Alert archive / Kansas / High Wind Warnings in 2021

High Wind Warning 4, NWS Goodland, KS

April 7, 202113 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska; Cheyenne County, Kit Carson County, Yuma County, Colorado

NWS Goodland, KS issued this high wind warning at Apr 7, 2021, 3:55 AM CDT for 13 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska; Cheyenne County, Kit Carson County, Yuma County, Colorado. It took effect at Apr 7, 2021, 10:00 AM CDT. It was in force for 9 hr. 12 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 7, 2021, 3:55 AM CDT (08:55 UTC)
In effect from
Apr 7, 2021, 10:00 AM CDT
Expired
Apr 7, 2021, 6:53 PM CDT
In force
9 hr
Issued by
NWS Goodland, KS

Counties Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 40 km from the middle of the area, began a volume at 08:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 7, 10:43 AM CDTNON-TSTM WND GST 522 E Mccook, NEASOS STATION KMCK MCCOOK AIRPORT.
Apr 7, 11:18 AM CDTHIGH SUST WINDS 402 E Mccook, NEASOS STATION KMCK MCCOOK AIRPORT.
Apr 7, 11:53 AM CDTHIGH SUST WINDS 402 E Mccook, NEASOS STATION KMCK MCCOOK AIRPORT GUSTING TO 56MPH.
Apr 7, 11:53 AM CDTHIGH SUST WINDS 431 Nne Goodland, KSASOS STATION KGLD GOODLAND GUSTING TO 56MPH.
Apr 7, 12:02 PM CDTHIGH SUST WINDS 424 Ne Idalia, COMESONET STATION CO047 385N220 IDALIA GUSTING TO 50MPH.
Apr 7, 12:25 PM CDTNON-TSTM WND GST 521 W Kit Carson, COMESONET STATION UP729 0.5 W KIT CARSON (UPR).
Apr 7, 12:27 PM CDTNON-TSTM WND GST 581 Nne Goodland, KSASOS STATION KGLD GOODLAND.
Apr 7, 1:12 PM CDTHIGH SUST WINDS 404 Ne Idalia, COMESONET STATION CO047 385N220 IDALIA. 40 MPH SUSTAINED GUSTING TO 46 MPH.
Apr 7, 1:35 PM CDTHIGH SUST WINDS 413 Se Oakley, KSAWOS STATION KOEL 2 ESE OAKLEY WINDS GUSTING TO 49MPH.
Apr 7, 1:40 PM CDTHIGH SUST WINDS 413 Ese Oakley, KSMESONET STATION K5OK7 I-70 - EAST OAKLEY INTERCHANGE GUSTING TO 46MPH.
Apr 7, 2:53 PM CDTNON-TSTM WND GST 542 E Mccook, NEASOS STATION KMCK MCCOOK AIRPORT.
Apr 7, 3:53 PM CDTNON-TSTM WND GST 602 E Mccook, NEASOS IN MCCOOK (KMCK) REPORTED SUSTAINED WINDS AT 44 MPH GUSTING TO 60 MPH AT 2053 UTC.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 8.9 hours before the alert went out and 177 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2021-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2021-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

572 
WWUS73 KGLD 070855
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
255 AM MDT Wed Apr 7 2021

COZ091-092-KSZ013-027-041-071800-
/O.NEW.KGLD.HW.W.0004.210407T1500Z-210408T0000Z/
Kit Carson-Cheyenne-Sherman-Wallace-Greeley-
Including the cities of Burlington, Arapahoe, Cheyenne Wells, 
Goodland, Sharon Springs, and Tribune
255 AM MDT Wed Apr 7 2021

...HIGH WIND WARNING IN EFFECT FROM 9 AM THIS MORNING TO 6 PM MDT
THIS EVENING...

* WHAT...North winds 35 to 45 mph with gusts up to 60 mph 
  expected.

* WHERE...In Kansas, Sherman, Wallace and Greeley Counties. In 
  Colorado, Kit Carson and Cheyenne Counties.

* WHEN...From 9 AM this morning to 6 PM MDT this evening.

* IMPACTS...Damaging winds may blow down trees and power lines.
  Isolated power outages are possible. Travel will be difficult, 
  especially for high profile vehicles.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$
5 follow-up statements
688 
WWUS73 KGLD 071346
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
746 AM MDT Wed Apr 7 2021

COZ091-092-080000-
/O.CON.KGLD.HW.W.0004.210407T1500Z-210408T0000Z/
Kit Carson-Cheyenne-
Including the cities of Burlington, Arapahoe, and Cheyenne Wells
746 AM MDT Wed Apr 7 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...North winds 30 to 45 mph with gusts up to 60 mph.

* WHERE...In Kansas, Sherman, Wallace and Greeley Counties. In 
  Colorado, Kit Carson and Cheyenne Counties.

* WHEN...From 9 AM this morning to 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be the
  primary impact, especially on west east routes where cross 
  winds will be strongest. This includes Interstate 70 and Highway
  40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must drive, watch for objects blowing across the roadway 
and into your path. Keep a safe distance from cars in adjacent 
lanes as strong gusts could suddenly push a vehicle outside its 
lane of travel. Take extra care in high-profile vehicles such as a
truck, van, or SUV, or when towing a trailer, as these are more 
prone to be pushed or even flipped by high winds.

&&

$$

KSZ013-027-041-080000-
/O.CON.KGLD.HW.W.0004.210407T1500Z-210408T0000Z/
Sherman-Wallace-Greeley-
Including the cities of Goodland, Sharon Springs, and Tribune
746 AM MDT Wed Apr 7 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...North winds 30 to 45 mph with gusts up to 60 mph 
  expected.

* WHERE...In Kansas, Sherman, Wallace and Greeley Counties. In 
  Colorado, Kit Carson and Cheyenne Counties.

* WHEN...From 9 AM this morning to 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be the
  primary impact, especially on west east routes where cross 
  winds will be strongest. This includes Interstate 70 and Highway
  40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must drive, watch for objects blowing across the roadway 
and into your path. Keep a safe distance from cars in adjacent 
lanes as strong gusts could suddenly push a vehicle outside its 
lane of travel. Take extra care in high-profile vehicles such as a
truck, van, or SUV, or when towing a trailer, as these are more 
prone to be pushed or even flipped by high winds.

&&

$$

Vincent
042 
WWUS73 KGLD 071703 AAA
NPWGLD

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Goodland KS
1103 AM MDT Wed Apr 7 2021

COZ090-NEZ079>081-080000-
/O.EXA.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Yuma-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, Benkelman, Culbertson, 
Trenton, Stratton Ne, Palisade, and McCook
1103 AM MDT Wed Apr 7 2021 /1203 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING IN EFFECT UNTIL 6 PM MDT /7 PM CDT/ THIS
EVENING...

* WHAT...Northwest winds 30 to 45 mph with gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be the
  primary impact, especially on west east routes where cross winds
  will be strongest. Affected routes include Interstate 70,
  Highway 40, Highway 34, Highway 36, and Highway 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

&&

$$

KSZ001>004-014>016-028-029-042-080000-
/O.EXA.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Cheyenne-Rawlins-Decatur-Norton-Thomas-Sheridan-Graham-Logan-Gove-
Wichita-
Including the cities of St. Francis, Bird City, Atwood, Oberlin, 
Norton, Colby, Hoxie, Hill City, Oakley, Quinter, Grinnell, 
Grainfield, and Leoti
1203 PM CDT Wed Apr 7 2021

...HIGH WIND WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Northwest winds 30 to 45 mph with gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated
  to be the primary impact, especially on west east routes where 
  cross winds will be strongest. Affected routes include 
  Interstate 70, Highway 40, Highway 34, Highway 36, and Highway 
  24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

High dust concentrations can aggravate asthma and cause
respiratory problems, especially in children, the elderly, or
those with pre-existing respiratory conditions. The Kansas
Department of Health and Environment recommends taking
preventative measures such as staying indoors or wearing
protective breathing masks, if outside.

&&

$$

COZ091-092-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Kit Carson-Cheyenne-
Including the cities of Burlington, Arapahoe, and Cheyenne Wells
1103 AM MDT Wed Apr 7 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...North winds 30 to 45 mph with gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated
  to be the primary impact, especially on west east routes where 
  cross winds will be strongest. Affected routes include 
  Interstate 70, Highway 40, Highway 34, Highway 36, and Highway 
  24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

&&

$$

KSZ013-027-041-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Sherman-Wallace-Greeley-
Including the cities of Goodland, Sharon Springs, and Tribune
1103 AM MDT Wed Apr 7 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

* WHAT...North winds 30 to 45 mph with gusts up to 60 mph 
  expected.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be the
  primary impact, especially on west east routes where cross 
  winds will be strongest. Affected routes include Interstate 70, 
  Highway 40, Highway 34, Highway 36, and Highway 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage 
property. If you must drive, watch for objects blowing across the 
roadway and into your path. Keep a safe distance from cars in 
adjacent lanes as strong gusts could suddenly push a vehicle 
outside its lane of travel. Take extra care in high-profile 
vehicles such as a truck, van, or SUV, or when towing a trailer, 
as these are more prone to be pushed or even flipped by high 
winds.

High dust concentrations can aggravate asthma and cause
respiratory problems, especially in children, the elderly, or
those with pre-existing respiratory conditions. The Kansas
Department of Health and Environment recommends taking
preventative measures such as staying indoors or wearing
protective breathing masks, if outside.

&&

$$

Vincent
363 
WWUS73 KGLD 071704
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
1104 AM MDT Wed Apr 7 2021

COZ090>092-NEZ079>081-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Yuma-Kit Carson-Cheyenne-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, Burlington, Arapahoe, 
Cheyenne Wells, Benkelman, Culbertson, Trenton, Stratton Ne, 
Palisade, and McCook
1104 AM MDT Wed Apr 7 2021 /1204 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT /7 PM CDT/
THIS EVENING...

* WHAT...North to Northwest winds sustained at 30 to 45 mph with 
  gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be 
  the primary impact, especially on west east routes where cross 
  winds will be strongest. Affected routes include Interstate 
  70, Highway 40, Highway 34, Highway 36, and Highway 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

&&

$$

KSZ001>004-013>016-027>029-041-042-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-Graham-
Wallace-Logan-Gove-Greeley-Wichita-
Including the cities of St. Francis, Bird City, Atwood, Oberlin, 
Norton, Goodland, Colby, Hoxie, Hill City, Sharon Springs, 
Oakley, Quinter, Grinnell, Grainfield, Tribune, and Leoti
1104 AM MDT Wed Apr 7 2021 /1204 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT /7 PM CDT/
THIS EVENING...

* WHAT...North to Northwest winds sustained at 30 to 45 mph with 
  gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be 
  the primary impact, especially on west east routes where cross 
  winds will be strongest. Affected routes include Interstate 
  70, Highway 40, Highway 34, Highway 36, and Highway 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

High dust concentrations can aggravate asthma and cause
respiratory problems, especially in children, the elderly, or
those with pre-existing respiratory conditions. The Kansas
Department of Health and Environment recommends taking
preventative measures such as staying indoors or wearing
protective breathing masks, if outside.

&&

$$

Vincent
044 
WWUS73 KGLD 072112 AAA
NPWGLD

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Goodland KS
312 PM MDT Wed Apr 7 2021

COZ090>092-NEZ079>081-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Yuma-Kit Carson-Cheyenne-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, Burlington, Arapahoe, 
Cheyenne Wells, Benkelman, Culbertson, Trenton, Stratton Ne, 
Palisade, and McCook
312 PM MDT Wed Apr 7 2021 /412 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT /7 PM CDT/
THIS EVENING...

* WHAT...North to Northwest winds sustained at 30 to 45 mph with 
  gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be 
  the primary impact, especially on west east routes where cross 
  winds will be strongest. Affected routes include Interstate 
  70, Highway 40, Highway 34, Highway 36, and Highway 24.

* ADDITIONAL INFORMATION...At 253 PM MDT, the airport in McCook,
  Nebraska reported a sustained wind of 44 mph gusting to 60 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

&&

$$

KSZ001>004-013>016-027>029-041-042-080000-
/O.CON.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-Graham-
Wallace-Logan-Gove-Greeley-Wichita-
Including the cities of St. Francis, Bird City, Atwood, Oberlin, 
Norton, Goodland, Colby, Hoxie, Hill City, Sharon Springs, 
Oakley, Quinter, Grinnell, Grainfield, Tribune, and Leoti
312 PM MDT Wed Apr 7 2021 /412 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM MDT /7 PM CDT/
THIS EVENING...

* WHAT...North to Northwest winds sustained at 30 to 45 mph with 
  gusts up to 60 mph.

* WHERE...Entire Tri-State area.

* WHEN...Through 6 PM MDT this evening.

* IMPACTS...Hazardous travel conditions are anticipated to be 
  the primary impact, especially on west east routes where cross 
  winds will be strongest. Affected routes include Interstate 
  70, Highway 40, Highway 34, Highway 36, and Highway 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds of this magnitude may down trees, power lines, and damage
property. If you must drive, watch for objects blowing across the
roadway and into your path. Keep a safe distance from cars in
adjacent lanes as strong gusts could suddenly push a vehicle
outside its lane of travel. Take extra care in high-profile
vehicles such as a truck, van, or SUV, or when towing a trailer,
as these are more prone to be pushed or even flipped by high
winds.

&&

$$

Vincent
268 
WWUS73 KGLD 072353
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
553 PM MDT Wed Apr 7 2021

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-080100-
/O.CAN.KGLD.HW.W.0004.000000T0000Z-210408T0000Z/
Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-
Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-
Hitchcock-Red Willow-
Including the cities of Yuma, Wray, Burlington, Arapahoe, 
Cheyenne Wells, St. Francis, Bird City, Atwood, Oberlin, Norton, 
Goodland, Colby, Hoxie, Hill City, Sharon Springs, Oakley, 
Quinter, Grinnell, Grainfield, Tribune, Leoti, Benkelman, 
Culbertson, Trenton, Stratton Ne, Palisade, and McCook
553 PM MDT Wed Apr 7 2021 /653 PM CDT Wed Apr 7 2021/

...HIGH WIND WARNING IS CANCELLED...

Winds across the warning area have diminished below criteria
prompting cancellation. Some gusts over the next couple hours
could still reach around 50 mph in isolated spots.

$$

JN

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 4:05 AM CDTFire Weather WatchGLDCheyenne, Greeley, Sherman, Wallace, Wichita11 hr
Apr 7, 3:29 PM CDTRed Flag WarningGLDCheyenne, Greeley, Logan, Sherman, Wallace, Wichita28 hr
Apr 6, 8:26 PM CDTDust Storm AdvisoryGLDCheyenne, Kit Carson52 min

Nearby

High Wind Warnings in Kansas, 2021High Wind Warnings in Nebraska, 2021High Wind Warnings in Colorado, 2021Every high wind warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.