Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 170, NWS Hastings, NE

June 20, 2014Greeley County, Howard County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 20, 2014, 3:49 PM CDT for Greeley County, Howard County, Nebraska. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 20, 2014, 3:49 PM CDT (20:49 UTC)
Expired
Jun 20, 2014, 4:30 PM CDT
In force
41 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Greeley County, NE, Howard County, NE

The radar

The Grand Island radar (KUEX), 119 km from the middle of the area, began a volume at 20:48 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 2:20 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.8 hours before the alert went out and 176 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 2014-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 641 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 2014-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 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
641 J/kg
Mixed-layer CIN
-158 J/kg
Mixed-layer LCL
1345 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
301 m²/s²
Significant tornado parameter
0.0
Supercell composite
11.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 20, 12:22 PM CDT, 3 hours 27 minutes earlier.

Area forecast discussion, Jun 20, 12:22 PM CDT, 3 hours 27 minutes before
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Hazardous weather outlook, Jun 20, 3:33 PM CDT, 16 minutes before
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In the hours before

Local storm report, Jun 20, 10:57 AM CDT, 4 hours 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1057 AM CDT FRI JUN 20 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1046 AM     HAIL             6 N ARCADIA             41.51N 99.13W
06/20/2014  E0.88 INCH       VALLEY             NE   PUBLIC

&&

PFANNKUCH
Special weather statement, Jun 20, 11:11 AM CDT, 4 hours 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1111 AM CDT FRI JUN 20 2014

NEZ039>041-046-201700-
GREELEY NE-NANCE NE-VALLEY NE-SHERMAN NE-
1111 AM CDT FRI JUN 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR GREELEY...WESTERN NANCE...
SOUTHEASTERN VALLEY AND NORTHEASTERN SHERMAN COUNTIES UNTIL 1200 PM
CDT...

AT 1109 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
BETWEEN NORTH LOUP AND ORD...MOVING EAST AT 35 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ORD...GREELEY...SPALDING...GREELEY CENTER...SCOTIA...NORTH LOUP AND
WOLBACH.

LAT...LON 4141 9829 4139 9891 4161 9896 4174 9848
      4174 9834
TIME...MOT...LOC 1609Z 255DEG 31KT 4155 9883

EDDY
Local storm report, Jun 20, 11:50 AM CDT, 3 hours 59 minutes before
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Special weather statement, Jun 20, 2:27 PM CDT, 1 hour 22 minutes before
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Special weather statement, Jun 20, 2:57 PM CDT, 52 minutes before
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Special weather statement, Jun 20, 3:36 PM CDT, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 10:31 AM CDTSevere Thunderstorm WarningGIDValley44 min
Jun 20, 11:11 AM CDTSpecial Weather StatementGIDGreeley49 min
Jun 20, 11:29 AM CDTSevere Thunderstorm WarningGIDGreeley31 min
Jun 20, 2:27 PM CDTSpecial Weather StatementGIDSherman, Valley33 min
Jun 20, 2:34 PM CDTSevere Thunderstorm WarningGIDSherman, Valley41 min
Jun 20, 2:57 PM CDTSpecial Weather StatementGIDGreeley48 min
Jun 20, 3:01 PM CDTSevere Thunderstorm WarningGIDGreeley, Valley44 min
Jun 20, 3:13 PM CDTSevere Thunderstorm WarningGIDSherman, Valley47 min
Jun 20, 3:36 PM CDTSpecial Weather StatementGIDGreeley39 min
Jun 20, 4:04 PM CDTSevere Thunderstorm WarningGIDGreeley26 min
Jun 20, 4:38 PM CDTSpecial Weather StatementGIDNance37 min
Jun 20, 5:17 PM CDTSpecial Weather StatementGIDHoward28 min
Jun 20, 5:40 PM CDTSevere Thunderstorm WarningGIDHall, Howard, Merrick50 min
Jun 20, 5:57 PM CDTSevere Thunderstorm WarningGIDHall, Howard33 min
Jun 20, 5:59 PM CDTSpecial Weather StatementGIDSherman31 min
Jun 20, 6:12 PM CDTSevere Thunderstorm WarningGIDHoward, Sherman48 min
Jun 20, 6:24 PM CDTSevere Thunderstorm WarningGIDHall, Howard, Merrick51 min
Jun 20, 6:53 PM CDTSevere Thunderstorm WarningGIDHall, Hamilton, Merrick52 min
Jun 20, 6:55 PM CDTSevere Thunderstorm WarningGIDHall, Howard35 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014Every severe thunderstorm warning 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.