Alert archive / Iowa / Tornado Warnings in 2023

Tornado Warning 2, NWS Quad Cities, IA

January 16, 20234 counties in Iowa

NWS Quad Cities, IA issued this tornado warning at Jan 16, 2023, 2:20 PM CST for 4 counties in Iowa. It was in force for 25 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: Jan 16, 2023, 2:20 PM CST (20:20 UTC)
Expired: Jan 16, 2023, 2:45 PM CST
In force: 25 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Benton County, IA, Iowa County, IA, Johnson County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 100 km from the middle of the area, began a volume at 20:24 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.

What was reported inside it

Time	Report	Where	Remark
Jan 16, 2:24 PM CST	HAIL 1	1 Ene Homestead, IA	NICKEL TO QUARTER SIZE HAIL COVERING THE GROUND.
Jan 16, 2:25 PM CST	HAIL 0.25	Amana, IA	PEA SIZE HAIL COVERING THE GROUND.
Jan 16, 2:38 PM CST	HAIL 0.25	Cedar Rapids Municipali, IA	HAIL LASTED 3 MINUTES.
Jan 16, 2:50 PM CST	TORNADO	3 Nnw Ely, IA	BRIEF TORNADO.
Jan 16, 2:52 PM CST	HAIL 0.75	1 E Shueyville, IA	REPORT FROM MPING: DIME (0.75 IN.).

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.3 hours before the alert went out and 107 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: 783 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 343 m²/s²
0-3 km storm-relative helicity: 383 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

010 
WFUS53 KDVN 162020
TORDVN
IAC011-095-103-113-162045-
/O.NEW.KDVN.TO.W.0002.230116T2020Z-230116T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
220 PM CST Mon Jan 16 2023

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Northwestern Johnson County in east central Iowa...
  Southeastern Benton County in east central Iowa...
  Southwestern Linn County in east central Iowa...
  Northeastern Iowa County in east central Iowa...

* Until 245 PM CST.
    
* At 219 PM CST, a severe thunderstorm capable of producing a tornado
  was located over East Amana, or 13 miles southwest of Cedar Rapids,
  moving northeast at 40 mph.

  HAZARD...Tornado and quarter 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 dangerous storm will be near...
  Fairfax, Swisher, Cedar Rapids Municipal Airport and Cou Falls 
  around 230 PM CST.
  Cedar Rapids and Shueyville around 235 PM CST.

Other locations in the path of this tornadic thunderstorm include
Ely, Marion, Bertram and Palisades-Kepler State Park.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

This storm has a history of producing tornadoes.  For your safety,
seek shelter now!

&&

LAT...LON 4173 9182 4186 9195 4208 9166 4191 9147
TIME...MOT...LOC 2019Z 230DEG 33KT 4180 9180 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Gunkel

1 follow-up statement

990 
WWUS53 KDVN 162030
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
230 PM CST Mon Jan 16 2023

IAC095-162039-
/O.CAN.KDVN.TO.W.0002.000000T0000Z-230116T2045Z/
Iowa IA-
230 PM CST Mon Jan 16 2023

...THE TORNADO WARNING FOR NORTHEASTERN IOWA COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4177 9175 4192 9187 4208 9166 4191 9147
TIME...MOT...LOC 2029Z 230DEG 33KT 4186 9170 

$$

IAC011-103-113-162045-
/O.CON.KDVN.TO.W.0002.000000T0000Z-230116T2045Z/
Johnson IA-Benton IA-Linn IA-
230 PM CST Mon Jan 16 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CST FOR
NORTHWESTERN JOHNSON...SOUTHEASTERN BENTON AND SOUTHWESTERN LINN
COUNTIES...
    
At 229 PM CST, a severe thunderstorm capable of producing a tornado
was located over Swisher, or 7 miles south of Cedar Rapids, moving
northeast at 40 mph.

HAZARD...Tornado and quarter 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 dangerous storm will be near...
  Cedar Rapids around 235 PM CST.
  Ely around 240 PM CST.

Other locations in the path of this tornadic thunderstorm include
Bertram, Palisades-Kepler State Park and Marion.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

This storm has a history of producing tornadoes.  Seek shelter now!

&&

LAT...LON 4177 9175 4192 9187 4208 9166 4191 9147
TIME...MOT...LOC 2029Z 230DEG 33KT 4186 9170 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Gunkel

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 16, 1:56 PM CST	Special Weather Statement	DVN	Iowa	34 min
Jan 16, 2:01 PM CST	Tornado Warning	DVN	Benton, Iowa, Johnson	29 min
Jan 16, 2:39 PM CST	Tornado Warning	DVN	Jones, Linn	36 min
Jan 16, 3:07 PM CST	Tornado Warning	DVN	Cedar, Jones, Linn	23 min

Nearby

Tornado Warnings in Iowa, 2023 Every tornado warning in 2023 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.