Alert archive / Nebraska / Special Weather Statements in 2014

Special Weather Statement, NWS Cheyenne, WY

July 11, 2014Morrill County, Nebraska

NWS Cheyenne, WY issued this special weather statement at Jul 11, 2014, 2:39 AM MDT for Morrill County, Nebraska. It was in force for 51 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
Jul 11, 2014, 2:39 AM MDT (08:39 UTC)
Expired
Jul 11, 2014, 3:30 AM MDT
In force
51 min
Issued by
NWS Cheyenne, WY

County Morrill County, NE

The radar

The North Platte radar (KLNX), 182 km from the middle of the area, began a volume at 08:39 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 00:00Z, 8.7 hours before the alert went out and 194 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 00:00Z on 2014-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1498 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 00:00Z on 2014-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
1498 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
1666 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

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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 Cheyenne, WY wrote its last area forecast discussion before this special weather statement went out at Jul 10, 10:50 PM MDT, 3 hours 49 minutes earlier.

Area forecast discussion, Jul 10, 10:50 PM MDT, 3 hours 49 minutes before
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Hazardous weather outlook, Jul 10, 7:08 PM MDT, 7 hours 31 minutes before
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In the hours before

Special weather statement, Jul 10, 9:40 PM MDT, 4 hours 59 minutes before
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Special weather statement, Jul 10, 10:33 PM MDT, 4 hours 6 minutes before
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Special weather statement, Jul 11, 2:39 AM MDT, 0 minutes before
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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 1:25 PM MDTSpecial Weather StatementCYSLaramie35 min
Jul 11, 1:58 PM MDTSpecial Weather StatementCYSLaramie47 min
Jul 11, 2:19 PM MDTSpecial Weather StatementCYSGoshen26 min
Jul 11, 3:06 PM MDTSpecial Weather StatementCYSLaramie39 min
Jul 11, 4:48 PM MDTSpecial Weather StatementCYSPlatte42 min
Jul 11, 4:49 PM MDTSpecial Weather StatementCYS41 min
Jul 11, 4:51 PM MDTSpecial Weather StatementCYS39 min
Jul 10, 6:39 PM MDTSpecial Weather StatementCYSDawes51 min
Jul 10, 9:40 PM MDTSpecial Weather StatementCYSCheyenne35 min
Jul 10, 10:33 PM MDTSpecial Weather StatementCYSCheyenne, Morrill57 min
Jul 11, 2:38 PM MDTSpecial Weather StatementCYSSioux37 min
Jul 11, 3:12 PM MDTSpecial Weather StatementCYSSioux33 min
Jul 11, 3:49 PM MDTSpecial Weather StatementCYSBox Butte41 min
Jul 11, 3:58 PM MDTSevere Thunderstorm WarningCYSKimball47 min
Jul 11, 4:04 PM MDTSpecial Weather StatementCYSScotts Bluff41 min
Jul 11, 4:23 PM MDTSevere Thunderstorm WarningCYSBox Butte, Morrill, Scotts Bluff, Sioux52 min
Jul 11, 4:43 PM MDTSevere Thunderstorm WarningCYSCheyenne, Kimball47 min
Jul 11, 5:09 PM MDTSpecial Weather StatementCYSMorrill51 min
Jul 11, 5:15 PM MDTFlash Flood WarningCYSKimball6 hr
Jul 11, 5:31 PM MDTSpecial Weather StatementCYSDawes29 min
Jul 11, 5:55 PM MDTSpecial Weather StatementCYSCheyenne35 min

Nearby

Special Weather Statements in Nebraska, 2014Every special weather statement in 2014

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.