Alert archive / Iowa / Tornado Warnings in 2017
Tornado Warning 22, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Apr 15, 2017, 7:56 PM CDT for 4 counties in Iowa. It was in force for 49 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
- Apr 15, 2017, 7:56 PM CDT (00:56 UTC)
- Expired
- Apr 15, 2017, 8:45 PM CDT
- In force
- 49 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Benton County, IA, Buchanan County, IA, Delaware County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 115 km from the middle of the area, began a volume at 00:56 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 |
|---|---|---|---|
| Apr 15, 8:24 PM CDT | FUNNEL CLOUD | 5 N Central City, IA | POSSIBLE FUNNEL SEEN DURING A LIGHTNING STRIKE. |
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 00:00Z, 0.9 hours before the alert went out and 119 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.
- Mixed-layer CAPE
- 183 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1821 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
073
WFUS53 KDVN 160056
TORDVN
IAC011-019-055-113-160145-
/O.NEW.KDVN.TO.W.0022.170416T0056Z-170416T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
756 PM CDT SAT APR 15 2017
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Southeastern Buchanan County in northeastern Iowa...
Northeastern Benton County in east central Iowa...
Southwestern Delaware County in northeastern Iowa...
Northern Linn County in east central Iowa...
* Until 845 PM CDT
* At 755 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Walker, or 12 miles northeast of Vinton, moving
east at 35 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...
Troy Mills around 810 PM CDT.
Paris around 820 PM CDT.
Central City, Coggon and Ryan around 825 PM CDT.
Prairieburg and Waubeek around 830 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Pinicon Ridge Park, Robinson, Spencers Grove, Buffalo Creek Park,
Howard H Cherry Scout Reservation, Cheney and Linn County
Fairgrounds.
This includes Interstate 380 between mile markers 43 and 48.
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 4238 9139 4214 9139 4225 9197 4233 9195
TIME...MOT...LOC 0055Z 274DEG 29KT 4228 9182
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
Gibbs4 follow-up statements
334
WWUS53 KDVN 160106
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
806 PM CDT SAT APR 15 2017
IAC011-160115-
/O.CAN.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Benton IA-
806 PM CDT SAT APR 15 2017
...THE TORNADO WARNING FOR NORTHEASTERN BENTON COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area, therefore the warning has been cancelled.
LAT...LON 4238 9139 4214 9139 4222 9183 4234 9182
TIME...MOT...LOC 0105Z 273DEG 28KT 4228 9174
$$
IAC019-055-113-160145-
/O.CON.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Buchanan IA-Delaware IA-Linn IA-
806 PM CDT SAT APR 15 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHEASTERN BUCHANAN...SOUTHWESTERN DELAWARE AND NORTHERN LINN
COUNTIES...
At 805 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Walker, or 15 miles southeast of Independence,
moving east at 30 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...
Troy Mills around 810 PM CDT.
Paris around 820 PM CDT.
Central City and Coggon around 825 PM CDT.
Ryan around 830 PM CDT.
Prairieburg and Waubeek around 835 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Buffalo Creek Park, Pinicon Ridge Park, Robinson, Howard H Cherry
Scout Reservation and Linn County Fairgrounds.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4238 9139 4214 9139 4222 9183 4234 9182
TIME...MOT...LOC 0105Z 273DEG 28KT 4228 9174
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
Gibbs042
WWUS53 KDVN 160124
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
824 PM CDT SAT APR 15 2017
IAC019-055-113-160145-
/O.CON.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Buchanan IA-Delaware IA-Linn IA-
824 PM CDT SAT APR 15 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHEASTERN BUCHANAN...SOUTHWESTERN DELAWARE AND NORTHEASTERN LINN
COUNTIES...
At 824 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Coggon, or 14 miles south of Manchester, moving east
at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Prairieburg around 835 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Buffalo Creek Park, Pinicon Ridge Park and Robinson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4238 9139 4220 9139 4222 9172 4235 9171
TIME...MOT...LOC 0124Z 272DEG 29KT 4228 9153
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
Gibbs036
WWUS53 KDVN 160133
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
833 PM CDT SAT APR 15 2017
IAC019-160143-
/O.CAN.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Buchanan IA-
833 PM CDT SAT APR 15 2017
...THE TORNADO WARNING FOR SOUTHEASTERN BUCHANAN 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 4238 9139 4220 9139 4222 9159 4234 9160
4236 9160
TIME...MOT...LOC 0133Z 272DEG 29KT 4228 9144
$$
IAC055-113-160145-
/O.CON.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Delaware IA-Linn IA-
833 PM CDT SAT APR 15 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN DELAWARE AND NORTHEASTERN LINN COUNTIES...
At 833 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Prairieburg, or 14 miles northwest of Anamosa,
moving east at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southwestern Delaware and northeastern Linn Counties, including the
following locations: Buffalo Creek Park and Robinson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4238 9139 4220 9139 4222 9159 4234 9160
4236 9160
TIME...MOT...LOC 0133Z 272DEG 29KT 4228 9144
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Gibbs047
WWUS53 KDVN 160139
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
839 PM CDT SAT APR 15 2017
IAC055-113-160148-
/O.EXP.KDVN.TO.W.0022.000000T0000Z-170416T0145Z/
Delaware IA-Linn IA-
839 PM CDT SAT APR 15 2017
...THE TORNADO WARNING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN
LINN COUNTIES WILL EXPIRE AT 845 PM CDT...
The tornadic thunderstorm which prompted the warning has weakened,
therefore the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
Remember, a Severe Thunderstorm Warning still remains in effect for
Linn County until 900 PM CDT.
LAT...LON 4238 9139 4220 9139 4222 9159 4234 9160
4236 9160
TIME...MOT...LOC 0138Z 274DEG 29KT 4228 9140
$$
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:03 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 43 min |
| Apr 15, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 61 min |
| Apr 15, 8:00 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Apr 15, 8:49 PM CDT | River Flood Watch | DVN | Iowa, Johnson | 6 days |
| Apr 15, 8:58 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 43 min |
| Apr 15, 10:31 PM CDT | Flash Flood Warning | DVN | Linn | 3 hr |
| Apr 15, 11:01 PM CDT | Flash Flood Warning | DVN | Jones | 3 hr |
| Apr 15, 11:53 PM CDT | Special Weather Statement | DVN | Clinton, Scott | 112 min |
| Apr 16, 8:03 AM CDT | River Flood Warning | DVN | Clinton, Scott | 5 days |
| Apr 16, 9:59 AM CDT | River Flood Watch | DVN | Louisa | 5 days |
| Apr 16, 9:59 AM CDT | River Flood Watch | DVN | Cedar, Louisa, Muscatine | 4 days |
| Apr 16, 10:01 AM CDT | River Flood Warning | DVN | Iowa | 7 days |
Nearby
Tornado Warnings in Iowa, 2017Every tornado warning in 2017Tornadoes in 2017
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.