Alert archive / Nebraska / Tornado Warnings in 2021

Tornado Warning 14, NWS Hastings, NE

December 15, 2021Polk County, York County, Nebraska

NWS Hastings, NE issued this tornado warning at Dec 15, 2021, 2:45 PM CST for Polk County, York County, Nebraska. It was in force for 15 min. 1 report 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: Dec 15, 2021, 2:45 PM CST (20:45 UTC)
Expired: Dec 15, 2021, 3:00 PM CST
In force: 15 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Polk County, NE, York County, NE

The radar

The Omaha radar (KOAX), 100 km from the middle of the area, began a volume at 20:48 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

Time	Report	Where	Remark
Dec 15, 3:00 PM CST	TSTM WND GST 60	1 Ne Gresham, NE

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 15, 1:23 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.8 hours before the alert went out and 99 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2165 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 384 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

363 
WFUS53 KGID 152045
TORGID
NEC143-185-152100-
/O.NEW.KGID.TO.W.0014.211215T2045Z-211215T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Hastings NE
245 PM CST Wed Dec 15 2021

The National Weather Service in Hastings has issued a

* Tornado Warning for...
  Northeastern York County in east central Nebraska...
  Eastern Polk County in east central Nebraska...

* Until 300 PM CST.
    
* At 245 PM CST, a severe thunderstorm capable of producing a tornado
  was located near York, moving northeast at 95 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.

* This dangerous storm will be near...
  Gresham around 255 PM CST.
  Shelby around 300 PM CST.

This includes Interstate 80 between mile markers 354 and 356.
 
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 4081 9756 4084 9766 4138 9741 4139 9737
      4090 9737
TIME...MOT...LOC 2045Z 205DEG 83KT 4090 9755 

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

$$

Mangels

2 follow-up statements

914 
WWUS53 KGID 152047
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
247 PM CST Wed Dec 15 2021

NEC143-185-152100-
/O.CON.KGID.TO.W.0014.000000T0000Z-211215T2100Z/
York NE-Polk NE-
247 PM CST Wed Dec 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM CST FOR
NORTHEASTERN YORK AND EASTERN POLK COUNTIES...
    
At 247 PM CST, a severe thunderstorm capable of producing a tornado
was located near Waco, or 7 miles northeast of York, moving northeast
at 95 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.

This dangerous storm will be near...
  Shelby around 300 PM CST.

Other locations impacted by this tornadic thunderstorm include
Thayer.

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 4083 9752 4091 9756 4138 9741 4139 9737
      4090 9737
TIME...MOT...LOC 2047Z 205DEG 83KT 4095 9752 

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

$$

Mangels

915 
WWUS53 KGID 152058
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
258 PM CST Wed Dec 15 2021

NEC143-185-152108-
/O.EXP.KGID.TO.W.0014.000000T0000Z-211215T2100Z/
York NE-Polk NE-
258 PM CST Wed Dec 15 2021

...THE TORNADO WARNING FOR NORTHEASTERN YORK AND EASTERN POLK
COUNTIES WILL EXPIRE AT 300 PM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 800 PM CST for east central
Nebraska.

LAT...LON 4083 9752 4091 9756 4138 9741 4139 9737
      4090 9737
TIME...MOT...LOC 2058Z 205DEG 83KT 4115 9740 

$$

Mangels

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 15, 12:54 PM CST	Severe Thunderstorm Warning Considerable damage threat	GID	Franklin, Furnas, Harlan, Kearney, Phelps, Webster	36 min
Dec 15, 1:21 PM CST	Severe Thunderstorm Warning Considerable damage threat	GID	Adams, Buffalo, Clay, Franklin, Hall, Hamilton and 7 more	54 min
Dec 15, 1:30 PM CST	Tornado Warning	GID	Adams, Franklin, Webster	15 min
Dec 15, 1:41 PM CST	Dust Storm Warning	GID	Buffalo, Dawson, Furnas, Gosper, Harlan, Kearney and 1 more	94 min
Dec 15, 1:43 PM CST	Tornado Warning	GID	Adams	17 min
Dec 15, 1:45 PM CST	Tornado Warning	GID	Adams, Clay, Webster	15 min
Dec 15, 1:45 PM CST	Tornado Warning	GID	Buffalo, Hall, Howard	15 min
Dec 15, 1:57 PM CST	Tornado Warning	GID	Adams, Hall, Hamilton, Merrick	18 min
Dec 15, 2:03 PM CST	Tornado Warning	GID	Clay, Hamilton	12 min
Dec 15, 2:08 PM CST	Severe Thunderstorm Warning Considerable damage threat	GID	Clay, Fillmore, Greeley, Hall, Hamilton, Howard and 7 more	52 min
Dec 15, 2:14 PM CST	Tornado Warning	GID	Hamilton, Merrick, Polk, York	16 min
Dec 15, 2:17 PM CST	Blowing Dust Warning	GID	Franklin, Furnas, Harlan, Nuckolls, Thayer, Webster	6 hr
Dec 15, 2:22 PM CST	Severe Thunderstorm Warning Destructive damage threat	GID	Hamilton, Howard, Merrick, Nance, Polk, York	38 min
Dec 15, 2:32 PM CST	Tornado Warning	GID	Hamilton, Merrick, Nance, Polk	13 min
Dec 15, 2:39 PM CST	Tornado Warning	GID	Nance	9 min
Dec 15, 2:43 PM CST	Tornado Warning	GID	Merrick, Polk	17 min
Dec 15, 4:31 PM CST	Snow Squall Warning	GID	Buffalo, Dawson, Gosper, Phelps	59 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.