Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Goodland, KS

April 4, 2021Red Willow County, Nebraska; Decatur County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at Apr 4, 2021, 3:42 PM CDT for Red Willow County, Nebraska; Decatur County, Kansas. It was in force for 33 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: Apr 4, 2021, 3:42 PM CDT (20:42 UTC)
Expired: Apr 4, 2021, 4:15 PM CDT
In force: 33 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Decatur County, KS, Red Willow County, NE

The radar

The Goodland radar (KGLD), 137 km from the middle of the area, began a volume at 20:42 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
Apr 4, 4:10 PM CDT	TSTM WND GST 55	7 Ne Oberlin, KS

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.7 hours before the alert went out and 128 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3948 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

626 
WUUS53 KGLD 042042
SVRGLD
KSC039-NEC145-042115-
/O.NEW.KGLD.SV.W.0001.210404T2042Z-210404T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
342 PM CDT Sun Apr 4 2021

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Northern Decatur County in northwestern Kansas...
  Southeastern Red Willow County in southwestern Nebraska...

* Until 415 PM CDT.

* At 342 PM CDT, a severe thunderstorm was located 9 miles north of
  Oberlin, moving northeast at 55 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Trained weather spotters.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Danbury, Lebanon, Cedar Bluffs and Traer. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4000 10019 4000 10018 3995 10018 3982 10063
      3998 10074 4022 10020
TIME...MOT...LOC 2042Z 240DEG 49KT 3994 10060 

HAIL...<.75IN
WIND...70MPH
 
$$

024

1 follow-up statement

869 
WWUS53 KGLD 042112
SVSGLD

Severe Weather Statement
National Weather Service Goodland KS
412 PM CDT Sun Apr 4 2021

KSC039-NEC145-042122-
/O.EXP.KGLD.SV.W.0001.000000T0000Z-210404T2115Z/
Decatur KS-Red Willow NE-
412 PM CDT Sun Apr 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DECATUR AND
SOUTHEASTERN RED WILLOW COUNTIES WILL EXPIRE AT 415 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 4000 10019 4000 10018 3995 10018 3982 10063
      3998 10074 4022 10020
TIME...MOT...LOC 2112Z 240DEG 49KT 4012 10018 

$$

024

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 4:30 PM CDT	Special Weather Statement	GLD	Red Willow	15 min
Apr 4, 4:46 PM CDT	Special Weather Statement	GLD	Red Willow	14 min
Apr 4, 2:10 PM CDT	Red Flag Warning	GLD	Gove, Graham, Greeley, Logan, Sheridan, Thomas and 2 more	6 hr
Apr 4, 4:16 PM CDT	Special Weather Statement	GLD	Decatur	29 min
Apr 4, 4:39 PM CDT	Special Weather Statement	GLD	Logan	21 min
Apr 4, 4:45 PM CDT	Special Weather Statement	GLD	Norton	15 min
Apr 4, 5:01 PM CDT	Special Weather Statement	GLD	Decatur	29 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021 Severe Thunderstorm Warnings in Kansas, 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.