Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 155, NWS Hastings, NE

July 10, 2023Greeley County, Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 10, 2023, 6:04 PM CDT for Greeley County, Valley 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
Jul 10, 2023, 6:04 PM CDT (23:04 UTC)
Expired
Jul 10, 2023, 6:45 PM CDT
In force
41 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Greeley County, NE, Valley County, NE

The radar

The Grand Island radar (KUEX), 141 km from the middle of the area, began a volume at 23:03 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
Jul 10, 3:12 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.1 hours before the alert went out and 162 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 2023-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 751 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 2023-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
751 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
51 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

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 Jul 10, 3:34 PM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, Jul 10, 3:34 PM CDT, 2 hours 30 minutes before
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Hazardous weather outlook, Jul 10, 5:03 PM CDT, 1 hour 1 minute before
Hazardous Weather Outlook...UPDATED
National Weather Service Hastings NE
503 PM CDT Mon Jul 10 2023

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
112215-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
503 PM CDT Mon Jul 10 2023

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...This evening and tonight.

The entire outlook area is included in either a Slight or Enhanced
Risk for severe thunderstorms, with this threat lasting through at
least the 10 PM to Midnight time frame for parts of the area.
Generally speaking, storms will develop into the outlook area
from both the north and the west with time this evening, perhaps
eventually merging into a larger storm complex. The main threats
with the most intense storms will be hail up to around the size of
golf balls, wind gusts up to around 70 MPH and locally heavy
rainfall of perhaps at least 1 to 2 inches in a short time. An
isolated tornado cannot be entirely ruled out, but is certainly
not the primary hazard.

Eventually tonight, all thunderstorm activity will depart off to
the south and southeast, and odds favor the entire outlook area
being thunderstorm-free by around 2 AM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

For Tuesday late afternoon and evening, the majority of the
outlook area is included in either a Marginal or Slight Risk for
severe thunderstorms, with this threat favoring Nebraska areas
more so than north central Kansas. Large hail and strong,
damaging winds will be the main threats with any possible severe
storms, although the likelihood of storm development and coverage
of storms is still somewhat in question.

Also on Tuesday, heat index values during the afternoon are
expected to reach at least 100 degrees in southern portions of the
outlook area, particularly within north central Kansas along with
Thayer and Nuckolls counties in Nebraska. Similar to slightly
higher heat index readings are expected in these same areas
Wednesday afternoon, including the possibility for more dangerous
readings of at least 105 degrees, particularly within parts of
Rooks, Osborne, Mitchell, Jewell, Nuckolls and Thayer counties.

Wednesday through Sunday, periodic thunderstorm chances remain in
the forecast Wednesday through Sunday, but too many uncertainties
exist to confidently pin down details with timing, location, and
any possible threat for severe thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any possible instances of hail,
wind gusts in excess of 50 MPH, localized flooding or anything
else noteworthy.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

Pfannkuch

In the hours before

Special weather statement, Jul 10, 5:31 PM CDT, 33 minutes before
Special Weather Statement
National Weather Service Hastings NE
531 PM CDT Mon Jul 10 2023

NEZ039-102300-
Valley NE-
531 PM CDT Mon Jul 10 2023

...A strong thunderstorm will impact portions of northern Valley
County through 600 PM CDT...

At 531 PM CDT, Doppler radar was tracking a strong thunderstorm over
Burwell, moving southeast at 30 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Elyria and Fort Hartsuff State Park.

It is possible that this storm might remain primarily to the north
of Valley County, but if it slips south and intensifies then a
Severe Thunderstorm Warning may become necessary.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
central Nebraska.

&&

LAT...LON 4174 9875 4161 9875 4170 9921 4174 9921
TIME...MOT...LOC 2231Z 292DEG 28KT 4177 9914

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Pfannkuch
Special weather statement, Jul 10, 5:53 PM CDT, 11 minutes before
Special Weather Statement
National Weather Service Hastings NE
553 PM CDT Mon Jul 10 2023

NEZ039-040-102330-
Valley NE-Greeley NE-
553 PM CDT Mon Jul 10 2023

...Strong thunderstorms will impact portions of northern Greeley and
northeastern Valley Counties through 630 PM CDT...

At 551 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Bartlett to near Fort Hartsuff
State Park. Movement was southeast at 35 mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Spalding.

For now, the most intense portion of these storms are focused just
north of Valley and Greeley counties. However, if these storms
maintain their intensity and track over the next half hour, a Severe
Thunderstorm Warning may become necessary for parts of the area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
central Nebraska.

&&

LAT...LON 4156 9836 4167 9897 4174 9895 4174 9833
TIME...MOT...LOC 2251Z 298DEG 30KT 4192 9867 4171 9891

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Pfannkuch

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 5:31 PM CDTSpecial Weather StatementGIDValley29 min
Jul 10, 5:53 PM CDTSpecial Weather StatementGIDGreeley37 min
Jul 10, 6:30 PM CDTSpecial Weather StatementGIDSherman45 min
Jul 10, 6:59 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2023Every severe thunderstorm warning in 2023

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.