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July 1-21, 2022 | Ring of Fire/MCS Outbreak Sequence


ClicheVortex2014

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Man, it's always crazy to see convection that looks like it should be upscale enough to turn into a big ol' MCS yet sometimes it tries so hard to hold onto that super cellular shape/embedded supercells, sometimes an MCS goes from upscale to breaking up into semi-discrete storm mode.

Not really sure what dictates whether an MCS stays upscale or clears out for discrete/semi-discrete mode, all I know is that I rarely ever see it happen, usually once an MCS always an MCS (until eventual death)

Screenshot_20220716-210638_RadarScope.thumb.jpg.b3bc3442c5d325fdab2f1177bab6f642.jpg

 

 

Edited by Neoncyclone
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Couple of slight risk areas added on new day 1.

Quote
DAY 1 CONVECTIVE OUTLOOK    
NWS STORM PREDICTION CENTER NORMAN OK  
1256 AM CDT SUN JUL 17 2022  
  
VALID 171200Z - 181200Z  
  
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE  
OZARKS INTO THE OHIO VALLEY...  
   
..SUMMARY  
  
SCATTERED AREAS OF THUNDERSTORMS WILL IMPACT A LARGE AREA FROM THE  
OZARKS EASTWARD ACROSS THE OHIO VALLEY AND TOWARD THE APPALACHIANS.  
A FEW SEVERE STORMS ARE EXPECTED THROUGHOUT THE PERIOD. ISOLATED  
SEVERE STORMS MAY ALSO OCCUR NEAR THE NORTH DAKOTA/MINNESOTA BORDER,  
AND ACROSS SOUTHWEST MONTANA.  
   
..MO/AR EASTWARD ACROSS KY AND VICINITY  
  
STORMS ARE FORECAST TO BE ONGOING EARLY THIS MORNING FROM NORTHERN  
MO INTO SOUTHERN IL, AIDED BY SOUTHWESTERLY 850 MB WINDS OVER 30 KT  
AND AS A SHORTWAVE TROUGH MOVES EAST/SOUTHEAST TOWARD THE OH VALLEY.  
THIS ACTIVITY WILL BE A BIT ELEVATED, BUT COULD PRODUCE STRONG  
OUTFLOW. LATER IN THE DAY, HEATING AHEAD OF A COLD FRONT IN MO WILL  
RESULT IN SCATTERED STORMS AFTER 21Z, AND THIS ACTIVITY COULD  
PRODUCE HAIL AND DAMAGING GUSTS AS THEY EXPAND SOUTHWARD ACROSS AR  
DURING THE EVENING AND OVERNIGHT. OTHER STORMS ARE POSSIBLE ACROSS  
THE LOWER OH VALLEY AS 2000-2500 J/KG MUCAPE DEVELOPS. OUTFLOWS FROM  
EARLY DAY CONVECTION MAY PLAY A ROLE IN POSITIONING THESE DIURNAL  
STORMS, BUT LOW-LEVEL SHEAR COULD FAVOR A BRIEF TORNADO.  
   
..SOUTHERN OH...NORTHEAST KY...WV AND WESTERN VA/MD  
  
A LEADING DISTURBANCE AHEAD OF THE MAIN UPPER TROUGH WILL AFFECT THE  
OH/KY/WV AREA DURING THE AFTERNOON, RESULTING IN INCREASING MEAN  
WIND SPEEDS ALOFT. THIS REGION WILL BE WITHIN THE 850 MB THETA-E  
PLUME, AND STRONG HEATING WILL DEVELOP OVER KY. STORMS ARE EXPECTED  
TO DEVELOP OVER SOUTHERN OH AND NORTHERN KY AFTER 18Z, WITHIN A  
DIFFUSE WARM ADVECTION ZONE, WITH MODELS SUGGESTING AN EVENTUAL LINE  
OF STORMS WITH STRONG OUTFLOW POTENTIAL. PLENTIFUL MOISTURE AND  
MUCAPE OVER 2000 J/KG MAY SUPPORT A FORWARD-PROPAGATING SEVERE-WIND  
THREAT, DESPITE RELATIVELY WEAK DEEP-LAYER SHEAR.  
   
..SOUTHWEST MT  
  
AN UPPER LOW WILL DROP SOUTHEASTWARD INTO WA DURING THE DAY, WITH  
NEUTRAL HEIGHT TENDENCIES FARTHER EAST INTO MT. MIDLEVEL WESTERLIES  
OF 40-50 KT WILL EXIST OVER ID AND WESTERN MT, AND STEEP LAPSE RATES  
WILL DEVELOP DURING THE DAY NEAR A SURFACE TROUGH EXTENDING FROM  
NORTHERN NV INTO MT. AS THE AIR MASS BECOMES UNCAPPED AFTER 21Z,  
SCATTERED HIGH-BASED STORMS WILL FORM OVER SOUTHWEST MT, AND MOVE  
INTO CENTRAL MT THROUGH 00Z. FORECAST SOUNDINGS SHOW MINIMAL  
INSTABILITY, BUT LONG HODOGRAPHS MAY FAVOR A FEW LONGER-LIVED STORMS  
CAPABLE OF LOCALLY STRONG WIND GUSTS, GIVEN INVERTED-V PROFILES.  
   
..FAR NORTHWEST MN AND NORTHEAST ND  
  
AN UPPER RIDGE WILL BUILD OVER THE NORTHERN HIGH PLAINS THROUGH 00Z,  
WITH GRADUAL HEIGHT FALLS THEREAFTER AS A LOW-AMPLITUDE WAVE ROUNDS  
THE RIDGE ACROSS SOUTHERN SK AND MB. WEAK CONVERGENCE WILL DEVELOP  
NEAR A SURFACE TROUGH LATE IN THE DAY, WITH STRONG HEATING OVER THE  
WESTERN DAKOTAS. DEWPOINTS IN THE 65-70 F RANGE APPEAR LIKELY DURING  
THE LATE AFTERNOON AND EVENING NEAR THE RED RIVER, WITH MINIMAL  
CAPPING. SEVERAL CAMS SUGGEST AT LEAST ISOLATED CELLS WILL FORM  
AFTER 22Z WITHIN THE UNSTABLE AIR MASS, AND LARGE HAIL WILL BE THE  
PRIMARY RISK WITH 70+ KT HIGH-LEVEL NORTHWEST FLOW CREATING  
LONG/STRAIGHT HODOGRAPHS.  
  
..JEWELL.. 07/17/2022 

 

 

spccoday1.categorical.latest.png

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9 minutes ago, ClicheVortex2014 said:

This is insane. The only way you can tell which is which is from the winds. Good ol' geography.

 

yeah, what? GFS says the 850mb temp will be 24C in England when the average surface temperature may be under 24C. Hence the 41 C surface temp at London.

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Quote
Mesoscale Precipitation Discussion 0519
NWS Weather Prediction Center College Park MD
1235 PM EDT Sun Jul 17 2022

Areas affected...Upper Ohio River Valley

Concerning...Heavy rainfall...Flash flooding possible

Valid 171630Z - 172230Z

SUMMARY...Approaching heavy showers and thunderstorms will
strengthen this afternoon, resulting in excessive rainfall rates
>1.5"/hr. Flash flooding is possible, particularly in urbanized
communities, low lying spots, and poor drainage areas.

DISCUSSION...Satellite imagery depicts a swath of showers and
thunderstorms moving northeast towards western PA, western WV, and
new convection developing in eastern KY. A robust 500mb trough is
tracking through the Great Lakes this morning while a surface warm
front lifts north through the Ohio Valley and into the northern
Mid-Atlantic. Morning soundings do show rich atmospheric moisture
available and sufficient instability already in place. The 12Z ILN
sounding showed PWs up to 1.94" and MLCAPE >1,200 J/kg. RH values
between the low-to-mid levels averaged out at 85%. The main reason
for lesser rainfall rates thus far is residency time as 850-300mb
mean flow has been 20-25 kts, keeping most cells moving and not
training over some areas for the time being. Rates have also been
manageable for the most part due to extensive cloud cover that is
helping to limit destabilizing the atmosphere early on.

This should change around midday and into the afternoon hours
though. Farther west, thunderstorms tracking north of the
Ohio-Mississippi River Confluence and across east-central IN will
push east and track into south-central OH and northern KY over the
next couple hours. CAMs show a strengthening 850mb jet across
southern OH throughout the afternoon (up to 35-40 kts) as the
500mb trough deepens over the Lower Great Lakes. This will result
in a surge in PWs, rising up to 2" by 20-22Z around Pittsburgh.
These PWs are above the 90th climatological percentile for much of
eastern OH and western PA. MLCAPE will rise as well, eventually
hovering around 1,500 J/kg with higher values present in the more
southern portion of the highlighted area.

In addition to the increasing moisture content and instability
aloft, soil moisture is gradually rising, especially in southwest
PA where early morning thunderstorms did result in locally heavy
rainfall. The combination of the accelerating 850mb jet & rise in
moisture directed into higher terrain could also lead to localized
orographic enhancement. Farther south, towards southern WV and
eastern KY, there is stronger surface based heating that will
result in a more unstable environment, even though the best
moisture plume will be farther north. The highlighted area could
see storms contain rainfall rates >1.5"/hr, topping out around
2"/hr in the most intense activity. 1-hr FFGs are lowest in
east-central OH, southwest PA near the Pittsburgh metro, and into
central WV.

Mullinax

 

 

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Question for the members in the middle of the country. How does weeks of temps over 100F affect crops, like corn in particular.  Corn does ok in Mexico, but not sure it’s that hot given the elevation. 
 

asking cause it seems like TX north to SD is forever over 100 as a high. 

Edited by StretchCT
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9 minutes ago, StretchCT said:

Question for the members in the middle of the country. How does weeks of temps over 100F affect crops, like corn in particular.  Corn does ok in Mexico, but not sure it’s that hot given the elevation. 
 

asking cause it seems like TX north to SD is forever over 100 as a high. 

I'm sure heat is fine as long as there's enough rain. But I'd imagine large-scale farmers have an irrigation system in place in case of extreme droughts. Ya know, because the Dust Bowl and all

I have a feeling @SoDakFarmer would know more.

Edited by ClicheVortex2014
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So much for our rainy day here.  Local mets said 1-2" possible throughout the entire day. Central Ohio been stealing the show all day. Although some showers finally starting to make their way north. Sucks. Been gloomy all day. 

Edited by NWOhioChaser
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Corn around here, central Indiana, got in late this year and a lot l see is just starting to tassel  The high temperatures are bad for the pollination process and can prevent the ears from fully filling in. But I think our current drought condition is the bigger problem at the moment.  

My family's crops in Western Illinois have gotten rain when we've really needed it so  looks pretty good over there near the Illinois River at the moment. We did get some corn flattered by thunderstorm winds, but luckily no real hail damage this year (so far) 

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Crazy NW flow potential over the next week or so

Also... check out the literal PV in Alaska. Wild for July. I'm gonna miss the prospect for NW flow events but I'll be trading it in for even more of a year-round severe weather climatology. I'm gonna be about half way between Nashville and Knoxville.

gfs_z500a_namer_fh0-180.gif

Edited by ClicheVortex2014
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2 hours ago, snowlover2 said:

Glad we are finally back. Had some really loud storms around 5am this morning and again after 8am. Pretty amazing how loud that night thunder can get.

Yea was a loud night for sure... luckily I was off today.

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1 hour ago, ClicheVortex2014 said:

Crazy NW flow potential over the next week or so

Also... check out the literal PV in Alaska. Wild for July. I'm gonna miss the prospect for NW flow events but I'll be trading it in for even more of a year-round severe weather climatology. I'm gonna be about half way between Nashville and Knoxville.

gfs_z500a_namer_fh0-180.gif

When you moving to TN? 

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