Alert archive / Nebraska / Special Weather Statements in 2019

Special Weather Statement, NWS North Platte, NE

August 4, 2019Sheridan County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 4, 2019, 2:21 PM MDT for Sheridan County, Nebraska. It was in force for 39 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: Aug 4, 2019, 2:21 PM MDT (20:21 UTC)
Expired: Aug 4, 2019, 3:00 PM MDT
In force: 39 min
Issued by: NWS North Platte, NE

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 155 km from the middle of the area, began a volume at 20:21 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

Rapid City, SD (KUNR), launched 12:00Z, 8.4 hours before the alert went out and 149 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: 286 J/kg
Mixed-layer CIN: -291 J/kg
Mixed-layer LCL: 2343 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

455 
WWUS83 KLBF 042021
SPSLBF

Special Weather Statement
National Weather Service North Platte NE
221 PM MDT Sun Aug 4 2019
 
NEZ004-042100-
Sheridan NE-
221 PM MDT Sun Aug 4 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SHERIDAN COUNTY
UNTIL 300 PM MDT...

At 221 PM MDT, Doppler radar was tracking a strong thunderstorm over
Hay Springs, moving east at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Rushville, Hay Springs, Intersection of Beaver Creek Road and White
Clay Creek Road, Highway 250 crossing the Niobrara River,
Intersection of Highway 87 and Antelope Road and Walgren Lake State
Recreation Area.

This includes the following highways...
 Highway 20 between mile markers 74 and 91.
 Highway 250 between mile markers 31 and 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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 4289 10250 4246 10241 4252 10277 4277 10278
      4278 10277 4279 10279 4281 10279
TIME...MOT...LOC 2021Z 260DEG 13KT 4269 10267 

$$

Roberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 1:52 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	33 min
Aug 4, 2:12 PM MDT	Special Weather Statement	LBF	Sheridan	48 min
Aug 4, 3:07 PM MDT	Special Weather Statement	LBF	Sheridan	38 min
Aug 4, 3:47 PM MDT	Special Weather Statement	LBF	Sheridan	43 min
Aug 4, 4:22 PM MDT	Special Weather Statement	LBF	Hooker	38 min
Aug 4, 4:40 PM MDT	Special Weather Statement	LBF	Cherry	50 min
Aug 4, 4:54 PM MDT	Special Weather Statement	LBF	Grant, Hooker	51 min
Aug 4, 5:06 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	39 min
Aug 4, 5:45 PM MDT	Special Weather Statement	LBF	Keya Paha	45 min
Aug 4, 5:47 PM MDT	Special Weather Statement	LBF	Arthur, Grant	43 min

Nearby

Special Weather Statements in Nebraska, 2019 Every special weather statement in 2019

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.