Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS North Platte, NE

April 5, 2021Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 5, 2021, 7:03 PM CDT for Holt County, Nebraska. It was in force for 27 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 5, 2021, 7:03 PM CDT (00:03 UTC)
Expired: Apr 5, 2021, 7:30 PM CDT
In force: 27 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Holt County, NE

The radar

The North Platte radar (KLNX), 183 km from the middle of the area, began a volume at 00:03 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

Omaha, NE (KOAX), launched 00:00Z, 0.1 hours before the alert went out and 218 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: 820 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 2210 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

067 
WUUS53 KLBF 060003
SVRLBF
NEC089-060030-
/O.NEW.KLBF.SV.W.0001.210406T0003Z-210406T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
703 PM CDT Mon Apr 5 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  East central Holt County in north central Nebraska...

* Until 730 PM CDT.

* At 703 PM CDT, a severe thunderstorm was located 7 miles northwest
  of Page, or 8 miles east of O'Neill, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Page and Opportunity. 

This includes Highway 20 between mile markers 312 and 313.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4241 9859 4263 9860 4268 9831 4238 9830
TIME...MOT...LOC 0003Z 282DEG 32KT 4249 9848 

HAIL...<.75IN
WIND...60MPH
 
$$

Snively

2 follow-up statements

034 
WWUS53 KLBF 060018
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
718 PM CDT Mon Apr 5 2021

NEC089-060030-
/O.CON.KLBF.SV.W.0001.000000T0000Z-210406T0030Z/
Holt NE-
718 PM CDT Mon Apr 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR EAST CENTRAL HOLT COUNTY...

At 718 PM CDT, a severe thunderstorm was located 10 miles northeast
of Page, or 16 miles east of O'Neill, moving east at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Page and Opportunity. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4240 9851 4264 9852 4268 9831 4238 9830
TIME...MOT...LOC 0018Z 268DEG 24KT 4253 9833 

HAIL...0.75IN
WIND...60MPH
 
$$

Snively

461 
WWUS53 KLBF 060029
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
729 PM CDT Mon Apr 5 2021

NEC089-060039-
/O.EXP.KLBF.SV.W.0001.000000T0000Z-210406T0030Z/
Holt NE-
729 PM CDT Mon Apr 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HOLT COUNTY WILL
EXPIRE AT 730 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
this thunderstorm.

LAT...LON 4240 9851 4264 9852 4268 9831 4238 9830
TIME...MOT...LOC 0029Z 282DEG 32KT 4251 9823 

$$

Snively

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 5, 7:42 PM CDT	Special Weather Statement	LBF	Garfield	48 min
Apr 5, 8:57 PM CDT	Special Weather Statement	LBF	Rock	33 min
Apr 6, 3:22 AM CDT	Winter Weather Advisory	LBF	Sheridan	31 hr
Apr 6, 9:12 AM CDT	Special Weather Statement	LBF	Boyd	48 min
Apr 6, 5:45 PM CDT	Special Weather Statement	LBF	Custer	30 min
Apr 6, 6:12 PM CDT	Special Weather Statement	LBF	Custer	33 min
Apr 6, 6:28 PM CDT	Severe Thunderstorm Warning	LBF	Custer	32 min
Apr 6, 6:37 PM CDT	Special Weather Statement	LBF	Hooker	38 min
Apr 6, 6:49 PM CDT	Special Weather Statement	LBF	Logan, Thomas	41 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.