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Plains May 27-30 severe weather threat?


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Was at work and saw a brief burst of nickle sized hail and several minutes of 40-50MPH gusts, along with intense cloud to ground lightning. I'm honestly shocked no severe reports came in from CLE's CWA, as there were some nice storms that came through.

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Was at work and saw a brief burst of nickle sized hail and several minutes of 40-50MPH gusts, along with intense cloud to ground lightning. I'm honestly shocked no severe reports came in from CLE's CWA, as there were some nice storms that came through.

What's the spotter network like in CLE?

Maybe there weren't any spotters in the locations where the storms hit.

Per the radar loop the brunt of the storms were along the lakeshore into Cleveland proper and the eastern suburbs basically missing the southern suburbs

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What's the spotter network like in CLE?

Maybe there weren't any spotters in the locations where the storms hit.

Per the radar loop the brunt of the storms were along the lakeshore into Cleveland proper and the eastern suburbs basically missing the southern suburbs

The southern suburbs did get brushed, most of Cuyahoga County is highly populated and got hit with what appeared to be a bowing line segment, although I was watching that on my crappy 2 by 2" cell phone screen at work. I believe there are hundreds of spotters in Cuyahoga County.

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The southern suburbs did get brushed, most of Cuyahoga County is highly populated and got hit with what appeared to be a bowing line segment, although I was watching that on my crappy 2 by 2" cell phone screen at work. I believe there are hundreds of spotters in Cuyahoga County.

Yeah, the reports will probably show up by tomorrow. Maybe they're still gathering all the reports.

If there are hundreds of spotters in Cuyahoga county I doubt none of them reported.

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If I were lucky enough to chase tomorrow I think I'd target the area in central Nebraska near or just north of Grand Island. Further north the low-levels are pretty anemic IMO. I'd rather play in areas that have at least 30-40kts at 925mb, which in this case is further south. With the surface low in Nebraska there will likely be a nice dryline bulge down there as well. With the 500mb jet cutting in just to the north of this area, the H5 winds stay slightly more veered in this region as well. Anything that can really dig in and turn right in this environment should be huge. At least we won't have to worry as much about the cap tomorrow.

EDIT: The GFS shows much better low-level winds extending further north into the Dakotas. What a ridiculous difference between the NAM and GFS for an event less than 24hrs away.

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If I were lucky enough to chase tomorrow I think I'd target the area in central Nebraska near or just north of Grand Island. Further north the low-levels are pretty anemic IMO. I'd rather play in areas that have at least 30-40kts at 925mb, which in this case is further south. With the surface low in Nebraska there will likely be a nice dryline bulge down there as well. With the 500mb jet cutting in just to the north of this area, the H5 winds stay slightly more veered in this region as well. Anything that can really dig in and turn right in this environment should be huge. At least we won't have to worry as much about the cap tomorrow.

Pending budget review, i may head out tomorrow, not too far from me

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If I were lucky enough to chase tomorrow I think I'd target the area in central Nebraska near or just north of Grand Island. Further north the low-levels are pretty anemic IMO. I'd rather play in areas that have at least 30-40kts at 925mb, which in this case is further south. With the surface low in Nebraska there will likely be a nice dryline bulge down there as well. With the 500mb jet cutting in just to the north of this area, the H5 winds stay slightly more veered in this region as well. Anything that can really dig in and turn right in this environment should be huge. At least we won't have to worry as much about the cap tomorrow.

EDIT: The GFS shows much better low-level winds extending further north into the Dakotas. What a ridiculous difference between the NAM and GFS for an event less than 24hrs away.

I liked the YKN-OFK-ONL triangle but will have to see how things look in the morning.

possibly a tad stronger cap the further south you go which could mean less storms.

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Man, the GFS is making my head spin. You can say something good about many targets from the Dakotas down into Oklahoma. It almost makes me prefer the KS/OK border region. Moderate instability, strong and back low-level wind field, much more veered H5 winds above 50kts, and a potent dryline.

The KS/OK border south of Medicine Lodge late tomorrow.

GFS_3_2011053000_F24_37.0000N_98.5000W.png

GFS_3_2011053000_F24_37.0000N_98.5000W_HODO_SM.png

I think I'd still take the middle road and target Nebraska at this point, but I'd be seriously thinking about punching south into Kansas if morning trends pointed in that direction.

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Man, the GFS is making my head spin. You can say something good about many targets from the Dakotas down into Oklahoma. It almost makes me prefer the KS/OK border region. Moderate instability, strong and back low-level wind field, much more veered H5 winds above 50kts, and a potent dryline.

I think I'd still take the middle road and target Nebraska at this point, but I'd be seriously thinking about punching south into Kansas if morning trends pointed in that direction.

Ya the NAM is def trying to break out convection in that area by 0z tomorrow evening even though nothing is showing up on the precip plots. You have good signals of ascent on both the H7 RH and UVV's plot and holes of weaker H7 temps up and down the dryline from southern KS down into OK and the eastern TX PH. But it looks like the further south you go, the better chance at low-level moisture mixing out some due to the serious sfc heating that is going to take place down there. It's showing temps in the mid-upper 90's almost up to the KS/NE border, ouch.

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Ya the NAM is def trying to break out convection in that area by 0z tomorrow evening even though nothing is showing up on the precip plots. You have good signals of ascent on both the H7 RH and UVV's plot and holes of weaker H7 temps up and down the dryline from southern KS down into OK and the eastern TX PH. But it looks like the further south you go, the better chance at low-level moisture mixing out some due to the serious sfc heating that is going to take place down there. It's showing temps in the mid-upper 90's almost up to the KS/NE border, ouch.

Yeah the drought down south won't help those mixing issues. The safest play would definitely be in Nebraska. If something does manage to fire in central/southern Kansas it could be nice. Sure wish I was crashing in Grand Island tonight.

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SREF_prob_combined_sigtor__f027.gif

SREF likes a more northern target, which doesn't really make sense. Hard to pin down a target, but I'd guess the Sioux Falls area, H5 and 850s are decent, but hard to make heads or tails out of tomorrow with the potential for things to get linear quickly.

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DAY 1 CONVECTIVE OUTLOOK

NWS STORM PREDICTION CENTER NORMAN OK

1258 AM CDT MON MAY 30 2011

VALID 301200Z - 311200Z

..THERE IS A MDT RISK OF SVR TSTMS FROM NERN NEB INTO ERN SD

SERN

ND...WRN MN...AND FAR NWRN IA...

...THERE IS A SLGT RISK OF SVR TSTMS FROM FAR NRN OK NWD INTO THE

DAKOTAS AND MN...

..SYNOPSIS

A HIGHLY AMPLIFIED PATTERN WILL PERSIST TODAY WITH A POTENT UPPER

TROUGH EJECTING NEWD OUT OF THE ROCKIES AND INTO THE NRN PLAINS. AT

THE SURFACE...LOW PRESSURE WILL BE CENTERED OVER CNTRL NEB BY

AFTERNOON...WITH A LOW PRESSURE TROUGH STRETCHING FROM SERN ND INTO

THE SRN HIGH PLAINS. A DRYLINE WILL EXTEND SWD FROM THE LOW...WHILE

A COLD FRONT RAPIDLY SURGES EWD ACROSS THE NRN HIGH PLAINS DURING

THE LATE AFTERNOON. VERY STRONG FORCING NEAR THE LOW...AND WITH THE

SURGING COLD FRONT...WILL BE THE PRIMARY FOCI FOR SEVERE STORMS

TODAY.

..CNTRL NEB/SD EWD INTO WRN MN AND IA

STRONG SLY FLOW WILL PERSIST ACROSS THE PLAINS STATES WITH A STRONG

CAP IN PLACE FOR MUCH OF THE DAY. HOWEVER...CONDITIONS WILL RAPIDLY

CHANGE BY AFTERNOON AS HEATING AND LIFT ERASE THE CAP AND RESULT IN

RAPID FORMATION OF SEVERE THUNDERSTORMS OVER PORTIONS OF CNTRL/NRN

NEB. VERY STRONG MERIDIONAL WIND PROFILES WILL BE IN PLACE...WITH

FAVORABLE LOW LEVEL HODOGRAPHS FOR SUPERCELLS. WITH STRONG

INSTABILITY AND SUFFICIENT MOISTURE ALSO JUXTAPOSED...SUPERCELLS

CAPABLE OF VERY LARGE HAIL AND TORNADOES...PERHAPS ONE OR TWO

STRONG...WILL BE LIKELY. STORMS WILL MOVE QUICKLY NEWD AND WILL

AFFECT SD AND EVENTUALLY SERN ND AND WRN MN.

STORMS ARE EXPECTED TO BECOME MORE LINEAR WITH TIME FOR TWO REASONS.

FIRST...UPPER LEVEL HODOGRAPHS DEPICT WEAK AND BACKED STORM RELATIVE

FLOW...WHICH MAY EVENTUALLY RESULT IN PRECIPITATION FALLING BACK

INTO THE UPDRAFT. SECOND...THE COLD FRONT WILL RAPIDLY MOVE EWD.

ONCE THIS OCCURS...PARTICULARLY DAMAGING STRAIGHTLINE WINDS WILL BE

LIKELY...WITH POSSIBLE EMBEDDED CIRCULATIONS WITHIN THE LINE IN QLCS

FASHION. GIVEN CAPPING TO THE EAST...AND MERIDIONAL FLOW REGIME...A

RELATIVELY NARROW ZONE OF SEVERE IS LIKELY...AND IT MAY BE DIFFICULT

TO DETERMINE EXACTLY WHERE THE TRANSITION FROM SUPERCELLS/TORNADOES

TO QLCS OCCURS.

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i'm gonna sit off the 1-29 SD/ND border should see init around 4 pm hopefully low clouds don't keep the warm front too far south. Should be a 1-2 hours stretch of tor-potential then things will get messy. LI"s really argue for things exploding so we could go linear right away, we'll see.... I think we get a torn or 2 in the first hour or so. Hopefully winds really back and strengthen throughout the afternoon to up the SRH.

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i'm gonna sit off the 1-29 SD/ND border should see init around 4 pm hopefully low clouds don't keep the warm front too far south. Should be a 1-2 hours stretch of tor-potential then things will get messy. LI"s really argue for things exploding so we could go linear right away, we'll see.... I think we get a torn or 2 in the first hour or so. Hopefully winds really back and strengthen throughout the afternoon to up the SRH.

Seems like a good area. I think the best shot at anything sustained discrete tomorrow will be a good distance ahead of the boundary in the warm sector, perhaps near the warm front.

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Preliminary plan is to head south out of Grand Forks to Wahpeton, ND where numerous road options exist. I can grab a bite at the McDonalds and get some data on the wifi as budget forces me to chase on the cheap. The surface warm front can be played here but there is also easy access to the developing squall line south and west if the warm front is a bust. In house WRF models are a touch weaker with the cap and suggest the possibility of discrete supercell development along or near the warm front by 21z.

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Video of some of the damage in Battle Creek, also seems like a plug for a cleanup company also... That being said here is the video of some of the damage.

Matching up the Sunshine Auto Sales, would put this damage location on the Southwestern part of the City along M-96.

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Severe weather threat right here around western and central NE is gouing to be active today. I pretty much expect SPC to back that slight risk up farther W where the latest guidance as well as obs suggest the triple pt/warm sector will be backed up much farther W than earlier progged. Going to be an active day.

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