Alert archive / Nebraska / Special Weather Statements in 2018

Special Weather Statement, NWS North Platte, NE

August 5, 2018Holt County, Nebraska

NWS North Platte, NE issued this special weather statement at Aug 5, 2018, 10:07 AM CDT for Holt County, Nebraska. It was in force for 38 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 5, 2018, 10:07 AM CDT (15:07 UTC)
Expired
Aug 5, 2018, 10:45 AM CDT
In force
38 min
Issued by
NWS North Platte, NE

County Holt County, NE

The radar

The North Platte radar (KLNX), 141 km from the middle of the area, began a volume at 15:09 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, 3.1 hours before the alert went out and 182 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 2018-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 934 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2018-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.19395878Sfc1 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
934 J/kg
Mixed-layer CIN
-370 J/kg
Mixed-layer LCL
2271 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS North Platte, NE wrote its last area forecast discussion before this special weather statement went out at Aug 5, 6:31 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Aug 5, 6:31 AM CDT, 3 hours 36 minutes before
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Hazardous weather outlook, Aug 5, 8:08 AM CDT, 1 hour 59 minutes before
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In the hours before

Special weather statement, Aug 5, 8:11 AM CDT, 1 hour 56 minutes before
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Special weather statement, Aug 5, 8:50 AM CDT, 1 hour 17 minutes before
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Special weather statement, Aug 5, 8:57 AM CDT, 1 hour 10 minutes before
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Special weather statement, Aug 5, 10:07 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 8:11 AM CDTSpecial Weather StatementLBFHolt, Loup49 min
Aug 5, 8:50 AM CDTSpecial Weather StatementLBFBoyd25 min
Aug 5, 8:57 AM CDTSpecial Weather StatementLBFGarfield, Holt, Wheeler48 min
Aug 5, 4:49 PM CDTSpecial Weather StatementLBFGarden26 min
Aug 5, 5:01 PM CDTSevere Thunderstorm WarningLBFArthur, Garden29 min
Aug 5, 5:29 PM CDTSpecial Weather StatementLBFArthur31 min
Aug 5, 5:44 PM CDTSpecial Weather StatementLBFChase31 min
Aug 5, 5:51 PM CDTSevere Thunderstorm WarningLBFArthur, Keith39 min
Aug 5, 6:28 PM CDTSpecial Weather StatementLBFKeith32 min

Nearby

Special Weather Statements in Nebraska, 2018Every special weather statement in 2018

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.