High Plains Drifter


disclaimer:  "The meteorological views/forecast thinking expressed are those solely of the author of this blog
and do not necessarily represent those of official National Weather Service forecast products,
therefore read and enjoy at your own risk and edification!"

November 13, 2008

More Photos of 10 November Johnson, KS tornado

Filed under: Nov 10, 2008,Photography,Storm Chasing — Mike U @ 1:31 pm

Here is another photo of the Johnson, KS tornado at its mature stage.  The image was processed using mainly Levels in Adobe Lightroom and further processed using layers in Paint Shop Pro.  I used Neat Image to clean some of the noise up since I shot this at 500 ISO on my Nikon D200.  (My Nikon D3 is what I am currently using only for ultra-wide angle landscape/stormscape images, which is why all the tornado images were shot using the D200 so I could zoom in more).

There are more images!  I have uploaded an album of 22 photos showing the life of the this rare western Kansas November tornado 

 

November 10, 2008

Chase Acct: November 10, 2008 [brief]

Filed under: Chase Accounts,Nov 10, 2008,Storm Chasing — Mike U @ 7:36 pm

Real brief.  I will write a detailed chase account later on.  I chased and photographed my first November tornado earlier this afternoon at around 3:30pm CST.  This tornado was on the ground for ~ 7 to 10 minutes northwest of Johnson, KS about 3 to 4 miles or so.  I photographed the tornado from Hwy 27 just a couple miles north of town.  Below are two photos.  The first is the supercell storm earlier on about 10 miles SSE of Manter, KS as it was entering Stanton County.  The 2nd photo shows the tornado in its mature, large stage.  It briefly took on a wedge shape appearance, as is shown.  The immediate inflow air into this storm was ~ 53 degrees temperature over ~ 47 degree dewpoint.  Incredible!! 

 

 

A November chase close to home?!?

I am really intrigued by the meteorological setup across the far southwest Kansas/western OK Panhandle/extreme northeast NM corridor for later this afternoon.  An intense, yet compact (important!) mid level potential vorticity (PV) anomaly will eject northeast out of New Mexico by midday and become centered across the area mentioned in the first sentence.  This setup has some similarities to the 26 October 2006 setup, although probably not as intense.  Nevertheless, there is the possibility for interesting low-topped, intense convection near the nose of the mid level vort max/PV anomaly where low level convergence/frontogenesis will be extremely favored.  A narrow corridor of 45 to 50°F dewpoint air at the surface may extend northwest as far as Guymon, OK or even points west of there, sneaking into an area with ~ -21°C temps at 500mb.  Since this isn’t all that far from Dodge, I will try to chase this setup and see what I can come up with.  Just the thought of possibly seeing a brief "cold core" setup tornado in November is enough for me to get out the door, however small that probability may be.  I look at the short-term RUC forecast and have visions of 26 October 2006 running in my mind.  This would be a low CAPE event, with forecast CAPE on the order of 300 to 500 J/kg in a narrow corridor, but that is enough convective instability given the degree of focused, intense ascent from this small system at the nose of the mid-level PV anomaly.  Below is a 9-hour RUC forecast:

 

May 10, 2007

Presidential Visit to Greensburg

Filed under: Editorial,May 4, 2007 Greensburg,Special Cases — Mike U @ 1:11 pm


President George W. Bush participates in a briefing Wednesday, May 9, 2007, at the Emergency Operations Center in
Greensburg, Kansas, during his visit to the tornado-ravaged area. White House photo by Eric Draper (caption and photo from whitehouse.gov) 
I am barely in this picture… that’s my head there at the very bottom-right portion of the photo. 


Wednesday was certainly another wild day for me (and hopefully the last one!).  The evening prior, I received a phone call from U.S. Senator Pat Roberts of KS expressing his congratulations on a job well-done to me and my colleagues at our office that fateful evening.  I was invited to take part in the Presidential visit to Greensburg — more specifically, on a short list of individuals to take part in a closed-door briefing at the makeshift operations control center just outside the courthouse in Greensburg.  We (4 of us including our MIC and WCM) left for Greensburg about 830am or so.  About halfway there, I received a phone call from Air Force One.  I believe Senator Roberts passed along my cell phone number.  The President offered his congratulations on a job well done to me and our office on getting the warnings out in a very timely and efficient manner.  Definitely an honor I’ll never forget!  Receiving a call from Air Force One on my personal cell phone… I still can’t really get over that one. 

Anyway, we arrived in Greensburg after waiting in a fairly long line along Highway 54 and met up with the Director of the National Weather Service who was along with the Central Region Director of the NWS.  It was great to meet these important people of our NWS… especially General D.L. Johnson.  Something completely unrelated… that I just have to mention…  Rock Chalk Jayhawk Go KU!  The General is also a KU alumnus along with me… so we represented the Crimson and Blue well I think :)

After standing around for awhile in the rain, I had to get ready to go into the meeting room where the President was going to conduct a briefing.  After waiting for upwards of an hour it seemed like, the President made it in to the room and we all introduced ourselves and shook the President’s hand.. once again, the President offered his congrats on a job well-done.  Towards the end of the briefing, I believe it was the FEMA Director that wanted to make a special acknowledgement to myself and our staff at NWS-DDC for our performance.  I spoke just briefly before the group, and I just wanted to acknowledge that it was really a well-coordinated effort by the six people we had working that evening in our office that made the flow of information in and out of our office so efficient.  Before we dismissed, Senator Roberts found me and made sure I got in a photo with him and the President. 

After that was all over I met back up with Scott and Larry from our office and we toured the damage so I could see it for myself.  What really impressed me the most was all the brick building damage.  Many of the brick buildings along Main Street were 3 to 4 bricks thick with no real "point of entry" for the wind.  The High School destruction was also unbelievable… an extremely well-built structure from 1937… that was really no match for this tornado. 

Anyway, I was just honored to have been able to represent the National Weather Service yesterday, and it is most obviously a day I won’t forget!

May 8, 2007

An integrated warning system is what saves lives

Filed under: Editorial,May 4, 2007 Greensburg,Special Cases — Mike U @ 10:35 am

I have certainly received a lot of compliments and kudos about how "I" saved lives in Greensburg…  I really appreciate the response and e-mails I have received.  The interview I had with Diane Sawyer on GMA seemed to suggest that it was primarily me that saved lives in Greensburg — and that’s just not the case.  At least that’s how I feel about it.  I just want to make it clear to everyone that it was not just me.  It is the integrated warning system that saves lives… not one and only one person’s sole individual effort.  As the National Weather Service radar and warning operator, my job that night was the most "visible" part of this integrated warning system…thus all the compliments and wonderful feedback I have received (Which I thank you again).  It is our job in the National Weather Service as meteorologists to issue timely warnings and statements when severe weather threatens people.  We really did nothing out of the ordinary in terms of doing our jobs the way we are trained to do it that night.  While I was the meteorologist working the radar and issuing statements for just that particular storm, other meteorologists in our office were making calls and receiving calls concerning reports of what was actually going on on the ground.  

One meteorologist from our office in particular called Kiowa County dispatch at least two times, and I think they called us once concerning the threat for Greensburg specifically.  The very first time they called… about 30 minutes before the tornado hit… we told them.. at the time we did not think that Greensburg would take a direct hit given the latest track of the storm… however we did express some uncertainty in what we told them.  About 10 minutes later, that particular meteorologist called Kiowa County back as it appeared that the Tornado Vortex Signature (TVS) on radar was turning more to the left… in line with Greensburg.  This meteorologist told them that after we analyzed the latest extrapolation of the TVS.  I think we gave them one more call about 10 minutes prior to it hitting that we had high-confidence they were going to take at least a partial hit… if not a direct one. 

Regarding the Tornado Emergency wording in one of our statements.  As the radar operator for that storm, it was largely my decision… in other words… I wanted to use this wording in the statement text… and I ran this by our Lead Forecaster to see if he agreed, which he did, and we ran with it.  We did monitor one of the Wichita TV stations in our office, as we usually do so that we can verify the dissemination of the warnings (at least from the TV media standpoint), and at the one TV station we were monitoring did indeed pick up on our "Tornado Emergency" text with the extreme wording to stress the severity of the situation.  This TV meteorologist did a fantastic job conveying this threat from our statement… The upshot of this blog post is that it wasn’t just me.  Many of the storm chasers were also in on the integrated warning system, too, as they were relaying real-time verification of the large, wedge tornado to their particular TV stations as well as reports coming into our office. 

Many people were involved on Friday May 4th that saved lives in Greensburg, Kansas and surrounding areas that took direct hits. 

 

May 6, 2007

Good Morning America tomorrow, May 7th

Filed under: May 4, 2007 Greensburg,Special Cases — Mike U @ 9:44 pm

I will be interviewed by Diane Sawyer on ABC’s Good Morning America tomorrow morning.  I am not sure when the segment will air, it will be a taped interview before the show comes on.  Anyway, the topic will be very similar to my blog post — as my account from that night has generated a lot of interest and compliments..  In that respect, thanks so much.  I used a lot of more meteorological terms in my blog post, but in the interview with GMA, it will be more generalized and basic for the average lay person. 

May 5, 2007

A “career storm” — Greensburg, KS

Filed under: Editorial,May 4, 2007 Greensburg,Special Cases — Mike U @ 3:50 am

A "career" storm… from a radar operator standpoint.  It’s 3:00am, I’m still up, but should be going to bed, but I’m just too darned keyed up.  Where do I begin?  The storm of the day erupted at the southernmost end of a cluster of pseudo-organized right and left members to its immediate north.  But the far southern storm that erupted out of nowhere just had that shape.  Not 2 minutes after I issued SVR again for eastern Clark Co for that storm I issued TOR… I didn’t have to wait for strong 0.5 convergence/couplet, whatever.  It took it awhile to get going… about Protection or so… but when it did… it went on to produce a fantastic velocity signature 0.5/0.9 slices north of Protection.  The couplet was tracking more northeast… missing Coldwater to the northwest and approaching highway 183 about 7 SSW of Greensburg.  Velocity rotational couplets were topping out at around 150 knots total shear over about a 1-2 mile radius.  I was just thanking the lord that it appeared to be taking a course to miss Greensburg to the southeast.  The next couple slices, though, frightened me.  The damn couplet was bending to the left…and the next scan was even more to the left… and I didn’t even really give it thought…  the "…tornado emergency for Greensburg…" in my next SVS… it was like instinct – just did it.  Those few minutes after watching one of the most incredible velocity couplets go directly over one of your good sized communities in your CWA… I was just too anxious.  Then the message was sent out… a plea from Greensburg dispatch… "Ford County communications this is Greensburg… we just took a direct hit…".. that came no more than about 3 or 4 minutes after the couplet passed over.  I then immediately sent out another SVS indicating that Greensburg likely took a direct hit.

Thereafter… the steady-state cycling of tornado cyclone…tornado…left turn…. next cycle… tornado, left (north) turn…. next cycle… it was routine… the most steady-state cyclic significant tornadic supercell I had ever seen, let alone work the warnings on radar.  I don’t think that there was 1 minute from the time of the first tornado near Protection….to the time it exited our CWA and headed into the Ellinwood area…that there wasn’t a significant tornado tearing $h1t up….over that 100 mile stretch.  100 miles of steady-state tornado production… I’m not sure how many members there were in this wedge-family.  Just to see hours on end of velocity signatures like this is something I’ll never forget.  Inbounds of 120 knots and higher at times… inbounds only!  Several times throughout the life!  I think the highest we saw was about 150 knots that actually looked like legit data… as in properly aliased. 

Greensburg is pretty much gone.  Especially the western 1/2 of town from what I can surmise from the media reports and interviews.  How many of you are familiar with the Largest Hand-dug Well?  There’s a tall tower that stands proud above that well.  No more.  Completely gone, at least from one of the accounts I heard.  The Big Well is located in the heart of town… and the reports are that downtown and the western portions of town suffered the worst of the damage.  One account I heard of was that when one of the residents looked out their window… they couldn’t see the tower anymore.  They didn’t know where it went.

One of my favorite storm photos of the year so far included Greensburg in the shot.  This was taken about 5 miles west of Greensburg back on March 29th.

So it’s 3am, and at the surface here in DDC it is 72/65F with the short-fuse composite showing 3000 J/kg of CAPE… at 08z!  Winds are howling out of the south southeast… it’s going to be another long day today…

Mike U

April 13, 2007

Western Kansas Spring Snowstorm April 13 [8]

Filed under: Apr 13, 2007,General Weather & Forecasting,Special Cases — Mike U @ 10:55 am

Back and Forth…   Really interesting what’s going on in Dodge City right now… we have gone back to a "chunky" rain.  The heavier echoes on radar are very large aggregate snowflakes which take longer to melt…thus we see it at the surface as snow… but smaller flakes do not take as much time to melt…thus we see rain.  Talk about borderline.  Winter Precipitation microphysics at its finest. 

February 25, 2007

Central Plains Winter Storm Feb 23-24 [9]

Filed under: Feb 23-24, 2007,General Weather & Forecasting — Mike U @ 10:59 am

. . . Peak wind gust reports across eastern Colorado and western Kansas on the 24th . . .

Location Peak
Gust (mph)
Report
Source
Cheyenne Wells, CO 82 Storm spotter measured
Hays, KS 75 AWOS
La Junta, CO 74 ASOS
Elkhart, KS 72 AMOS
Hill City, KS 69 ASOS
Springfield, CO 69 ASOS
Akron, CO 68 ASOS
Limon, CO 68 ASOS
Scott City, KS 68 AWOS
Hugoton, KS 67 AWOS
Ulysses, KS 67 AWOS
Johnson, KS 66 AWOS
Garden City, KS 66* ASOS
Dodge City, KS 64 ASOS
Sheridan Lake, CO 64 Storm spotter measured
Lamar, CO 64 ASOS
Hoxie, KS 63 Storm spotter measured
Liberal, KS 63 AWOS
Leoti, KS 62 Mesonet
Burlington, CO 62 ASOS

* Garden City observations were manually taken for 3 hours during the
wind storm and gusts were not reported, so peak wind could have been
higher than 66 mph.

. . . Blizzard criteria met at automated weather observation stations over the central High Plains . . .

Location
of Automated Surface Observation
Duration
of Blizzard (Hrs)
Time
(Zulu)
Limon, CO 9.5 1020-1955
Akron, CO 7 1233-1925
Ainsworth, NE 7 1711-0011
Thedford, NE 6 1411-2011
North Platte, NE 5.75 1418-2004
Goodland, KS 4.25 1657-2116
Lamar, CO 3.25 1527-1841
La Junta, CO 3 1446-1753
Burlington, CO 3 1253-155


Note of interest:
  Immediately west of the low in western
central Kansas, blizzard conditions were reported from Hays to Rush
Center to Larned during the late afternoon hours, however, the band of
snow was rather narrow, and conditions lasted less than 3 hours, not
officially meeting blizzard criteria, but came close in some areas.

Addendum:  I was wrong, I found out that this corridor from Hays to Rush Center to Larned did indeed meet blizzard criteria after looking through our logs at work.  Several reports of 3 to 4 hours of less than 1/4 mile visibility in snow and blowing snow to go along with the 50+ mph wind gusts. 

February 24, 2007

Central Plains Winter Storm Feb 23-24 [8]

Filed under: Feb 23-24, 2007,General Weather & Forecasting — Mike U @ 4:06 pm

Tornado damage southwest of Dodge City on the 23rd.  I came in to work this morning to check my e-mail and the latest on the storm since my cable/internet are out at home (Ugh!)… then after receiving a report of damage from last night’s tornado in southwestern Ford County, our WCM came in and I went on a damage survey with the WCM at our office, and we found a decent track through southwestern and west-central Ford County…with a smaller track to the southwest of it.  Damage was not major with the primary indications of tornado being flipped center pivot irrigation systems.  This storm was extremely rare being in February and at night as well.  Dodge City was in the cross-hairs of this storm between 10:45 and 11:00pm last night but the storm circulation diminished quickly and lost supercell characteristics.  While out on the survey, the northwest winds were incredible…

55 to 65 mph wind gusts behind the low!  Some of the surface obs in western KS and eastern CO are awesome today.  Many 33040G55KT surface wind observations (northwest at 40 knots gusting to 55 knots).  Even here in Dodge City we have peaked at 55 knots at 3:00pm, which caused commercial power interruption at the office.  We’re missing out on the blizzard conditions though as it’s not snowing in Dodge City.  Farther northwest in western Nebraska, far western Kansas, eastern Colorado… blizzard conditions are incredible with the winds as strong as they are.

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