Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 54, NWS North Platte, NE

June 15, 2021Arthur County, Keith County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 15, 2021, 7:49 AM MDT for Arthur County, Keith County, McPherson 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 outline as issued.

The facts

Issued
Jun 15, 2021, 7:49 AM MDT (13:49 UTC)
Expired
Jun 15, 2021, 8:30 AM MDT
In force
41 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Arthur County, NE, Keith County, NE, McPherson County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 13:51 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 12:00Z, 1.8 hours before the alert went out and 88 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 2021-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1489 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2021-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
1489 J/kg
Mixed-layer CIN
-188 J/kg
Mixed-layer LCL
1848 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

548 
WUUS53 KLBF 151349
SVRLBF
NEC005-101-117-151430-
/O.NEW.KLBF.SV.W.0054.210615T1349Z-210615T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
849 AM CDT Tue Jun 15 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Arthur County in west central Nebraska...
  Northeastern Keith County in southwestern Nebraska...
  Southwestern McPherson County in west central Nebraska...

* Until 930 AM CDT/830 AM MDT/.

* At 849 AM CDT/749 AM MDT/, a severe thunderstorm was located 7
  miles east of Arthur, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Bucktail Lake.

This includes Highway 92 between mile markers 168 and 174.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4163 10163 4165 10154 4136 10128 4127 10157
TIME...MOT...LOC 1349Z 329DEG 18KT 4161 10156 

HAIL...1.25IN
WIND...60MPH
 
$$

CDC
2 follow-up statements
328 
WWUS53 KLBF 151411
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
911 AM CDT Tue Jun 15 2021

NEC005-101-117-151430-
/O.CON.KLBF.SV.W.0054.000000T0000Z-210615T1430Z/
Arthur NE-Keith NE-McPherson NE-
911 AM CDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM
CDT/830 AM MDT/ FOR SOUTHEASTERN ARTHUR...NORTHEASTERN KEITH AND
SOUTHWESTERN MCPHERSON COUNTIES...

At 911 AM CDT/811 AM MDT/, a severe thunderstorm was located 11 miles
east of Arthur, moving southeast at 20 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Bucktail Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4157 10162 4156 10147 4136 10128 4127 10157
TIME...MOT...LOC 1411Z 329DEG 18KT 4152 10148 

HAIL...1.00IN
WIND...<50MPH
 
$$

CDC
390 
WWUS53 KLBF 151427
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
927 AM CDT Tue Jun 15 2021

NEC005-101-117-151437-
/O.EXP.KLBF.SV.W.0054.000000T0000Z-210615T1430Z/
Arthur NE-Keith NE-McPherson NE-
927 AM CDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ARTHUR...
NORTHEASTERN KEITH AND SOUTHWESTERN MCPHERSON COUNTIES WILL EXPIRE AT
930 AM CDT/830 AM MDT/...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

LAT...LON 4157 10162 4156 10147 4136 10128 4127 10157
TIME...MOT...LOC 1427Z 329DEG 18KT 4147 10144 

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 3:32 AM MDTSpecial Weather StatementLBFSheridan43 min
Jun 15, 3:57 AM MDTSevere Thunderstorm WarningLBFSheridan48 min
Jun 15, 4:48 AM MDTSevere Thunderstorm WarningLBFCherry, Sheridan57 min
Jun 15, 5:09 AM MDTSevere Thunderstorm WarningLBFSheridan66 min
Jun 15, 6:08 AM MDTSpecial Weather StatementLBFSheridan52 min
Jun 15, 7:26 AM MDTSpecial Weather StatementLBFArthur49 min
Jun 15, 7:57 AM MDTSpecial Weather StatementLBFSheridan48 min
Jun 15, 8:35 AM MDTSpecial Weather StatementLBFLincoln40 min
Jun 15, 1:40 PM MDTHeat AdvisoryLBFBlaine, Boyd, Brown, Chase, Cherry, Custer and 15 more53 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021Every severe thunderstorm warning in 2021

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.