Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 127, NWS Goodland, KS

July 8, 2020Dundy County, Hitchcock County, Nebraska

NWS Goodland, KS issued this severe thunderstorm warning at Jul 8, 2020, 7:29 PM MDT for Dundy County, Hitchcock County, Nebraska. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 8, 2020, 7:29 PM MDT (01:29 UTC)
Expired
Jul 8, 2020, 8:15 PM MDT
In force
46 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dundy County, NE, Hitchcock County, NE

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 01:31 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 8, 4:10 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.5 hours before the alert went out and 124 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, N. Platte/Lee Bi, NE at 00:00Z on 2020-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2624 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2020-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
2624 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
2346 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 7:06 PM MDT, 23 minutes earlier.

Area forecast discussion, Jul 8, 7:06 PM MDT, 23 minutes before
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Hazardous weather outlook, Jul 8, 2:30 PM MDT, 4 hours 59 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
230 PM MDT Wed Jul 8 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-091200-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
230 PM MDT Wed Jul 8 2020 /330 PM CDT Wed Jul 8 2020/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

A Heat Advisory is in effect for Gove, Graham and Norton counties.
Heat indices will reach up to 105 degrees this afternoon.

Strong to severe thunderstorms are expected along and east of
highway 27 from 4 PM MDT (5 PM CDT) through about midnight MDT (1 AM
CDT). The area of greatest concern for severe weather will be east
of a line from Max Nebraska to Atwood and Grainfield. The primary
threats will be hurricane force wind gusts to 90 mph and hail up to
the size of golf balls. The very strong wind gusts may produce some
blowing dust and significantly reduced visibilities. Locally heavy
rainfall will promote a threat for flash flooding.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY...

Heat indices on Monday and Tuesday will be near 100 degrees along and
east of a line from Norton to Oakley and Leoti.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed after 4 PM MDT (5 PM CDT) along and
east of highway 27. We would appreciate severe weather reports via
telephone and social media.

In the hours before

Special weather statement, Jul 8, 6:52 PM MDT, 37 minutes before
Special Weather Statement
National Weather Service Goodland KS
652 PM MDT Wed Jul 8 2020

COZ090-KSZ001-090115-
Yuma County CO-Cheyenne KS-
652 PM MDT Wed Jul 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN YUMA COUNTY IN
NORTHEASTERN COLORADO AND NORTHWESTERN CHEYENNE COUNTIES IN
NORTHWESTERN KANSAS UNTIL 715 PM MDT/815 PM CDT/...

At 652 PM MDT/752 PM CDT/, Doppler radar was tracking a strong
thunderstorm 10 miles north of Bonny Reservoir, moving east at 15
mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Beecher Island and Idalia.

This includes Highway 385 between mile markers 213 and 227.

LAT...LON 3965 10231 3983 10236 3995 10188 3969 10181
TIME...MOT...LOC 0052Z 262DEG 13KT 3977 10215

Lockhart
Special weather statement, Jul 8, 7:06 PM MDT, 23 minutes before
Special Weather Statement
National Weather Service Goodland KS
706 PM MDT Wed Jul 8 2020

NEZ079-090145-
Dundy NE-
706 PM MDT Wed Jul 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR DUNDY COUNTY UNTIL 745 PM MDT...

At 705 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles southwest of Champion, or 17 miles southwest of Imperial,
moving east at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Benkelman.

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
southwestern Nebraska.

LAT...LON 4035 10133 4003 10145 4018 10204 4035 10200
TIME...MOT...LOC 0105Z 285DEG 28KT 4032 10187

Lockhart
Special weather statement, Jul 8, 7:16 PM MDT, 13 minutes before
Special Weather Statement
National Weather Service Goodland KS
816 PM CDT Wed Jul 8 2020

KSZ001-090145-
Cheyenne KS-
816 PM CDT Wed Jul 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHEYENNE COUNTY IN
NORTHWESTERN KANSAS UNTIL 845 PM CDT...

At 816 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles west of St. Francis, moving east at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
St. Francis and Wheeler.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northwestern Kansas.

LAT...LON 3962 10205 3986 10205 3993 10165 3963 10162
TIME...MOT...LOC 0116Z 262DEG 17KT 3980 10200

Lockhart

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 6:52 PM MDTSpecial Weather StatementGLDCheyenne23 min
Jul 8, 7:16 PM MDTSpecial Weather StatementGLDCheyenne29 min
Jul 8, 8:01 PM MDTSpecial Weather StatementGLDCheyenne, Rawlins44 min
Jul 8, 8:14 PM MDTSevere Thunderstorm WarningGLDCheyenne, Decatur, Rawlins61 min
Jul 8, 9:11 PM MDTSevere Thunderstorm WarningGLDDecatur, Norton, Rawlins64 min
Jul 8, 10:13 PM MDTSpecial Weather StatementGLDNorton17 min
Jul 8, 10:15 PM MDTSevere Thunderstorm WarningGLDNorton20 min
Jul 8, 10:34 PM MDTSpecial Weather StatementGLDNorton26 min
Jul 9, 1:14 AM MDTSpecial Weather StatementGLDGraham46 min
Jul 9, 1:30 AM MDTSpecial Weather StatementGLDGraham60 min
Jul 8, 7:06 PM MDTSpecial Weather StatementGLDDundy39 min
Jul 8, 7:53 PM MDTSpecial Weather StatementGLDHitchcock37 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2020Every severe thunderstorm warning in 2020

Sources

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