Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 296, NWS North Platte, NE

August 7, 2023Arthur County, Grant County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 7, 2023, 6:02 PM MDT for Arthur County, Grant County, McPherson County, Nebraska. It was in force for 43 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: Aug 7, 2023, 6:02 PM MDT (00:02 UTC)
Expired: Aug 7, 2023, 6:45 PM MDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.75 in
Wind: 60.0 mph

Counties Arthur County, NE, Grant County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 82 km from the middle of the area, began a volume at 00:04 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.

Issued	Product	Office	Lasted
Aug 7, 2:03 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 97 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 418 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.2

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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 7, 5:41 PM MDT, 21 minutes earlier.

Area forecast discussion, Aug 7, 5:41 PM MDT, 21 minutes before

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Hazardous weather outlook, Aug 7, 9:05 AM MDT, 8 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service North Platte NE
1005 AM CDT Mon Aug 7 2023

NEZ004>010-022>029-035>038-056>059-069>071-094-081515-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-Grant-
Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-Logan-
Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
1005 AM CDT Mon Aug 7 2023 /905 AM MDT Mon Aug 7 2023/

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

.DAY ONE...Today and tonight.

Scattered strong to severe thunderstorms are possible across the
area this afternoon into the evening, especially across the southern
Panhandle and southwest Nebraska. These storms will be capable of
producing large to very large hail (two inch diameter or larger) and
damaging wind. A tornado or two cannot be ruled out, however, the
greatest tornado threat area remains limited to the southern
Panhandle and southwest Nebraska.

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

Scattered severe thunderstorms are possible across much of western
and north central Nebraska again Tuesday afternoon into the evening.
Large to very large hail (two inch diameter or larger), damaging
winds and locally heavy rainfall are the primary threats. However, a
couple of tornadoes cannot be ruled out for areas across the southern
Panhandle into southwest Nebraska. As the severe storms track south
and east into portions of central/north central Nebraska through the
evening, thunderstorms may form a complex with an increased threat
for damaging winds through the late evening into the night.

Outside of any lingering showers and embedded thunderstorms from
Tuesday's activity on Wednesday morning, the bulk of the day on
Wednesday appears to remain dry. However, sporadic scattered
precipitation chances quickly return in the afternoon/evening hours
for each day beginning Thursday into the weekend. At this time, the
severe threat during this period remains uncertain.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report hail of any size, damaging
thunderstorm wind gusts as well as flooding.

In the hours before

Local storm report, Aug 7, 5:09 PM MDT, 53 minutes before

Preliminary Local Storm Report
National Weather Service North Platte NE
609 PM CDT Mon Aug 7 2023

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

0555 PM     Hail             4 W Hyannis             42.00N 101.84W
08/07/2023  E1.00 inch       Grant              NE   Public

            Public reports heavy rain with penny to
            quarter sized hail, time estimated by radar.

&&

ARV

Local storm report, Aug 7, 5:11 PM MDT, 51 minutes before

Preliminary Local Storm Report
National Weather Service North Platte NE
611 PM CDT Mon Aug 7 2023

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

0600 PM     Hail             5 WSW Hyannis           41.97N 101.86W
08/07/2023  E1.75 inch       Grant              NE   Public

            Public reports golf ball hail that was
            oblong, at the time hail had occurred for
            over 10 or more minutes.

&&

ARV

Special weather statement, Aug 7, 5:18 PM MDT, 44 minutes before

Special Weather Statement
National Weather Service North Platte NE
518 PM MDT Mon Aug 7 2023

NEZ004-072345-
Sheridan NE-
518 PM MDT Mon Aug 7 2023

...A strong thunderstorm will impact portions of southeastern
Sheridan County through 545 PM MDT...

At 518 PM MDT, Doppler radar was tracking a strong thunderstorm 22
miles south of Rushville, moving southeast at 25 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel 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...
Smith Lake State Wildlife Management Area, Wolf Hill and Argo Hill.

This includes Highway 250 between mile markers 22 and 28.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4240 10251 4250 10236 4237 10204 4230 10204
      4219 10224
TIME...MOT...LOC 2318Z 304DEG 23KT 4239 10237

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

Brown

Special weather statement, Aug 7, 5:21 PM MDT, 41 minutes before

Special Weather Statement
National Weather Service North Platte NE
621 PM CDT Mon Aug 7 2023

NEZ070-071-080000-
Frontier NE-Hayes NE-
621 PM CDT Mon Aug 7 2023

...A strong thunderstorm will impact portions of western Frontier and
southeastern Hayes Counties through 700 PM CDT...

At 620 PM CDT, Doppler radar was tracking a strong thunderstorm over
Hayes Center, moving east at 30 mph.

HAZARD...Wind gusts up to 50 mph and nickel 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...
Hayes Center and Quick.

This includes Highway 83 between mile markers 32 and 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

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

&&

LAT...LON 4040 10091 4051 10108 4067 10068 4042 10059
TIME...MOT...LOC 2320Z 255DEG 25KT 4049 10099

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Jacobs

Local storm report, Aug 7, 5:40 PM MDT, 22 minutes before

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Special weather statement, Aug 7, 5:44 PM MDT, 18 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 6:30 PM MDT	Special Weather Statement	LBF	Keith	30 min
Aug 7, 6:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Sheridan	49 min
Aug 7, 7:00 PM MDT	Special Weather Statement	LBF	Keith	45 min
Aug 7, 7:16 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	44 min
Aug 7, 7:18 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	42 min
Aug 7, 7:40 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	50 min
Aug 7, 7:42 PM MDT	Special Weather Statement	LBF	Lincoln	48 min
Aug 7, 7:52 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	38 min
Aug 7, 7:58 PM MDT	Special Weather Statement	LBF	Sheridan	47 min
Aug 7, 8:01 PM MDT	Special Weather Statement	LBF	Sheridan	44 min
Aug 7, 8:26 PM MDT	Areal Flood Advisory	LBF	Custer, Lincoln	57 min
Aug 7, 8:29 PM MDT	Special Weather Statement	LBF	Lincoln	46 min
Aug 8, 3:39 PM MDT	Special Weather Statement	LBF	Garden	51 min
Aug 8, 3:50 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Garden, Sheridan	40 min
Aug 8, 4:25 PM MDT	Areal Flood Advisory	LBF	Garden, Sheridan	3 hr
Aug 8, 4:28 PM MDT	Severe Thunderstorm Warning	LBF	Garden	47 min
Aug 8, 4:32 PM MDT	Special Weather Statement	LBF	Sheridan	43 min
Aug 8, 5:01 PM MDT	Areal Flood Advisory	LBF	Garden, Sheridan	2 hr
Aug 8, 5:10 PM MDT	Severe Thunderstorm Warning	LBF	Garden	50 min
Aug 8, 5:18 PM MDT	Special Weather Statement	LBF	Sheridan	42 min
Aug 8, 5:19 PM MDT	Special Weather Statement	LBF	Deuel	26 min
Aug 8, 5:58 PM MDT	Special Weather Statement	LBF	Sheridan	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2023 Every 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.