I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

"Ron Button" wrote in message
...
I see from Earth cam thats its snowing in Chicago this morning ,whilst the
temperature is 6c,rather unusual what ?

RonB


Doesn't show on the O'Hare metars Ron. +6 yes, but rain, mostly heavy, with
distant lightning.

http://www.ogimet.com/display_metars...59&send =send

--
Bernard Burton

Satellite images and weather data for Wokingham at:
www.woksat.info/wwp.html



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In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which brought the temperature down from 8°C to 0°C before it subsequently rose in further sunshine though I'm not sure whether the shower started as rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

On Thursday, 30 March 2017 19:35:06 UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which brought the temperature down from 8°C to 0°C before it subsequently rose in further sunshine though I'm not sure whether the shower started as rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

We are in for a spate of these by the look of things.

On Thursday, March 30, 2017 at 7:35:06 PM UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which brought the temperature down from 8°C to 0°C before it subsequently rose in further sunshine though I'm not sure whether the shower started as rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

I can remember getting back to Sennen (near Land's End) one March day in the late '60s, seeing what looked like heavy snow falling to the NNW. Checked the temperature & it was 7C having reached 9C. 10 minutes later it was snowing hard. It then proceeded to settle (rare enough in itself at that location) & didn't fully melt until next morning. The minimum was 0C.

I was a young lad then, so didn't record the details, but there was no snow in Penzance (where I was at school the next day). I suspect it was a dangler just catching the tip of the peninsula.

Graham
Penzance

On 31/03/2017 08:53, Graham Easterling wrote:
On Thursday, March 30, 2017 at 7:35:06 PM UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which brought the temperature down from 8°C to 0°C before it subsequently rose in further sunshine though I'm not sure whether the shower started as rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

I can remember getting back to Sennen (near Land's End) one March day in the late '60s, seeing what looked like heavy snow falling to the NNW. Checked the temperature & it was 7C having reached 9C. 10 minutes later it was snowing hard. It then proceeded to settle (rare enough in itself at that location) & didn't fully melt until next morning. The minimum was 0C.

I was a young lad then, so didn't record the details, but there was no snow in Penzance (where I was at school the next day). I suspect it was a dangler just catching the tip of the peninsula.

Graham
Penzance

I know what you mean lads,We've all seen Spring snow showers from
convective cloud ,but that Chicago snow seemed to falling from frontal
stuff....
RonB

"Ron Button" wrote in message
...
On 31/03/2017 08:53, Graham Easterling wrote:
On Thursday, March 30, 2017 at 7:35:06 PM UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air
from
the Arctic, it can be warmed near the surface when still very cold
aloft
and with the freezing level quite low. (But I suppose the warming of
the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which
brought the temperature down from 8°C to 0°C before it subsequently rose
in further sunshine though I'm not sure whether the shower started as
rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

I can remember getting back to Sennen (near Land's End) one March day in
the late '60s, seeing what looked like heavy snow falling to the NNW.
Checked the temperature & it was 7C having reached 9C. 10 minutes later
it was snowing hard. It then proceeded to settle (rare enough in itself
at that location) & didn't fully melt until next morning. The minimum was
0C.

I was a young lad then, so didn't record the details, but there was no
snow in Penzance (where I was at school the next day). I suspect it was a
dangler just catching the tip of the peninsula.

Graham
Penzance

I know what you mean lads,We've all seen Spring snow showers from
convective cloud ,but that Chicago snow seemed to falling from frontal
stuff....
RonB





What snow Ron?. It doesn't appear in the reports for o'Hare airport. Looks
like classic thundery rain there. Are you sure of your source?

--
Bernard Burton

Satellite images and weather data for Wokingham at:
www.woksat.info/wwp.html



---
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https://www.avast.com/antivirus

On 31/03/2017 16:23, Bernard Burton wrote:
"Ron Button" wrote in message
...
On 31/03/2017 08:53, Graham Easterling wrote:
On Thursday, March 30, 2017 at 7:35:06 PM UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air
from
the Arctic, it can be warmed near the surface when still very cold
aloft
and with the freezing level quite low. (But I suppose the warming of
the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which
brought the temperature down from 8°C to 0°C before it subsequently rose
in further sunshine though I'm not sure whether the shower started as
rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

I can remember getting back to Sennen (near Land's End) one March day in
the late '60s, seeing what looked like heavy snow falling to the NNW.
Checked the temperature & it was 7C having reached 9C. 10 minutes later
it was snowing hard. It then proceeded to settle (rare enough in itself
at that location) & didn't fully melt until next morning. The minimum was
0C.

I was a young lad then, so didn't record the details, but there was no
snow in Penzance (where I was at school the next day). I suspect it was a
dangler just catching the tip of the peninsula.

Graham
Penzance

I know what you mean lads,We've all seen Spring snow showers from
convective cloud ,but that Chicago snow seemed to falling from frontal
stuff....
RonB





What snow Ron?. It doesn't appear in the reports for o'Hare airport. Looks
like classic thundery rain there. Are you sure of your source?

Yes Bernard ,I watched it for over half an hour ,and unless the
raindrops were swirling around it was snow !
Raining now tho....
RonB

On Friday, 31 March 2017 08:53:49 UTC+1, Graham Easterling wrote:
On Thursday, March 30, 2017 at 7:35:06 PM UTC+1, Tudor Hughes wrote:
On Thursday, 30 March 2017 10:52:29 UTC+1, John Hall wrote:
In message , Ron Button
writes
I see from Earth cam thats its snowing in Chicago this morning ,whilst
the temperature is 6c,rather unusual what ?

RonB

Yes, very unusual, but at this time of year even in the UK snow with a
temperature of 5 or 6C isn't unknown. If you get an outbreak of air from
the Arctic, it can be warmed near the surface when still very cold aloft
and with the freezing level quite low. (But I suppose the warming of the
Arctic over recent decades has greatly reduced the chances of such a
set-up.)
--
John Hall
"One can certainly imagine the myriad of uses
for a hand-held iguana maker"
Hobbes (the tiger, not the philosopher!)

I can certainly remember an April snow shower in the '60's which brought the temperature down from 8°C to 0°C before it subsequently rose in further sunshine though I'm not sure whether the shower started as rain or snow. Evaporative cooling?

Tudor Hughes, Warlingham, Surrey.

I can remember getting back to Sennen (near Land's End) one March day in the late '60s, seeing what looked like heavy snow falling to the NNW. Checked the temperature & it was 7C having reached 9C. 10 minutes later it was snowing hard. It then proceeded to settle (rare enough in itself at that location) & didn't fully melt until next morning. The minimum was 0C.

I was a young lad then, so didn't record the details, but there was no snow in Penzance (where I was at school the next day). I suspect it was a dangler just catching the tip of the peninsula.

If you can recall a date it might be in the tornado database of NCAR. Pity one would have to get to Exitdoor to try and find any record of a suitable occluded front.

I don't suppose you know anyone who works there?