Alert archive / Nebraska / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 277, NWS Hastings, NE

July 21, 2019Phelps County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 21, 2019, 4:09 AM CDT for Phelps County, Nebraska. It was in force for 20 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
Jul 21, 2019, 4:09 AM CDT (09:09 UTC)
Expired
Jul 21, 2019, 4:29 AM CDT
In force
20 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Phelps County, NE

The radar

The Grand Island radar (KUEX), 85 km from the middle of the area, began a volume at 09:12 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, 9.2 hours before the alert went out and 121 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 2019-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 522 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 2019-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 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
522 J/kg
Mixed-layer CIN
-396 J/kg
Mixed-layer LCL
882 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 2:30 AM CDTSpecial Weather StatementGIDHoward30 min
Jul 21, 2:52 AM CDTSpecial Weather StatementGIDHall23 min
Jul 21, 2:54 AM CDTSpecial Weather StatementGIDYork36 min
Jul 21, 3:06 AM CDTSpecial Weather StatementGIDFillmore24 min
Jul 21, 3:13 AM CDTSevere Thunderstorm WarningGIDFillmore, York25 min
Jul 21, 3:17 AM CDTSpecial Weather StatementGIDMerrick28 min
Jul 21, 3:45 AM CDTAreal Flood AdvisoryGIDBuffalo, Dawson, Hall, Howard, Sherman5 hr
Jul 21, 3:54 AM CDTSpecial Weather StatementGIDGosper36 min
Jul 21, 3:57 AM CDTSpecial Weather StatementGIDHall33 min
Jul 21, 4:34 AM CDTSpecial Weather StatementGIDHall26 min
Jul 21, 4:44 AM CDTSpecial Weather StatementGIDKearney31 min
Jul 21, 5:00 AM CDTAreal Flood AdvisoryGIDBuffalo3 hr
Jul 21, 7:03 AM CDTAreal Flood AdvisoryGIDFillmore, Hamilton, Merrick, Polk, York6 hr
Jul 21, 8:50 AM CDTAreal Flood AdvisoryGIDBuffalo, Dawson, Hall, Howard, Sherman3 hr
Jul 21, 8:57 AM CDTAreal Flood AdvisoryGIDFillmore, Thayer6 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2019Every severe thunderstorm warning 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.