Alert archive / Nebraska / Special Weather Statements in 2015

Special Weather Statement, NWS North Platte, NE

August 4, 2015Deuel County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 4, 2015, 10:21 AM MDT for Deuel 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, 2015, 10:21 AM MDT (16:21 UTC)
Expired: Aug 4, 2015, 11:00 AM MDT
In force: 39 min
Issued by: NWS North Platte, NE

County Deuel County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 4.4 hours before the alert went out and 131 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: 983 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

124 
WWUS83 KLBF 041621
SPSLBF

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1021 AM MDT TUE AUG 4 2015
 
NEZ056>058-041700-
DEUEL NE-KEITH NE-PERKINS NE-
1021 AM MDT TUE AUG 4 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN KEITH...SOUTHEASTERN
DEUEL AND NORTHWESTERN PERKINS COUNTIES UNTIL 1100 AM MDT...

AT 1020 AM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR JULESBURG...MOVING EAST AT 20 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BRULE...BIG SPRINGS...GOLDENEYE STATE WILDLIFE MANAGEMENT AREA...
MEGEATH AND BARTON.

THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 90 AND
117.
 
LAT...LON 4115 10237 4112 10188 4085 10195 4088 10206
      4101 10205 4100 10241
TIME...MOT...LOC 1620Z 281DEG 16KT 4105 10230 

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 10:37 PM MDT	Special Weather Statement	LBF	Keya Paha	38 min
Aug 3, 11:54 PM MDT	Special Weather Statement	LBF	Keya Paha, Rock	66 min
Aug 4, 1:44 AM MDT	Special Weather Statement	LBF	Boyd, Holt, Keya Paha, Rock	46 min
Aug 4, 2:39 AM MDT	Special Weather Statement	LBF	Boyd, Holt, Keya Paha, Rock	96 min
Aug 4, 9:54 AM MDT	Special Weather Statement	LBF	Keith	51 min
Aug 4, 11:30 AM MDT	Special Weather Statement	LBF	Chase, Perkins	45 min
Aug 4, 11:33 AM MDT	Special Weather Statement	LBF	Lincoln	42 min
Aug 4, 11:41 AM MDT	Severe Thunderstorm Warning	LBF	Chase	34 min
Aug 4, 12:01 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	29 min
Aug 4, 12:30 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	45 min
Aug 4, 1:18 PM MDT	Areal Flood Advisory	LBF	Lincoln	3 hr
Aug 4, 1:31 PM MDT	Areal Flood Advisory	LBF	Frontier, Hayes	3 hr
Aug 4, 1:57 PM MDT	Areal Flood Advisory	LBF	Lincoln	3 hr
Aug 4, 2:03 PM MDT	Special Weather Statement	LBF	Frontier	42 min

Nearby

Special Weather Statements in Nebraska, 2015 Every special weather statement in 2015

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.