Alert archive / Nebraska / Special Weather Statements in 2021

Special Weather Statement, NWS North Platte, NE

June 25, 2021Custer County, Nebraska

NWS North Platte, NE issued this special weather statement at Jun 25, 2021, 3:00 PM CDT for Custer County, Nebraska. It was in force for 60 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
Jun 25, 2021, 3:00 PM CDT (20:00 UTC)
Expired
Jun 25, 2021, 4:00 PM CDT
In force
60 min
Issued by
NWS North Platte, NE

County Custer County, NE

The radar

The Grand Island radar (KUEX), 122 km from the middle of the area, began a volume at 20:03 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.0 hours before the alert went out and 95 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, N. Platte/Lee Bi, NE at 12:00Z on 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 612 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.193958Sfc1 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
612 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
859 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

127 
WWUS83 KLBF 252000
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
300 PM CDT Fri Jun 25 2021
 
NEZ038-252100-
Custer NE-
300 PM CDT Fri Jun 25 2021

...SPECIAL WEATHER STATEMENT...

At 259 PM CDT, Doppler radar was tracking a strong thunderstorm near
Sumner, or 21 miles northeast of Lexington, moving northeast at 30
mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Mason City, Block Hill Basin, Gavin Siding, Intersection of Highway
183 and Cumro Road and Cumro.

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 4105 9964 4106 9963 4130 9920 4105 9921
TIME...MOT...LOC 1959Z 238DEG 26KT 4103 9949 

$$

NMJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 10:09 PM CDTSpecial Weather StatementLBFSheridan51 min
Jun 24, 11:01 PM CDTSpecial Weather StatementLBFSheridan59 min
Jun 25, 2:31 AM CDTAreal Flood AdvisoryLBFDeuel, Garden5 hr
Jun 25, 2:09 PM CDTSpecial Weather StatementLBFHayes51 min
Jun 25, 3:13 PM CDTSpecial Weather StatementLBFCuster47 min
Jun 25, 3:15 PM CDTSpecial Weather StatementLBFFrontier60 min
Jun 25, 3:20 PM CDTSevere Thunderstorm WarningLBFCuster40 min
Jun 25, 3:28 PM CDTSpecial Weather StatementLBFDawson32 min
Jun 25, 3:53 PM CDTSpecial Weather StatementLBFCuster67 min
Jun 25, 4:50 PM CDTSpecial Weather StatementLBFGarden40 min
Jun 25, 4:53 PM CDTSpecial Weather StatementLBFCuster52 min
Jun 25, 5:27 PM CDTSpecial Weather StatementLBFGarden48 min
Jun 25, 5:34 PM CDTSpecial Weather StatementLBFWheeler41 min
Jun 25, 5:41 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler49 min
Jun 25, 6:24 PM CDTSpecial Weather StatementLBFWheeler51 min
Jun 25, 6:39 PM CDTSpecial Weather StatementLBFKeith66 min

Nearby

Special Weather Statements in Nebraska, 2021Every 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.