Alert archive / Colorado / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 202, NWS Goodland, KS

August 19, 2021Yuma County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Aug 19, 2021, 3:14 PM MDT for Yuma County, Colorado. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 19, 2021, 3:14 PM MDT (21:14 UTC)
Expired: Aug 19, 2021, 4:00 PM MDT
In force: 46 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Yuma County, CO

The radar

The Goodland radar (KGLD), 123 km from the middle of the area, began a volume at 21:14 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

Time	Report	Where	Remark
Aug 19, 3:23 PM MDT	HAIL 0.25	8 Ese Clarkville, CO	SPOTTER REPORTED PEA SIZE HAIL AND HEAVY RAIN. TIME ESTIMATED BASED ON RADAR.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 19, 1:14 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 9.2 hours before the alert went out and 91 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: 246 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

252 
WUUS53 KGLD 192114
SVRGLD
COC125-192200-
/O.NEW.KGLD.SV.W.0202.210819T2114Z-210819T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
314 PM MDT Thu Aug 19 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  North central Yuma County in northeastern Colorado...

* Until 400 PM MDT.

* At 313 PM MDT, a severe thunderstorm was located 11 miles north of
  Eckley, or 17 miles northeast of Yuma, moving northeast at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  north central Yuma County.

This includes Highway 385 between mile markers 261 and 269.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4044 10214 4018 10238 4025 10261 4044 10256
TIME...MOT...LOC 2113Z 208DEG 13KT 4028 10247 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KMK/JRM

2 follow-up statements

137 
WWUS53 KGLD 192125
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
325 PM MDT Thu Aug 19 2021

COC125-192200-
/O.CON.KGLD.SV.W.0202.000000T0000Z-210819T2200Z/
Yuma CO-
325 PM MDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR NORTH CENTRAL YUMA COUNTY...

At 325 PM MDT, a severe thunderstorm was located 14 miles north of
Eckley, or 19 miles south of Holyoke, moving northeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of north
central Yuma County.

This includes Highway 385 between mile markers 261 and 270.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4020 10236 4027 10253 4044 10253 4044 10214
TIME...MOT...LOC 2125Z 208DEG 13KT 4032 10244 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KMK/JRM

749 
WWUS53 KGLD 192133
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
333 PM MDT Thu Aug 19 2021

COC125-192200-
/O.CON.KGLD.SV.W.0202.000000T0000Z-210819T2200Z/
Yuma CO-
333 PM MDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR NORTH CENTRAL YUMA COUNTY...

At 333 PM MDT, a severe thunderstorm was located 15 miles southeast
of Highland Center, or 17 miles south of Holyoke, moving northeast at
15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of north
central Yuma County.

This includes Highway 385 between mile markers 263 and 270.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4026 10234 4029 10253 4044 10253 4044 10214
TIME...MOT...LOC 2133Z 208DEG 13KT 4035 10242 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

KMK/JRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 2:49 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	26 min
Aug 19, 3:38 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	52 min
Aug 19, 4:05 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	25 min
Aug 19, 5:05 PM MDT	Special Weather Statement	GLD	Yuma	25 min
Aug 19, 5:37 PM MDT	Special Weather Statement	GLD	Phillips	38 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2021 Every severe thunderstorm 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.