Alert archive / Colorado / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 15, NWS Goodland, KS

May 4, 2020Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at May 4, 2020, 12:04 AM MDT for Yuma County, Colorado. It was in force for 41 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
May 4, 2020, 12:04 AM MDT (06:04 UTC)
Expired
May 4, 2020, 12:45 AM MDT
In force
41 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Yuma County, CO

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 06:06 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 nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 6.1 hours before the alert went out and 70 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 2020-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 607 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2020-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939587897117Sfc1 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
607 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
2079 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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 May 3, 11:47 PM MDT, 17 minutes earlier.

Area forecast discussion, May 3, 11:47 PM MDT, 17 minutes before
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Hazardous weather outlook, May 3, 8:52 PM MDT, 3 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Goodland KS
852 PM MDT Sun May 3 2020

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-041645-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
852 PM MDT Sun May 3 2020 /952 PM CDT Sun May 3 2020/

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

.DAY ONE...TONIGHT...

The Marginal Risk for severe thunderstorms remains across a portion
of the region tonight mainly north of Interstate 70 and west of a
line from Colby, Kansas to McCook, Nebraska. A few strong to severe
storms continue to move across the area this evening with additional
storms expected to develop after midnight.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY...

Hazardous weather is not anticipated at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Local storm report, May 3, 6:38 PM MDT, 5 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
638 PM MDT SUN MAY 3 2020

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

0630 PM     HAIL             7 NNE CULBERTSON        40.32N 100.80W
05/03/2020  E0.88 INCH       HITCHCOCK          NE   TRAINED SPOTTER

&&
Special weather statement, May 3, 7:05 PM MDT, 4 hours 59 minutes before
Special Weather Statement
National Weather Service Goodland KS
705 PM MDT Sun May 3 2020

COZ090-040130-
Yuma County CO-
705 PM MDT Sun May 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN YUMA COUNTY UNTIL 730 PM
MDT...

At 704 PM MDT, Doppler radar was tracking a strong thunderstorm 5
miles east of Yuma, moving northeast at 50 mph.

Half inch hail and winds up to 40 mph will be possible with this
storm.

Locations impacted include...
Yuma, Eckley and Wauneta.

This includes Highway 385 between mile markers 247 and 265.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4000 10268 4018 10278 4038 10227 4015 10206
TIME...MOT...LOC 0104Z 246DEG 42KT 4014 10262

PATTON
Special weather statement, May 3, 7:18 PM MDT, 4 hours 46 minutes before
Special Weather Statement
National Weather Service Goodland KS
718 PM MDT Sun May 3 2020

COZ090-040145-
Yuma County CO-
718 PM MDT Sun May 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN YUMA COUNTY UNTIL
745 PM MDT...

At 717 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles north of Cope, or 22 miles south of Yuma, moving east at 30
mph.

Penny size hail and winds up to 40 mph will be possible with this
storm.

Locations impacted include...
Abarr and Heartstrong.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4000 10280 4003 10253 3970 10249 3970 10280
TIME...MOT...LOC 0117Z 260DEG 25KT 3981 10281

PATTON
Special weather statement, May 3, 7:30 PM MDT, 4 hours 34 minutes before
Special Weather Statement
National Weather Service Goodland KS
730 PM MDT Sun May 3 2020

COZ090-NEZ079-040145-
Yuma County CO-Dundy NE-
730 PM MDT Sun May 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN YUMA AND
NORTHWESTERN DUNDY COUNTIES UNTIL 745 PM MDT...

At 729 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles north of Wray, moving east at 45 mph.

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

Locations impacted include...
Alvin and Wauneta.

This includes Highway 385 between mile markers 247 and 265.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4035 10205 4035 10192 4023 10191 4011 10223
      4029 10242 4044 10217 4044 10205
TIME...MOT...LOC 0129Z 250DEG 41KT 4024 10222

PATTON
Special weather statement, May 3, 9:25 PM MDT, 2 hours 39 minutes before
Special Weather Statement
National Weather Service Goodland KS
925 PM MDT Sun May 3 2020

COZ090-040400-
Yuma County CO-
925 PM MDT Sun May 3 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN YUMA COUNTY UNTIL
1000 PM MDT...

At 925 PM MDT, Doppler radar was tracking a strong thunderstorm 4
miles west of Yuma, moving east at 30 mph.

Half inch hail and winds up to 40 mph will be possible with this
storm.

Locations impacted include...
Yuma.

LAT...LON 4029 10253 3999 10253 4000 10279 4029 10279
TIME...MOT...LOC 0325Z 279DEG 26KT 4012 10281

PATTON
Special weather statement, May 3, 11:33 PM MDT, 31 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 10:58 PM MDTSevere Thunderstorm WarningGLDSherman47 min
May 3, 11:17 PM MDTSevere Thunderstorm WarningGLDSherman43 min
May 4, 12:09 AM MDTSpecial Weather StatementGLDThomas36 min
May 4, 12:46 AM MDTSpecial Weather StatementGLDRawlins44 min
May 4, 1:14 AM MDTSpecial Weather StatementGLDDecatur46 min
May 4, 1:45 AM MDTSpecial Weather StatementGLDDecatur60 min
May 3, 7:05 PM MDTSpecial Weather StatementGLDYuma25 min
May 3, 7:18 PM MDTSpecial Weather StatementGLDYuma27 min
May 3, 7:30 PM MDTSpecial Weather StatementGLDYuma15 min
May 3, 7:33 PM MDTSevere Thunderstorm WarningGLDYuma42 min
May 3, 8:32 PM MDTSevere Thunderstorm WarningGLDYuma28 min
May 3, 8:59 PM MDTSevere Thunderstorm WarningGLDYuma31 min
May 3, 9:05 PM MDTSevere Thunderstorm WarningGLDKit Carson40 min
May 3, 9:25 PM MDTSpecial Weather StatementGLDYuma35 min
May 3, 9:32 PM MDTSevere Thunderstorm WarningGLDYuma28 min
May 3, 9:45 PM MDTSevere Thunderstorm WarningGLDKit Carson45 min
May 3, 10:28 PM MDTSevere Thunderstorm WarningGLDKit Carson32 min
May 3, 11:33 PM MDTSpecial Weather StatementGLDYuma27 min
May 4, 12:35 AM MDTSevere Thunderstorm WarningGLDYuma55 min
May 3, 6:05 PM MDTSevere Thunderstorm WarningGLDHitchcock, Red Willow40 min
May 3, 6:24 PM MDTSpecial Weather StatementGLDDundy21 min
May 3, 6:44 PM MDTSevere Thunderstorm WarningGLDRed Willow46 min
May 4, 12:48 AM MDTSpecial Weather StatementGLDDundy42 min
May 4, 12:55 AM MDTSpecial Weather StatementGLDHitchcock50 min
May 4, 1:02 AM MDTSevere Thunderstorm WarningGLDDundy58 min
May 4, 1:59 AM MDTSpecial Weather StatementGLDHitchcock46 min
May 4, 2:06 AM MDTSpecial Weather StatementGLDDundy54 min
May 4, 2:35 AM MDTSpecial Weather StatementGLDRed Willow55 min

Nearby

Severe Thunderstorm Warnings in Colorado, 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.