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Hockeymidget8
Rank: F5 Superstorm
21 years old
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Southern Oakland County, MI
Born Dec-28-1992
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Hockeymidget8

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7 Mar 2011
GFS has consistently been showing a pretty strong clipper come this weekend...

18z GFS









11 Nov 2010
A lengthy and informative introduction course to the upcoming deal-pol upgrade to all NWS radars is now available.
http://wdtb.noaa.gov/courses/dualpol/outreach/index.html

As well as a schedule for upgrades...(KLOT near Chicago is going to be one of the firsts).
http://www.roc.noaa.gov/WSR88D/PublicDocs/...entSchedule.pdf

Very interesting stuff. Should add a whole new level to radar-based now-casting.
9 Aug 2010
I think this is a separate system from the 9th-12th thread, but correct me if I'm wrong.


See Text area up for the ND/MT area for the 11th

QUOTE
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 AM CDT MON AUG 09 2010

VALID 111200Z - 121200Z

...SYNOPSIS...
AS A MID-LEVEL SHORT-WAVE TROUGH CONTINUES EWD/ESEWD ACROSS THE
GREAT LAKES AND EVENTUALLY BECOMES ABSORBED WITHIN THE BROADER
CYCLONIC FLOW FIELD AROUND THE LARGE ERN CANADA/NERN U.S.
TROUGH...THE WRN U.S. TROUGH SHOULD PROGRESS SLOWLY EWD THROUGH THE
PERIOD.

AT THE SURFACE...A SOMEWHAT DIFFUSE SURFACE FRONT SHOULD EXTEND FROM
THE MID-ATLANTIC REGION WNWWD ACROSS THE MIDWEST AND INTO THE NRN
PLAINS...WHILE A STRONGER COLD FRONT MAKES STEADY EWD PROGRESS
ACROSS THE NWRN U.S./NRN INTERMOUNTAIN REGION.

...MT/ND AND VICINITY...
AS HEIGHT FALLS ALOFT BEGIN SPREADING EWD IN CONJUNCTION WITH SLOW
PROGRESSION OF THE NW U.S. UPPER LOW/TROUGH...INCREASING QG FORCING
IS FORECAST FROM ID/MT DURING THE DAY AND INTO THE NRN PLAINS
THROUGH THE SECOND HALF OF THE PERIOD. MODEST DESTABILIZATION
EXPECTED ACROSS MT AND VICINITY COMBINED WITH A BELT OF
MODERATELY-STRONG SWLYS AT MID-LEVELS APPEARS SUFFICIENT TO SUPPORT
AT LEAST ISOLATED SEVERE CELLS THROUGH THE EVENING.

FARTHER E...A LOW-LEVEL JET STRENGTHENING DURING THE EVENING ACROSS
THE NRN HIGH PLAINS SHOULD SUPPORT INCREASING STORMS OVER ERN MT AND
THE WRN DAKOTAS. WHILE MUCH OF THIS CONVECTION SHOULD BE ELEVATED
ATOP A MORE STABLE BOUNDARY LAYER...ISOLATED LARGE HAIL WILL BE
POSSIBLE WITH STRONGER CELLS THROUGH THE END OF THE PERIOD.

http://www.spc.noaa.gov/products/outlook/day3otlk.html

And mentioning possible "widespread/substantial" severe weather sometime during Thursday or Friday (no specific risk area up)
QUOTE
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0349 AM CDT MON AUG 09 2010

VALID 121200Z - 171200Z

...DISCUSSION...
WHILE MEDIUM-RANGE MODELS ARE IN GENERALLY DECENT AGREEMENT WITH THE
LARGE SCALE PATTERN WELL INTO THIS FORECAST PERIOD...SMALLER-SCALE
DIFFERENCES ARE READILY APPARENT -- PARTICULARLY WITH THE EJECTION
OF THE PERSISTENT WRN U.S. TROUGH. WITH THIS FEATURE GENERALLY
PROGGED TO PROGRESS ACROSS THE N CENTRAL CONUS -- ACCOMPANIED BY A
RELATIVELY STRONG COLD FRONT...THREAT FOR SEVERE WEATHER COULD
BECOME RELATIVELY WIDESPREAD/SUBSTANTIAL AT SOME POINT WITHIN THE
DAY 4-5 PERIOD /THU. 8-12 AND FRI. 8-13/ ACROSS THE NRN AND POSSIBLY
CENTRAL PLAINS AND EWD INTO THE UPPER GREAT LAKES REGION. GIVEN THE
MODEL DIFFERENCES SUBSTANTIAL ENOUGH TO CAST DOUBT ON SPECIFIC
LOCATION/TIMING OF THE THREAT...WILL NOT INTRODUCE ANY THREAT AREAS
THIS FORECAST. HOWEVER...EXPECT THAT AREAS WILL EVENTUALLY BE
INCLUDED IN LATER OUTLOOKS AS THE SCENARIO UNFOLDS.

http://www.spc.noaa.gov/products/exper/day4-8/
31 Jul 2010
Found this on another form, really found it useful and informative.

QUOTE("AWX")
I am putting this here cause it is not really GR related or weather event related. I am making this thread to post some good links for learning to interpret radar images, some of the modules are very in depth from the NWS and take time to watch, but they are very useful.

From this link the radar related modules are found in section 3,4, and 5. These are more somewhat advanced concepts such as close range tornadogenesis and tornadoes from mesovortices and supercell collapse phase.
http://www.wdtb.noaa.gov/courses/awoc/awoc.html#SevereTrack


Here is some info on a product I bet most people in this forum completely ignore...Spectrum Width.
http://www.stormchasers.au.com/lemon13.htm

Here is some very basic info on WSR-88D's from the NWS.
http://www.srh.noaa.gov/jetstream/doppler/doppler_intro.htm


You will have to register here, I did, and i get 0 emails from them and what not, so do not worry about anything like that. But here is some more learning modules.
http://www.meted.ucar.edu/topics_radar.php

Here is some info on the upcoming dual pol and modules on the products offered and how to use them.
http://wdtb.noaa.gov/modules/dualpol/index.htm


http://www.grlevelxmods.com/forum/viewtopi...f=119&t=403

(got permission to post it here)
11 May 2010
I know that various "tilts" are available to look at for radar returns, but I'm not sure what the difference is in the image between different tilts, and I'm not sure when I should be looking at tilts other than the default 0.5 degree angle. My house is pretty close to a radar site, and I've noticed that by going to higher tilt angles I can get rid of some of the weird returns that show when a storm is near the radar. But I'm not sure if I should be reading these returns the same way as I would the 0.5 degree tilt, since the image is somewhat different.

Any help?
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28 Dec 2011 - 11:47


9 Aug 2011 - 18:58


9 May 2011 - 21:43


25 Apr 2011 - 7:25


17 Mar 2011 - 21:02

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