point.  Warm dry air aloft over cooler wet air sometimes 
equals tropo.   The Hepburn maps are not showing significant enhancement 
(http://www.dxinfocentre.com/tropo.html) but maybe their update that comes out 
later today will show improvement.   None the less, perhaps there may be some 
regional tropo, especially on Saturday.   Be interesting to try the uW bands to 
see if there is improved propagation.  
>> 
>> 73, Jon
>> W0ZQ