Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 3, NWS Hastings, NE

September 2, 2021Harlan County, Nebraska

NWS Hastings, NE issued this tornado warning at Sep 2, 2021, 6:20 PM CDT for Harlan County, Nebraska. It was in force for 25 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: Sep 2, 2021, 6:20 PM CDT (23:20 UTC)
Expired: Sep 2, 2021, 6:45 PM CDT
In force: 25 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Harlan County, NE

The radar

The Grand Island radar (KUEX), 81 km from the middle of the area, began a volume at 23:24 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
Sep 2, 5:27 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 140 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: 2 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 733 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

196 
WFUS53 KGID 022320
TORGID
NEC083-022345-
/O.NEW.KGID.TO.W.0003.210902T2320Z-210902T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Hastings NE
620 PM CDT Thu Sep 2 2021

The National Weather Service in Hastings has issued a

* Tornado Warning for...
  Northeastern Harlan County in south central Nebraska...

* Until 645 PM CDT.
    
* At 620 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles west of Ragan, or 11 miles south of Holdrege,
  moving east at 15 mph.

  HAZARD...Tornado.

  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.

* Locations impacted include...
  Huntley and Ragan.

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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Hastings.

&&

LAT...LON 4022 9949 4033 9949 4035 9926 4018 9926
TIME...MOT...LOC 2320Z 269DEG 12KT 4027 9942 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Thies

1 follow-up statement

368 
WWUS53 KGID 022344
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
644 PM CDT Thu Sep 2 2021

NEC083-022354-
/O.EXP.KGID.TO.W.0003.000000T0000Z-210902T2345Z/
Harlan NE-
644 PM CDT Thu Sep 2 2021

...THE TORNADO WARNING FOR NORTHEASTERN HARLAN COUNTY WILL EXPIRE AT
645 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A Tornado Watch remains in effect until midnight CDT for south
central Nebraska.

LAT...LON 4022 9949 4033 9949 4035 9926 4018 9926
TIME...MOT...LOC 2344Z 269DEG 12KT 4027 9932 

$$

Thies

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 5:52 PM CDT	Tornado Warning	GID	Kearney, Phelps	23 min
Sep 2, 6:14 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Kearney, Phelps	46 min
Sep 2, 6:48 PM CDT	Areal Flood Advisory	GID	Buffalo, Dawson, Gosper, Phelps	3 hr
Sep 2, 6:49 PM CDT	Special Weather Statement	GID	Harlan	26 min

Nearby

Tornado Warnings in Nebraska, 2021 Every tornado warning in 2021 Tornadoes 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.