Current Mesoscale Discussions
Updated:  Sun May 19 07:57:03 UTC 2013

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MD Legend Image Mesoscale Discussion # 693 Mesoscale Discussion # 692
MD0693 Thumbnail Image Mesoscale Discussion #0693
Issued: 19/0732 UTC
Until: 19/0900 UTC
Concerning: SEVERE THUNDERSTORM WATCH 178...
MD0692 Thumbnail Image Mesoscale Discussion #0692
Issued: 19/0648 UTC
Until: 19/0815 UTC
Concerning: SEVERE THUNDERSTORM WATCH 175...

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  • SPC MD 693

    Sun, 19 May 2013 07:33:03 +0000 UTC

    MD 0693 CONCERNING SEVERE THUNDERSTORM WATCH 178... FOR SERN ND AND ADJACENT NWRN MN COUNTIES
    MD 0693 Thumbnail Image

    
MESOSCALE DISCUSSION 0693
NWS STORM PREDICTION CENTER NORMAN OK
0232 AM CDT SUN MAY 19 2013

AREAS AFFECTED...SERN ND AND ADJACENT NWRN MN COUNTIES

CONCERNING...SEVERE THUNDERSTORM WATCH 178...

VALID 190732Z - 190900Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 178
CONTINUES.

SUMMARY...LOCALLY STRONG WIND GUSTS WILL BE POSSIBLE THROUGH 09Z
ACROSS THE SRN EXTENT OF WW 178 AS AN ARCING LINE OF STORMS IN ERN
SD MOVES INTO SERN ND AND THE ADJACENT MN COUNTIES BETWEEN 08-09Z. 
THE SEVERE WEATHER THREAT IS LIKELY DIMINISHED IN THE NRN PART OF WW
178.

DISCUSSION...TRENDS IN RADAR IMAGERY OVER ERN ND INDICATED THE
STORMS THAT MOVED THROUGH THE KJMS AREA AROUND 0430Z HAVE SINCE
WEAKENED AS THEY MOVED INTO THE NWRN PART OF WW 178. A MORE STABLE
ENVIRONMENT ACROSS THE NRN PART OF THIS WATCH SUGGESTS THE SEVERE
WEATHER THREAT IS ALL BUT OVER N OF A BARNES/CASS COUNTIES ND TO
NORMAN COUNTY MN LINE.  

MEANWHILE...RADAR MOSAIC INDICATED AN ARCING LINE OF STORMS
EXTENDING GENERALLY NW-SE FROM ERN SD INTO FAR SWRN MN...WITH THE
NERN SD PORTION OF THIS LINE MOVING NEWD AROUND 40 KT.  THE KHON
OBSERVATION REPORTED A WIND GUST TO 47 KT WHEN THE STORMS MOVED
THROUGH AT 0559Z.  ALTHOUGH SURFACE BASED INHIBITION HAS
STRENGTHENED PER MODIFICATION OF THE 00Z ABR SOUNDING FOR CURRENT
CONDITIONS...THE OBSERVED NEAR SEVERE WIND GUST AT KHON AND A NEWD
MOVEMENT OF THIS LINE AT 40 KT SUGGEST LOCALLY STRONG WIND GUSTS
WILL BE POSSIBLE INTO THE SRN PART OF WW 178 BETWEEN 08-09Z.

..PETERS/HART.. 05/19/2013

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FGF...ABR...BIS...

LAT...LON   46039629 45909789 46359814 46859845 47579841 47729712
            47539623 47309601 46039629
    Read more

  • SPC MD 692

    Sun, 19 May 2013 06:49:03 +0000 UTC

    MD 0692 CONCERNING SEVERE THUNDERSTORM WATCH 175... FOR SWRN-SOUTH CENTRAL IA/FAR NWRN-NORTH CENTRAL MO
    MD 0692 Thumbnail Image

    
MESOSCALE DISCUSSION 0692
NWS STORM PREDICTION CENTER NORMAN OK
0148 AM CDT SUN MAY 19 2013

AREAS AFFECTED...SWRN-SOUTH CENTRAL IA/FAR NWRN-NORTH CENTRAL MO

CONCERNING...SEVERE THUNDERSTORM WATCH 175...

VALID 190648Z - 190815Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 175
CONTINUES.

SUMMARY...LOCALLY STRONG WIND GUSTS REMAIN POSSIBLE AS A BOWING LINE
OF STORMS ADVANCES ENEWD AT 40-45 KT INTO SOUTH CENTRAL IA AND NORTH
CENTRAL MO.  FARTHER N...THE OVERALL SEVERE WEATHER THREAT APPEARS
TO BE WEAKENING AS THE NRN EXTENT OF THIS CONVECTION IS MOVING
SLOWER THAN THE SRN PORTION.

DISCUSSION...AT 0630Z...REGIONAL RADAR IMAGERY SHOWED A BOWING LINE
OF STORMS EXTENDING FROM SWRN IA SSEWD INTO FAR NRN MO AT 25 SW
KLWD...AND THEN TRAILING SWWD INTO THE KANSAS CITY METRO AREA AND
ADJACENT PART OF NERN KS.  THE ACTIVITY LOCATED IN DAVIESS TO WRN
HARRISON COUNTIES MO AND RINGGOLD COUNTY IA HAS THE FASTEST ENEWD
MOVEMENT AND COMBINED WITH 45 KT SSWLY LLJ EXTENDING INTO THIS AREA
SUGGESTS LOCALLY STRONG WINDS REMAIN POSSIBLE. SOUTH OF THESE
COUNTIES...THE GUST FRONT HAS BECOME MORE DISPLACED FROM THE TSTMS
SUGGESTING THE THREAT FOR STRONGER WIND GUSTS WILL TEND TO DIMINISH.
 ALTHOUGH LOCALLY STRONG WIND GUSTS REMAIN POSSIBLE IN THE SHORT
TERM /07-08Z/...THE STRENGTH OF SURFACE BASED INHIBITION WITH EWD
EXTENT SUGGESTS THE POTENTIAL SEVERE WEATHER THREAT SHOULD REMAIN
LOCALIZED AND PRECLUDES THE NEED FOR A NEW WATCH.

..PETERS/HART.. 05/19/2013

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...DMX...EAX...FSD...OAX...

LAT...LON   39979364 39749428 40259480 40669511 41369580 42399598
            43129659 43499633 42889517 41649472 40649358 39979364
    Read more
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