Alert archive / Iowa / Tornado Warnings in 2020

Tornado Warning 4, NWS Quad Cities, IA

March 28, 2020Benton County, Buchanan County, Iowa

NWS Quad Cities, IA issued this tornado warning at Mar 28, 2020, 6:13 PM CDT for Benton County, Buchanan County, Iowa. It was in force for 47 min. 4 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: Mar 28, 2020, 6:13 PM CDT (23:13 UTC)
Expired: Mar 28, 2020, 7:00 PM CDT
In force: 47 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Benton County, IA, Buchanan County, IA

The radar

The Quad Cities radar (KDVN), 138 km from the middle of the area, began a volume at 23:12 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
Mar 28, 6:15 PM CDT	TORNADO	2 Nnw Jesup, IA	A TORNADO TOUCHED DOWN NORTH OF JESUP AND MOVED NORTHEAST CAUSING DAMAGE TO OUTBUILDINGS, A BARN, AND UPROOTED TREES AT A FARMSTEAD.
Mar 28, 6:18 PM CDT	TORNADO	1 Ssw Fairbank, IA	ON GROUND NEAR BAXTER AVE AND V56 RD.
Mar 28, 6:28 PM CDT	HAIL 1.75	2 Se Otterville, IA	NOW SEEING PEA SIZE HAIL.
Mar 28, 6:29 PM CDT	TORNADO	3 Nne Littleton, IA	LARGE TORNADO ON THE GROUND DOING DAMAGE.

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
Mar 28, 2:45 PM CDT	Tornado Watch PDS	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.2 hours before the alert went out and 142 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: 695 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -128 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

420 
WFUS53 KDVN 282313
TORDVN
IAC011-019-290000-
/O.NEW.KDVN.TO.W.0004.200328T2313Z-200329T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
613 PM CDT Sat Mar 28 2020

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Buchanan County in northeastern Iowa...
  Northeastern Benton County in east central Iowa...

* Until 700 PM CDT.

* At 612 PM CDT, tornado producing storms were located along a line
  extending from near Fairbank to near Mount Auburn, moving northeast
  at 60 mph.

  HAZARD...Damaging tornado.

  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.

* These tornadic storms will be near...
  Independence and Winthrop around 630 PM CDT.
  Hazleton around 635 PM CDT.
  Lamont, Aurora and Stanley around 640 PM CDT.

Other locations impacted by these tornadic storms include Lime Creek
County Park, Winthrop Golf Course, Wapsipinicon Golf Course, Rodgers
Park, Fontana County Park, Littleton, Monti, Buchanan County
Fairgrounds, Otterville and Spencers Grove.

This includes Interstate 380 between mile markers 44 and 55.
 
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 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4216 9215 4230 9213 4230 9206
      4247 9206 4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2312Z 213DEG 53KT 4269 9204 4229 9206 

TORNADO...OBSERVED
HAIL...<.75IN

$$

Ervin

5 follow-up statements

159 
WWUS53 KDVN 282321 RRA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
621 PM CDT Sat Mar 28 2020

IAC011-019-290000-
/O.CON.KDVN.TO.W.0004.000000T0000Z-200329T0000Z/
Buchanan IA-Benton IA-
621 PM CDT Sat Mar 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR BUCHANAN
AND NORTHEASTERN BENTON COUNTIES...
    
At 620 PM CDT, tornado producing storms were located along a line
extending from near Fairbank to Brandon, moving east at 45 mph.

HAZARD...Damaging tornado.

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.

These tornadic storms will be near...
  Hazleton around 625 PM CDT.
  Rowley and Stanley around 630 PM CDT.
  Aurora around 635 PM CDT.
  Quasqueton and Lamont around 640 PM CDT.
  Winthrop around 645 PM CDT.

Other locations impacted by these tornadic storms include Lime Creek
County Park, Winthrop Golf Course, Wapsipinicon Golf Course, Rodgers
Park, Fontana County Park, Littleton, Monti, Buchanan County
Fairgrounds, Otterville and Spencers Grove.

This includes Interstate 380 between mile markers 44 and 55.
 
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 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4216 9215 4230 9213 4230 9206
      4247 9206 4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2320Z 252DEG 38KT 4264 9198 4232 9200 

TORNADO...OBSERVED
HAIL...<.75IN

$$

Ervin

096 
WWUS53 KDVN 282333
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
633 PM CDT Sat Mar 28 2020

IAC011-019-290000-
/O.CON.KDVN.TO.W.0004.000000T0000Z-200329T0000Z/
Buchanan IA-Benton IA-
633 PM CDT Sat Mar 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR BUCHANAN
AND NORTHEASTERN BENTON COUNTIES...
    
At 632 PM CDT, tornado producing storms were located along a line
extending from near Oelwein to near Rowley, moving northeast at 45
mph.

HAZARD...Large Damaging tornado and Golf Ball size hail.

SOURCE...Weather spotters confirmed large tornado in extreme 
         northern Buchanan County, near Fairbank. Another developing 
         tornado is near Independence, moving northeast at 45 mph.

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.

These tornadic storms will be near...
  Aurora around 655 PM CDT.
  Lamont around 700 PM CDT.

Other locations impacted by these tornadic storms include Lime Creek
County Park, Winthrop Golf Course, Wapsipinicon Golf Course, Rodgers
Park, Fontana County Park, Littleton, Monti, Buchanan County
Fairgrounds, Otterville and Spencers Grove.

This includes Interstate 380 between mile markers 44 and 55.
 
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 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4216 9215 4230 9213 4230 9206
      4247 9206 4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2332Z 226DEG 40KT 4271 9187 4239 9189 

TORNADO...OBSERVED
HAIL...1.75IN

$$

Ervin

631 
WWUS53 KDVN 282342 RRA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
642 PM CDT Sat Mar 28 2020

IAC011-019-290000-
/O.CON.KDVN.TO.W.0004.000000T0000Z-200329T0000Z/
Buchanan IA-Benton IA-
642 PM CDT Sat Mar 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR BUCHANAN
AND NORTHEASTERN BENTON COUNTIES...
    
At 640 PM CDT, severe thunderstorms capable of producing tornadoes
were located along a line extending from Stanley to near Walker,
moving northeast at 45 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation. The large confirmed tornado has 
         moved into Fayette County.  Additional rotation and 
         tornadoes remain likely in the central and east portions of 
         Buchanan County.

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.

These dangerous storms will be near...
  Hazleton, Aurora and Stanley around 645 PM CDT.
  Winthrop around 655 PM CDT.
  Lamont around 705 PM CDT.

Other locations impacted by these tornadic storms include Lime Creek
County Park, Winthrop Golf Course, Wapsipinicon Golf Course, Fontana
County Park, Littleton, Monti, Buchanan County Fairgrounds,
Otterville, Spencers Grove and Minne Estema Park.

This includes Interstate 380 between mile markers 44 and 55.
 
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 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4219 9206 4226 9210 4230 9206
      4247 9206 4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2340Z 217DEG 47KT 4263 9183 4231 9185 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Ervin

606 
WWUS53 KDVN 282350
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
650 PM CDT Sat Mar 28 2020

IAC011-019-290000-
/O.CON.KDVN.TO.W.0004.000000T0000Z-200329T0000Z/
Buchanan IA-Benton IA-
650 PM CDT Sat Mar 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR BUCHANAN
AND NORTHEASTERN BENTON COUNTIES...
        
At 650 PM CDT, severe thunderstorms capable of producing a tornado
were located along a line extending from 6 miles southeast of
Hazleton to near Walker, moving northeast at 45 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

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.

These dangerous storms will be near...
  Hazleton around 655 PM CDT.
  Lamont, Aurora and Stanley around 700 PM CDT.
  Winthrop around 705 PM CDT.

Other locations impacted by these tornadic storms include Lime Creek
County Park, Monti, Buchanan County Fairgrounds, Winthrop Golf
Course, Otterville, Spencers Grove, Wapsipinicon Golf Course,
Independence Airport, Jakway Park and Fontana County Park.

This includes Interstate 380 between mile markers 44 and 52.
 
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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4223 9193 4227 9199 4232 9201
      4253 9201 4264 9196 4264 9161
TIME...MOT...LOC 2350Z 219DEG 39KT 4255 9183 4233 9180 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Ervin

830 
WWUS53 KDVN 282359
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
659 PM CDT Sat Mar 28 2020

IAC011-019-290009-
/O.EXP.KDVN.TO.W.0004.000000T0000Z-200329T0000Z/
Buchanan IA-Benton IA-
659 PM CDT Sat Mar 28 2020

...THE TORNADO WARNING FOR BUCHANAN AND NORTHEASTERN BENTON COUNTIES
WILL EXPIRE AT 700 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 900 PM CDT for northeastern
and east central Iowa.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Quad Cities.

Remember, a Tornado Warning still remains in effect for Eastern 
Buchanan and Deleware Counties.

LAT...LON 4247 9160 4232 9163 4229 9171 4230 9183
      4226 9183 4223 9193 4227 9199 4232 9201
      4253 9201 4264 9196 4264 9161
TIME...MOT...LOC 2359Z 213DEG 53KT 4260 9179 4238 9176 

$$

Ervin

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 9:13 PM CDT	River Flood Watch	DVN	Dubuque	61 hr
Mar 27, 11:51 PM CDT	Flash Flood Warning	DVN	Muscatine, Scott	4 hr
Mar 28, 12:35 AM CDT	Special Weather Statement	DVN	Iowa	25 min
Mar 28, 1:05 AM CDT	Special Weather Statement	DVN	Iowa, Johnson	40 min
Mar 28, 1:37 AM CDT	Special Weather Statement	DVN	Keokuk	23 min
Mar 28, 1:53 AM CDT	Severe Thunderstorm Warning	DVN	Keokuk, Washington	26 min
Mar 28, 2:29 AM CDT	Special Weather Statement	DVN	Clinton	31 min
Mar 28, 2:44 AM CDT	Special Weather Statement	DVN	Cedar	31 min
Mar 28, 2:55 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	35 min
Mar 28, 3:57 AM CDT	Special Weather Statement	DVN	Jefferson	33 min
Mar 28, 4:21 AM CDT	Special Weather Statement	DVN	Louisa	24 min
Mar 28, 5:19 AM CDT	Special Weather Statement	DVN	Iowa	26 min
Mar 28, 10:52 AM CDT	River Flood Warning	DVN	Dubuque, Jackson	22 days
Mar 28, 10:52 AM CDT	River Flood Warning	DVN	Clinton, Scott	24 days
Mar 28, 10:52 AM CDT	River Flood Warning	DVN	Lee	21 days
Mar 28, 11:21 AM CDT	Special Weather Statement	DVN	Washington	24 min
Mar 28, 11:25 AM CDT	River Flood Watch	DVN	Clinton	21 days
Mar 28, 11:25 AM CDT	River Flood Watch	DVN	Scott	10 hr
Mar 28, 6:03 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	42 min
Mar 28, 6:53 PM CDT	Tornado Warning	DVN	Buchanan, Delaware	28 min

Nearby

Tornado Warnings in Iowa, 2020 Every tornado warning in 2020 Tornadoes 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.