Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 (edited) Ok this is pretty crazy. A collapsing cloud or rain shower visible sets off a dust storm in western South Dakota, racing off toward the derecho. Edited May 12, 2022 by ClicheVortex2014 1 Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 (edited) Rear inflow jet is now so strong that it's causing range folding, and now there's a tornado warning for a part of the derecho, possibly signifying the beginning of an even worse stage. Awful Edited May 12, 2022 by ClicheVortex2014 Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 (edited) More discrete convection is quickly becoming severe warned in SD. In a favorable environment to become tornadic... increasingly so since the peak of the LLJ will come in the next few hours. Edited May 12, 2022 by ClicheVortex2014 Link to comment Share on other sites More sharing options...
Guest Posted May 12, 2022 Share Posted May 12, 2022 Sioux Falls live cams. If link works. https://www.keloland.com/weather/live-cameras/ Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 1 minute ago, SoDakFarmer said: Sioux Falls live cams. If link works. https://www.keloland.com/weather/live-cameras/ Best of luck to you... hope you escape the worst of it. Nothing you really can do except treat the derecho as a big ass tornado warning and take shelter Link to comment Share on other sites More sharing options...
cer5059 Posted May 12, 2022 Share Posted May 12, 2022 2 minutes ago, SoDakFarmer said: Sioux Falls live cams. If link works. https://www.keloland.com/weather/live-cameras/ Did I just see a power flash on the Great Bear Tubing Hill cam? Link to comment Share on other sites More sharing options...
Guest Posted May 12, 2022 Share Posted May 12, 2022 Just now, ClicheVortex2014 said: Best of luck to you... hope you escape the worst of it. Nothing you really can do except treat the derecho as a big ass tornado warning and take shelter I’m up 20 miles south of Aberdeen. Hoping to miss the major wind. Just need to dodge tornados. Link to comment Share on other sites More sharing options...
Guest Posted May 12, 2022 Share Posted May 12, 2022 Just now, cer5059 said: Did I just see a power flash on the Great Bear Tubing Hill cam? Yep. Lot of flashes on their live news until it went off air. Link to comment Share on other sites More sharing options...
cer5059 Posted May 12, 2022 Share Posted May 12, 2022 That Great Bear Tubing Hill camera was wild! Link to comment Share on other sites More sharing options...
snowlover2 Posted May 12, 2022 Share Posted May 12, 2022 20 minutes ago, ClicheVortex2014 said: It's only a 10% hatched risk for tornadoes, so technically a high-end enhanced risk. I had that thought earlier... there's a significant risk for tornadoes, but there's an even greater risk for high-end damaging winds. Which do you emphasize? A tornado watch doesn't emphasize the risk for this kind of damaging winds, and a PDS severe watch doesn't emphasize the risk for potentially strong tornadoes. I guess SPC/NWS felt the risk for high-end damaging winds was greater with the PDS watch area than the tornado watch area. Makes sense and i was thinking maybe that but just looks kinda weird. 1 Link to comment Share on other sites More sharing options...
cer5059 Posted May 12, 2022 Share Posted May 12, 2022 Here are some stills from that feed 2 Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 About 11 80-90 mph wind gusts reported so far, but there is one 107 mph wind gust. Not exactly something you see with your average derecho. 1 Link to comment Share on other sites More sharing options...
Guest Posted May 12, 2022 Share Posted May 12, 2022 Watertown cam on that link I posted should be next in line. Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 biggggggg yikes Mesoscale Discussion 0742 NWS Storm Prediction Center Norman OK 0523 PM CDT Thu May 12 2022 Areas affected...Central and Eastern South Dakota Concerning...Tornado Watch 209... Valid 122223Z - 130030Z The severe weather threat for Tornado Watch 209 continues. SUMMARY...The tornado threat is expected to quickly develop across parts of northeastern South Dakota over the next hour. The threat will spread northward with time and increase, especially in the northern and eastern parts of WW 209. DISCUSSION...The latest radar imagery from Aberdeen, South Dakota shows a severe line segment producing widespread wind damage located across southeastern South Dakota. More discrete cells are developing on the northwestern edge of the line about 50 miles from south to southwest of Aberdeen. The storms are ongoing in an extremely unstable environment with MLCAPE in the 4000 to 5000 J/kg range. In addition, the Aberdeen WSR-88D VWP has 0-6 km shear near 50 knots with 0-3 km storm relative helicity around 400 m2/s2. This along with a looping hodograph will be favorable for supercells and tornadoes over the next one to two hours. The tornado threat will likely increase due to a strengthening low-level jet as the storms move across northeastern South Dakota. A strong tornado will be possible with any supercell that can become dominant. The storms will move into southeastern North Dakota and into parts of western Minnesota over the next hour, where a new weather watch will be issued shortly. 1 Link to comment Share on other sites More sharing options...
ElectricStorm Posted May 12, 2022 Author Share Posted May 12, 2022 Multiple areas of rotation in here 1 Link to comment Share on other sites More sharing options...
Chinook Posted May 12, 2022 Share Posted May 12, 2022 I have seen very few of the storm reports show up on my GRLevel3 radar screen. Anybody else have this problem? Link to comment Share on other sites More sharing options...
Neoncyclone Posted May 12, 2022 Share Posted May 12, 2022 This looks like it's about to be a problem. Link to comment Share on other sites More sharing options...
Meteorologist ClicheVortex2014 Posted May 12, 2022 Meteorologist Share Posted May 12, 2022 We are now at 20 significant wind reports 1 Link to comment Share on other sites More sharing options...
Neoncyclone Posted May 12, 2022 Share Posted May 12, 2022 Now would be a good time to tune into that Watertown camera, it's coming into view now. Link to comment Share on other sites More sharing options...
Neoncyclone Posted May 12, 2022 Share Posted May 12, 2022 I've been through derechos, too many MCS's to count, i've never seen cloud motion so fast other than the condensation of a tornado. Watertown cam is insane Link to comment Share on other sites More sharing options...
ElectricStorm Posted May 12, 2022 Author Share Posted May 12, 2022 1 minute ago, Neoncyclone said: I've been through derechos, too many MCS's to count, i've never seen cloud motion so fast other than the condensation of a tornado. Watertown cam is insane Yeah I've been watching it. Crazy cloud motion for sure Link to comment Share on other sites More sharing options...
Neoncyclone Posted May 12, 2022 Share Posted May 12, 2022 Just now, OKwx_2001 said: Yeah I've been watching it. Crazy cloud motion for sure Beautiful shelf cloud Link to comment Share on other sites More sharing options...
ElectricStorm Posted May 12, 2022 Author Share Posted May 12, 2022 About to move into Watertown Link to comment Share on other sites More sharing options...
ElectricStorm Posted May 12, 2022 Author Share Posted May 12, 2022 The Watertown tor warning is confirmed. Can't see anything on the cam though with all the rain Link to comment Share on other sites More sharing options...
snowlover2 Posted May 12, 2022 Share Posted May 12, 2022 Quote Severe Weather Statement National Weather Service Aberdeen SD 557 PM CDT Thu May 12 2022 SDC029-037-051-057-122315- /O.CON.KABR.TO.W.0006.000000T0000Z-220512T2315Z/ Day SD-Hamlin SD-Grant SD-Codington SD- 557 PM CDT Thu May 12 2022 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR SOUTHEASTERN DAY...NORTHEASTERN HAMLIN...WEST CENTRAL GRANT AND CODINGTON COUNTIES... At 556 PM CDT, tornado producing storms were located along a line extending from Memorial Park Camping Site to near Watertown, moving north at 80 mph. HAZARD...Damaging tornado. SOURCE...Weather spotters confirmed tornado. At 552 PM CDT, damage was reported in Castlewood. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. These tornadic storms will be near... Rauville and Medicine Lake around 600 PM CDT. Florence, Dakota Sioux Casino and Grass Lake around 605 PM CDT. Other locations in the path of these tornadic storms include Bitter Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. This line of thunderstorms is capable of producing tornadoes and widespread significant wind damage. Do not wait to see or hear the tornado. For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4525 9743 4525 9698 4467 9700 4479 9735 TIME...MOT...LOC 2256Z 179DEG 71KT 4492 9726 4487 9710 TORNADO...OBSERVED MAX HAIL SIZE...<.75 IN Link to comment Share on other sites More sharing options...
.thumb.jpg.d854dd115fa9dfd0656f7d1835c449ce.jpg)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now