[spotters-illianaskywarn] Re: Fwd: Mesoscale Discussion
- From: Bill Thompson <cantrell35@xxxxxxxxx>
- To: spotters-illianaskywarn@xxxxxxxxxxxxx
- Date: Fri, 14 May 2010 07:33:51 -0500
fyi
NOUS41 KWBC 042015
PNSWSH
SERVICE CHANGE NOTICE 09-52
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
315 PM EST FRI DEC 4 2008
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...AND NWS EMPLOYEES
FROM: ELI JACKS
CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH
SUBJECT: NATIONAL CHANGE IN MINIMUM HAIL SIZE CRITERION
FOR ISSUING SEVERE THUNDERSTORM WARNING /SVR/
AND SEVERE WEATHER STATEMENT SVS/ PRODUCTS
EFFECTIVE JANUARY 5 2010
EFFECTIVE TUESDAY JANUARY 5 2010 AT 0001 COORDINATED UNIVERSAL TIME
/UTC/...ALL NWS WEATHER FORECAST OFFICES /WFOS/ WILL OPERATIONALLY
CHANGE THE MINIMUM HAIL SIZE CRITERION USED TO ISSUE SEVERE
THUNDERSTORM WARNING /SVR/ AND SEVERE WEATHER STATEMENT /SVS/
PRODUCTS FROM 3/4 INCH /PENNY/ DIAMETER OR LARGER HAIL TO 1 INCH
/QUARTER/ DIAMETER OR LARGER HAIL.
NO CHANGE IS BEING MADE TO THE SVR AND SVS PRODUCT WIND CRITERION
OF WIND GUSTS EQUAL TO OR IN EXCESS OF 50 KNOTS /58 MPH/.
A PUBLIC INFORMATION STATEMENT /PNS/ SOLICITING COMMENTS REGARDING
THIS CHANGE WAS ISSUED SEPTEMBER 23 2009 /USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIFICATION/PNS09_1_INCH_HAIL.TXT
NWS RECEIVED 63 COMMENTS IN RESPONSE TO THE PNS...54 OF WHICH /86
PERCENT/ SUPPORTED THIS CHANGE. A WEB PAGE WILL BE CREATED TO
ADDRESS ALL COMMENTS SINCE SOME COMMENTS INDICATED A NEED FOR
ADDITIONAL OUTREACH. THIS WEB PAGE WILL BE AVAILABLE BY DECEMBER 15
2009 AND WILL BE PUBLICIZED VIA ANOTHER PNS.
NWS REVIEWED ALL COMMENTS BEFORE DECIDING TO CHANGE MINIMUM HAIL
SIZE CRITERION FOR SVR AND SVS PRODUCTS.
CENTRAL AND WESTERN REGION WFOS CURRENTLY ISSUE SVR AND SVS
PRODUCTS EXPERIMENTALLY USING THE 1 INCH /QUARTER/ DIAMETER OR
LARGER HAIL SIZE CRITERION /USE LOWER CASE/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIFICATION/SCN09-19HAIL_CHANGE.TXT
AND
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIFICATION/SCN09-36WR_HAIL_EXP.TXT
THESE WFOS WILL CONTINUE TO ISSUE 1 INCH /QUARTER/ HAIL SIZE
CRITERION PRODUCTS EXPERIMENTALLY THROUGH JANUARY 4 2010. ALL NWS
WFOS WILL ADOPT THE NEW CRITERION OPERATIONALLY ON JANUARY 5 2010.
FOR FURTHER INFORMATION REGARDING THIS CHANGE PLEASE CONTACT:
JOHN T FERREE
FIRE AND PUBLIC WEATHER SERVICES BRANCH
120 DAVID L. BOREN BLVD SUITE 2312
NORMAN OK 73072
405-325-2209
JOHN.T.FERREE@xxxxxxxx
NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
On Wed, May 12, 2010 at 11:32 PM, Keith Reedy <reedyk@xxxxxx> wrote:
>
>
> Sent from my iPhone
>
> Begin forwarded message:
>
> *From:* <interwarn@xxxxxxxx>interwarn@xxxxxxxx
> *Date:* May 13, 2010 12:26:21 AM EDT
> *To:* <reedyk@xxxxxx>reedyk@xxxxxx
> *Subject:* *Mesoscale Discussion*
>
>
> ACUS11 KWNS 130425
> SWOMCD
> SPC MCD 130424
> ILZ000-IAZ000-MOZ000-KSZ000-130600-
>
> MESOSCALE DISCUSSION 0536
> NWS STORM PREDICTION CENTER NORMAN OK
> 1124 PM CDT WED MAY 12 2010
>
> AREAS AFFECTED...NORTHERN MO/FAR SOUTHERN IA TO WEST CENTRAL IL
>
> CONCERNING...SEVERE THUNDERSTORM WATCH 158...
>
> VALID 130424Z - 130600Z
>
> THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 158
> CONTINUES.
>
> SEVERE TSTM WATCH 158 CONTINUES UNTIL 05Z. ALONG WITH VERY HEAVY
> RAINFALL...A SEVERE HAIL THREAT CONTINUES...AND THE DAMAGING WIND
> POTENTIAL MAY BE INCREASING ESPECIALLY ACROSS NORTHERN MO. GIVEN THE
> SCHEDULED 05Z EXPIRATION OF WW 158...WFO EXTENSIONS OR A REPLACEMENT
> WATCH WILL LIKELY BE NEEDED WITHIN THE HOUR.
>
> LEADING BRUNT OF LARGE SCALE HEIGHT FALLS AND ASSOCIATED ISENTROPIC
> LIFT/MOISTURE TRANSPORT REGIME...FOCUSED TO THE NORTH OF A WEST-EAST
> BOUNDARY NEAR/NORTH OF I-70 ACROSS MO/IL...WILL CONTINUE TO SUPPORT
> STORMS WITH VERY HEAVY RAINFALL/OCCASIONAL SEVERE HAIL OVERNIGHT
> ACROSS NORTHERN MO INTO ADJACENT SOUTHEAST IA/WEST CENTRAL IL. IN
> ADDITION...EVEN WITH INCREASING NEAR-SURFACE INHIBITION NORTH OF
> WEST-EAST FRONT ACROSS MO...FAST-MOVING/WELL-ORGANIED QLCS NEARING
> THE KC METRO AREA MAY POSE AN INCREASING DAMAGING WIND POTENTIAL
> ENE-WARD ESPECIALLY ACROSS NORTHERN MO OVERNIGHT.
>
> .GUYER.. 05/13/2010
>
> ..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
>
> ATTN...WFO...ILX...LSX...DVN...DMX...EAX...
>
> LAT...LON 39899033 39719157 39569300 39889335 39829420 39659503
> 40289510 40359499 40649381 41149152 41198925 40438890
> 39899033
>
> WWWW
>
>
> $$
>
> This weather bulletin was brought to you by InterWARN at
> <http://www.interwarn.com>www.interwarn.com
>
>
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