Alert archive / Nebraska / Tornado Warnings in 2020

Tornado Warning 13, NWS North Platte, NE

July 10, 2020Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 10, 2020, 6:53 PM MDT for Cherry County, Nebraska. It was in force for 52 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 10, 2020, 6:53 PM MDT (00:53 UTC)
Expired
Jul 10, 2020, 7:45 PM MDT
In force
52 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Observed
Hail
2.5 in

County Cherry County, NE

The radar

The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 00:55 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.

What was reported inside it

TimeReportWhereRemark
Jul 10, 7:15 PM MDTHAIL 1.755 Nnw Merriman, NE
Jul 10, 7:15 PM MDTHAIL 25 Nnw Merriman, NE
Jul 10, 7:23 PM MDTHAIL 2Ne Merriman, NEREPORTED VIA TWITTER
Jul 10, 7:23 PM MDTHAIL 2Ne Merriman, NEREPORTED VIA TWITTER.
Jul 10, 7:39 PM MDTHAIL 2.53 Wsw Eli, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 0.9 hours before the alert went out and 154 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, Rapid City, SD at 00:00Z on 2020-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 235 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, Rapid City, SD at 00:00Z on 2020-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939587897Sfc1 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
235 J/kg
Mixed-layer CIN
-359 J/kg
Mixed-layer LCL
1287 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

816 
WFUS53 KLBF 110053
TORLBF
NEC031-110145-
/O.NEW.KLBF.TO.W.0013.200711T0053Z-200711T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
653 PM MDT Fri Jul 10 2020

The National Weather Service in North Platte has issued a

* Tornado Warning for...
  Northwestern Cherry County in north central Nebraska...

* Until 745 PM MDT.

* At 653 PM MDT, a confirmed tornado was located over Swett, or 12
  miles west of Martin, moving southeast at 40 mph.

  HAZARD...Damaging tornado and tennis ball size hail.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* The tornado will be near...
  Merriman around 725 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Highway 61 Crossing The Niobrara River, Irwin and Intersection of
Highway 20 and Irwin Road.

This includes the following highways...
 Highway 20 between mile markers 118 and 149.
 Highway 61 between mile markers 213 and 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4300 10200 4299 10154 4286 10133 4268 10195
      4300 10201
TIME...MOT...LOC 0053Z 314DEG 36KT 4314 10197 

TORNADO...OBSERVED
HAIL...2.50IN

$$

CDC
2 follow-up statements
037 
WWUS53 KLBF 110118
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
718 PM MDT Fri Jul 10 2020

NEC031-110145-
/O.CON.KLBF.TO.W.0013.000000T0000Z-200711T0145Z/
Cherry NE-
718 PM MDT Fri Jul 10 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR
NORTHWESTERN CHERRY COUNTY...
    
At 717 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Merriman, or 13 miles south of Martin, moving
southeast at 45 mph.

HAZARD...Tornado and tennis ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Cherry County, including the following locations...
Highway 61 Crossing The Niobrara River, Irwin and Intersection of
Highway 20 and Irwin Road.

This includes the following highways...
 Highway 20 between mile markers 118 and 149.
 Highway 61 between mile markers 213 and 231.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4300 10200 4299 10154 4286 10133 4268 10195
      4300 10201
TIME...MOT...LOC 0117Z 308DEG 38KT 4298 10169 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

CDC
437 
WWUS53 KLBF 110142
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
742 PM MDT Fri Jul 10 2020

NEC031-110152-
/O.EXP.KLBF.TO.W.0013.000000T0000Z-200711T0145Z/
Cherry NE-
742 PM MDT Fri Jul 10 2020

...THE TORNADO WARNING FOR NORTHWESTERN CHERRY COUNTY WILL EXPIRE AT
745 PM MDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 100 AM MDT for
north central Nebraska.

LAT...LON 4300 10200 4299 10154 4286 10133 4268 10195
      4300 10201
TIME...MOT...LOC 0142Z 314DEG 36KT 4281 10145 

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 6:56 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan49 min
Jul 10, 7:01 PM MDTSevere Thunderstorm WarningLBFSheridan27 min
Jul 10, 7:46 PM MDTSevere Thunderstorm WarningLBFCherry59 min
Jul 10, 8:10 PM MDTFlash Flood WarningLBFCherry3 hr
Jul 10, 8:14 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha, Rock61 min
Jul 10, 8:39 PM MDTSpecial Weather StatementLBFBoyd51 min
Jul 10, 8:46 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker, Thomas59 min
Jul 10, 9:09 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry, Thomas51 min
Jul 10, 9:13 PM MDTAreal Flood AdvisoryLBFBoyd, Brown, Holt, Keya Paha, Rock3 hr
Jul 10, 9:21 PM MDTSpecial Weather StatementLBFBrown, Garfield, Holt, Rock, Wheeler54 min
Jul 10, 9:24 PM MDTSevere Thunderstorm WarningLBFCherry, Hooker, Thomas51 min
Jul 10, 9:54 PM MDTSpecial Weather StatementLBFCherry51 min
Jul 10, 10:10 PM MDTSevere Thunderstorm WarningLBFCherry65 min
Jul 10, 10:15 PM MDTSpecial Weather StatementLBFGarfield, Loup, Wheeler45 min
Jul 10, 10:18 PM MDTSpecial Weather StatementLBFLogan, Thomas57 min
Jul 10, 10:44 PM MDTSpecial Weather StatementLBFLincoln46 min
Jul 10, 11:02 PM MDTSevere Thunderstorm WarningLBFCherry43 min
Jul 10, 11:19 PM MDTAreal Flood AdvisoryLBFBrown, Cherry3 hr
Jul 10, 11:39 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry, Thomas51 min
Jul 11, 12:02 AM MDTSevere Thunderstorm WarningLBFBlaine, Thomas43 min
Jul 11, 12:30 AM MDTSevere Thunderstorm WarningLBFBlaine, Custer45 min
Jul 11, 1:03 AM MDTSevere Thunderstorm WarningLBFCuster42 min
Jul 11, 1:22 AM MDTSpecial Weather StatementLBFCuster38 min
Jul 11, 1:32 AM MDTSevere Thunderstorm WarningLBFCuster43 min

Nearby

Tornado Warnings in Nebraska, 2020Every tornado warning in 2020Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.