Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS Goodland, KS

April 27, 2021Dundy County, Nebraska

NWS Goodland, KS issued this special weather statement at Apr 27, 2021, 7:50 PM MDT for Dundy County, Nebraska. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 27, 2021, 7:50 PM MDT (01:50 UTC)
Expired: Apr 27, 2021, 8:30 PM MDT
In force: 40 min
Issued by: NWS Goodland, KS

County Dundy County, NE

The radar

The Goodland radar (KGLD), 110 km from the middle of the area, began a volume at 01:53 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, 1.8 hours before the alert went out and 112 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 26 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 27, 7:12 PM MDT, 38 minutes earlier.

Area forecast discussion, Apr 27, 7:12 PM MDT, 38 minutes before

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Hazardous weather outlook, Apr 27, 3:34 PM MDT, 4 hours 16 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
334 PM MDT Tue Apr 27 2021

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-282145-
Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-
Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock-
Red Willow-
334 PM MDT Tue Apr 27 2021 /434 PM CDT Tue Apr 27 2021/

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

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

A Red Flag Warning for critical fire weather conditions is in effect
this afternoon for Greeley and Wichita counties. Any critical fire
conditions will quickly come to an end this evening with a cold front
moving south through the area.

There is a Slight Risk for severe weather this afternoon and evening
for the entire Tri State Region. Severe storms will be capable of
producing large hail, damaging winds and even an isolated tornado or
two, especially along and north of Interstate 70. Storms may also
produce heavy rainfall.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY...

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be required now through this evening. Any
reports of hail, wind damage, heavy rain, and tornadoes are great
appreciated.

In the hours before

Local storm report, Apr 27, 7:32 PM MDT, 18 minutes before

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Local storm report, Apr 27, 7:34 PM MDT, 16 minutes before

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Local storm report, Apr 27, 7:40 PM MDT, 10 minutes before

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Local storm report, Apr 27, 7:44 PM MDT, 6 minutes before

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Local storm report, Apr 27, 7:47 PM MDT, 3 minutes before

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Special weather statement, Apr 27, 7:50 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service Goodland KS
750 PM MDT Tue Apr 27 2021

COZ090-NEZ079-280230-
Yuma County CO-Dundy NE-
750 PM MDT Tue Apr 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN YUMA AND WESTERN
DUNDY COUNTIES UNTIL 830 PM MDT...

At 750 PM MDT, Doppler radar was tracking a strong thunderstorm 15
miles northeast of Wray, moving northeast at 25 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 249 and 269.

A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for
southwestern Nebraska.

LAT...LON 4044 10205 4035 10205 4035 10165 4006 10189
      4017 10234 4044 10235
TIME...MOT...LOC 0150Z 219DEG 20KT 4023 10202

Lockhart

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 6:23 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Sherman	67 min
Apr 27, 6:40 PM MDT	Special Weather Statement	GLD	Cheyenne, Sherman	65 min
Apr 27, 6:55 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	50 min
Apr 27, 7:21 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Rawlins, Sherman	39 min
Apr 27, 7:59 PM MDT	Special Weather Statement	GLD	Rawlins	16 min
Apr 27, 8:26 PM MDT	Special Weather Statement	GLD	Decatur, Rawlins	49 min
Apr 27, 9:33 PM MDT	Special Weather Statement	GLD	Decatur	42 min

Nearby

Special Weather Statements in Nebraska, 2021 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.