Damaging Tornadoes Slam Plains

By: Shaun Tanner , 6:50 AM GMT on April 15, 2012

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A devastating string of severe thunderstorms and tornadoes tracked through Texas, Oklahoma, Kansas, and Nebraska on Saturday. This severe weather outbreak was remarkable in its duration as supercell thunderstorms began to pop up in western Kansas late Saturday morning, and the dry line that was supposed to represent the end of the severe weather threat was only halfway through Kansas, Oklahoma, and Texas by 1:00 AM Central Time Sunday. The moisture difference on either side of this dry line was remarkable as well, with dew points in the upper 60's to the east, and a very dry 20's to the west.


SPC Storm Reports from Saturday

The SPC storm reports show the track of these storms, with Kansas being the hardest hit. Early in the afternoon, most of the supercell thunderstorms were consistently producing weak tornadoes that skipped across western and central Kansas. As the low-level jet stream kicked in late in the afternoon and into the evening, the thunderstorms strengthened considerably. Probably the most remarkable supercell thunderstorm began in western Oklahoma near Woodward as a stunning multi-vortex tornado. The tornado actually was several tornadoes that danced into southern Kansas and eventually threatened Wichita. The tornado passed just south and east of the city, producing an 84 mph wind gust at the Wichita Airport. It also did extensive damage at the airport. In addition, the Oaklawn area of Wichita was declared a disaster area very soon after the tornado passed. The Sedgwick County commissioner declared the county a disaster area. This wedge tornado eventually moved along the Kansas Turnpike northeast of Wichita before finally dissipating.


Figure 1. Double tornadoes in Oklahoma close to the Kansas border. Image credit: news9.com


Figure 2. This tornado sparked a fire in Oklahoma as it passed through the area northeast of Woodward. Image credit: news9.com

The deadliest tornado of the outbreak struck Woodward, OK early Sunday morning, as the main squall line moved through western Oklahoma. This tornado was very large and particularly dangerous since it occurred at night when most residents assumed the threat had ended. There were multiple reports of not hearing the city's siren, so it is entirely possible that the siren was either struck by lightning or hit by the tornado itself. At least five deaths have been confirmed in the Woodward area from this tornado. Probably the scariest video of a tornado I have ever seen was taken of this Woodward tornado as it moved into town. Note you can see the scale of the tornado as between power flashes.


Video 1. Storm chaser video of one of Saturday's impressive tornadoes near Salina, Kansas.


Figure 3. Radar reflectivity image of the tornado that hit the south side of Wichita, Kansas, causing damage at the Wichita airport.

Perhaps the most telling feature of this severe weather outbreak was its repetitive nature. Salina, KS was tornado warned three times by three separate severe thunderstorms. Similarly, areas from Medicine Lodge to Kingman, Kansas were warned for two separate thunderstorms, while Woodward itself was warned very early in the day before a different tornado moved through the city late in the night.

Last night's storms have weakened, but a new round of severe weather is expected Sunday afternoon over portions of Wisconsin, Minnesota, and Iowa. NOAA's Storm Prediction Center has put the region under their second highest level of alert, a "Moderate Risk."

Shaun Tanner

Thunderstorm Wind Damage (dhennem)
Straight line winds from a thunderstorm this evening blew several semi tractor/trailers over on Interstate 29 in Fremont county, Iowa.
Thunderstorm Wind Damage
Freak Hail Storm Texas Panhandle (Randy7628)
Freak Hail Storm Texas Panhandle
Night tornado (Andrewbre)
Night tornado in Manchester,OK
Night tornado
Clouds II (amo1379)
Clouds II

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Quoting yqt1001:
The system has 3 days to detach from those 2 fronts, which is very feasible. Some of the storms in 2011 managed to detach from a front within 12 hours of being invested.

Any idea on if it's cold core or shallow warm core yet?


SST's won't support a warm core/ subtropical storm
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This could be a summer where the MJO stays in our neck of the woods. Yes we probably wont have the number that we had the last 2 years but the ones that do form could be take aim at C America and the Gulf Coast region.
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Quoting Tropicsweatherpr:
Today's updated anomalies graphic.



Big increase it appears across the eastern Pacific. Also look what it's doing to the MJO. Folks this could be bad for the US as this could be the year for big Gulf & Caribbean hurricanes.

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Today's updated anomalies graphic.

Member Since: April 29, 2009 Posts: 75 Comments: 13995
6th Person Died in Woodward, Ok tornado
Member Since: August 19, 2006 Posts: 13 Comments: 14418
Damm we maybe in El-nino by the end of May beginning of June.
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Quoting CybrTeddy:




Thanks!
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CFSv2 (SOI NOW AT -6!)

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Quoting yqt1001:
The system has 3 days to detach from those 2 fronts, which is very feasible. Some of the storms in 2011 managed to detach from a front within 12 hours of being invested.

Any idea on if it's cold core or shallow warm core yet?


Member Since: July 8, 2005 Posts: 259 Comments: 23565
Quoting belizeit:
Whats that NE of Brazil it does not look itz related but more like a Tropical Wave to me . But then i am not aquainted in what it uses to form a wave.


Is part of ITCZ according to them.

THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE E TROPICAL
ATLC NEAR 8N13W TO 3N21W WHERE THE ITCZ AXIS CONTINUES S OF THE
EQUATOR NEAR 27W. CLUSTERS OF SCATTERED MODERATE/STRONG
CONVECTION ARE FROM 4N TO S OF THE EQUATOR E OF 20W TO ACROSS
THE PRIME MERIDIAN AND FROM 10N TO THE EQUATOR BETWEEN 47W-55W.
SCATTERED MODERATE/ISOLATED STRONG CONVECTION IS WITHIN 60 NM OF
LINE FROM 4N27W TO 2N31W.
Member Since: April 29, 2009 Posts: 75 Comments: 13995
Looking more and more that El-Nino will be here this summer. Looking like we maybe sitting at +1.5 by October.

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The system has 3 days to detach from those 2 fronts, which is very feasible. Some of the storms in 2011 managed to detach from a front within 12 hours of being invested.

Any idea on if it's cold core or shallow warm core yet?
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Quoting StormTracker2K:


I agree the southward movement should help this become STS Alberto. Well see!


We certainty will. The phase diagrams indicate that this will become shallow-warm core on it's eastward track. While climatology is against it, it is entire possible our first named storm of the year will form tomorrow or Wednesday.
Member Since: July 8, 2005 Posts: 259 Comments: 23565
TORNADO WARNING CORPUS CHRISTI TX - KCRP 727 AM CDT MON APR 16 2012
FLASH FLOOD WARNING CORPUS CHRISTI TX - KCRP 722 AM CDT MON APR 16 2012
http://kamala.cod.edu/svr/

727 AM CDT MON APR 16 2012

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
SOUTHWESTERN ARANSAS COUNTY IN SOUTH CENTRAL TEXAS...
SOUTHEASTERN SAN PATRICIO COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 800 AM CDT

* AT 724 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
INGLESIDE...OR 7 MILES NORTHEAST OF PORTLAND...SLOWLY MOVING
NORTHEAST AT 5 MPH.


* LOCATIONS IMPACTED INCLUDE...
ARANSAS PASS...
PALM HARBOR...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
HALF DOLLAR SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
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Whats that NE of Brazil it does not look itz related but more like a Tropical Wave to me . But then i am not aquainted in what it uses to form a wave.
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Quoting CybrTeddy:


It appears it's trying to detach, and will probably do so later this week as it moves southward towards Bermuda. This is very similar to Tropical Storm Ana's development in 2003, except this system is moving in the opposite direction.


I agree the southward movement should help this become STS Alberto. Well see!
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Quoting StormTracker2K:


There's two big cold fronts attached though.


It appears it's trying to detach, and will probably do so later this week as it moves southward towards Bermuda. This is very similar to Tropical Storm Ana's development in 2003, except this system is moving in the opposite direction.
Member Since: July 8, 2005 Posts: 259 Comments: 23565
Quoting CybrTeddy:
Here it comes.


There's two big cold fronts attached though.
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The front which dropped a ton of rain on Texas last night dropped a ton of snow on us overnight. I was completely unprepared for the snow day that was coming.

Our average low isn't even below freezing anymore.

Oh well, I only have to go to school 3 days this week! :D
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Quoting TropicalAnalystwx13:
Exactly one year ago, the final day of one of the worst tornado outbreaks in United States history would soon begin. A high risk, the first for 2011, would be issued for northeastern South Carolina, eastern North Carolina, and southeastern Virginia. A squall line rapidly formed in the central portion of the state and moved eastward, gradually transitioning into supercells. At 3:15 p.m. EDT, a tornado emergency was issued for the city of Raleigh as an upper-end EF3 moved through.

The cities of Fayetteville, Jacksonville, Goldsboro, and Wilson would all be hit by an EF2 or higher tornado.

April 14-16, 2011 was the deadliest outbreak since the Super Tuesday outbreak of 2008, but it would soon be surpassed not even two weeks later by 2011's Super Outbreak. If only we had knew what was about to happen...



I actually was on the road to Charlotte that day..went through some of the worst storms I have ever seen..my radio in the car constantly went off with Emergency warnings..people are still rebuilding in Bladen County where three people died that day
Member Since: August 19, 2006 Posts: 13 Comments: 14418
Here it comes.
Member Since: July 8, 2005 Posts: 259 Comments: 23565
Thanks Shaun!

Great and timely update.
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Quoting nrtiwlnvragn:
...STORM WARNING...
.LOW 33N48W 1007 MB MOVING NW 10 KT. WITHIN 480 NM N AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT. ELSEWHERE WITHIN
540 NM N SEMCIRCLE WINDS TO 25 KT. SEAS 8 TO 12 FT.
.06 HOUR FORECAST LOW 34N49W 1004 MB. WITHIN 300 NM N AND NW
QUADRANTS WINDS 35 TO 50 KT. SEAS 14 TO 20 FT.
.24 HOUR FORECAST LOW 35N53W 1000 MB. WITHIN 300 NM NW
SEMICIRCLE WINDS 35 TO 45 KT. SEAS 14 TO 22 FT. ELSEWHERE FROM
31N TO 42N BETWEEN 40W AND 59W WINDS 25 TO 35 KT. SEAS 8 TO 16
FT.
.48 HOUR FORECAST LOW 34N58W 1005 MB. FROM 31N TO 39N BETWEEN
40W AND 64W WINDS 20 TO 30 KT. SEAS 10 TO 18 FT.



Link




Separate from that front Bert!!
Member Since: June 17, 2011 Posts: 11 Comments: 6461
...STORM WARNING...
.LOW 33N48W 1007 MB MOVING NW 10 KT. WITHIN 480 NM N AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT. ELSEWHERE WITHIN
540 NM N SEMCIRCLE WINDS TO 25 KT. SEAS 8 TO 12 FT.
.06 HOUR FORECAST LOW 34N49W 1004 MB. WITHIN 300 NM N AND NW
QUADRANTS WINDS 35 TO 50 KT. SEAS 14 TO 20 FT.
.24 HOUR FORECAST LOW 35N53W 1000 MB. WITHIN 300 NM NW
SEMICIRCLE WINDS 35 TO 45 KT. SEAS 14 TO 22 FT. ELSEWHERE FROM
31N TO 42N BETWEEN 40W AND 59W WINDS 25 TO 35 KT. SEAS 8 TO 16
FT.
.48 HOUR FORECAST LOW 34N58W 1005 MB. FROM 31N TO 39N BETWEEN
40W AND 64W WINDS 20 TO 30 KT. SEAS 10 TO 18 FT.



Link
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708 AM CDT MON APR 16 2012

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN MCMULLEN COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 745 AM CDT

* AT 703 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER
SOUTHWESTERN MCMULLEN COUNTY...OR 21 MILES SOUTHWEST OF TILDEN...
AND MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
RURAL CENTRAL MCMULLEN COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING.
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1/2 inch so far in West houston - with more on the way!
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Quoting TropicalAnalystwx13:
Exactly one year ago, the final day of one of the worst tornado outbreaks in United States history would soon begin. A high risk, the first for 2011, would be issued for northeastern South Carolina, eastern North Carolina, and southeastern Virginia. A squall line rapidly formed in the central portion of the state and moved eastward, gradually transitioning into supercells. At 3:15 p.m. EDT, a tornado emergency was issued for the city of Raleigh as an upper-end EF3 moved through.

The cities of Fayetteville, Jacksonville, Goldsboro, and Wilson would all be hit by an EF2 or higher tornado.

April 14-16, 2011 was the deadliest outbreak since the Super Tuesday outbreak of 2008, but it would soon be surpassed not even two weeks later by 2011's Super Outbreak. If only we had knew what was about to happen...



I'm surprised none were rated higher than EF-3. Any thoughs on the models for this weekend as it looks active for the coastal SE US?
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Exactly one year ago, the final day of one of the worst tornado outbreaks in United States history would soon begin. A high risk, the first for 2011, would be issued for northeastern South Carolina, eastern North Carolina, and southeastern Virginia. A squall line rapidly formed in the central portion of the state and moved eastward, gradually transitioning into supercells. At 3:15 p.m. EDT, a tornado emergency was issued for the city of Raleigh as an upper-end EF3 moved through.

The cities of Fayetteville, Jacksonville, Goldsboro, and Wilson would all be hit by an EF2 or higher tornado.

April 14-16, 2011 was the deadliest outbreak since the Super Tuesday outbreak of 2008, but it would soon be surpassed not even two weeks later by 2011's Super Outbreak. If only we had knew what was about to happen...

Member Since: July 6, 2010 Posts: 113 Comments: 31430
Quoting Ameister12:


amazing video thanks for sharing!
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Quoting weatherh98:


Its still got a front going but it looks like it has better circulation.


Too far north and the air is too cool to get anything tropical out of this. Now if this was near Bermuda then we could be looking at Alberto as the waters are a little warmer.
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Quoting nrtiwlnvragn:


Its still got a front going but it looks like it has better circulation.
Member Since: June 17, 2011 Posts: 11 Comments: 6461
I don't know if anybody has seen this but it looks as if another severe wx outbreak maybe looming this weekend for FL, coastal GA, and coastal Carolina's. Also lots of rain for these areas which is needed as we are in a severe drought.




Euro
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Boston MA

Today: Sunny, with a high near 88. South wind between 8 and 16 mph.
Member Since: July 6, 2010 Posts: 113 Comments: 31430
Quoting nrtiwlnvragn:


Still completely frontal in nature it appears. Give it time though, these things don't usually appear overnight....

On another note, looks like my area might hit 90 degrees today, which is absolutely insane for this time of year. This heat is also contributing to a lot of drought, as the lawn is still mostly dormant, even though it should be growing season.
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Quoting nrtiwlnvragn:

That means its forming good right?
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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
624 AM CDT MON APR 16 2012

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0539 AM TORNADO 1 N PORTLAND 27.89N 97.33W
04/16/2012 SAN PATRICIO TX LAW ENFORCEMENT

DAMAGE TO HOMES ON THE NORTH SIDE OF PORTLAND. FENCES AND
TREE LIMBS DOWN.

0544 AM FLASH FLOOD 4 SE WOODSBORO 28.20N 97.28W
04/16/2012 REFUGIO TX LAW ENFORCEMENT

WATER OVER THE ROAD ON FM 1360 AND ARANSAS RIVER ROAD
BETWEEN WOODSBORO AND BAYVIEW.

0544 AM TORNADO GREGORY 27.92N 97.29W
04/16/2012 SAN PATRICIO TX LAW ENFORCEMENT

DAMAGE TO COTTON GIN NEAR GREGORY ALONG WITH POWERLINES
DOWN.
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So, is that line from Zapata to Alice in Texas still on the map?

Last nights insane rainfall rates pushed the radar estimated accumulation above a foot, most of it within the first two hours!
Member Since: January 25, 2012 Posts: 33 Comments: 1520
This is what I say
we will have Alberto this week
we will have Beryl next month
we will hace Chris in June
then the season begin and the hunting will comence
Member Since: June 13, 2009 Posts: 2 Comments: 10972
Member Since: July 6, 2010 Posts: 113 Comments: 31430
still a lil dangerous out there...................SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
549 AM CDT MON APR 16 2012

TXC409-161100-
/O.CON.KCRP.TO.W.0002.000000T0000Z-120416T1100Z/
SAN PATRICIO-
549 AM CDT MON APR 16 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR
SOUTHEASTERN SAN PATRICIO COUNTY...

AT 544 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 2 MILES EAST OF
GREGORY...OR JUST SOUTHWEST OF MCCAMPBELL AIRPORT...MOVING NORTHEAST
AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
STATE HIGHWAY 35 NORTHEAST OF GREGORY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 2791 9715 2783 9720 2785 9726 2787 9726
2786 9731 2789 9740 2798 9732 2798 9727
2794 9721
TIME...MOT...LOC 1047Z 241DEG 14KT 2792 9725

$$
Member Since: August 6, 2011 Posts: 4 Comments: 36847
Quoting BahaHurican:
I remember u talking abt this....

Night crew is having 'puter problems, it seems - or school 2morrow,... lol

Morning everyone... It's school vacation week for me!!!!
I'm not liking the chances of our potential future 91L/Alberto... I think it'll stay cold core

Member Since: February 11, 2012 Posts: 82 Comments: 7607
Good Morning folks..69 and clear here this morning is sunny and bone dry central Florida, have a great day everyone
Member Since: August 6, 2011 Posts: 4 Comments: 36847
Quoting aislinnpaps:
Good Monday Morning, everyone. It's been booming thunder nonstop for about two and a half hours here in my part of Louisiana. We're already under a flood statement, that's fast. Hope all have a great Monday!

Three different storms during the night (Lake Jackson, TX). One of my Poms always barks at the first thunder, and she did it three times last night. 3 3/4" total precip. Radar shows another storm headed up from Victoria.

Who was it who asked for rain in the Houston area???
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.