Alert archive / Iowa / Tornado Warnings in 2018
Tornado Warning 26, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Sep 2, 2018, 3:41 PM CDT for Delaware County, Dubuque County, Iowa. It was in force for 22 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, 2018, 3:41 PM CDT (20:41 UTC)
- Expired
- Sep 2, 2018, 4:03 PM CDT
- In force
- 22 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Delaware County, IA, Dubuque County, IA
The radar
The Quad Cities radar (KDVN), 112 km from the middle of the area, began a volume at 20:44 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 nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 8.7 hours before the alert went out and 112 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
- 20 J/kg
- Mixed-layer CIN
- -242 J/kg
- Mixed-layer LCL
- 1345 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
375
WFUS53 KDVN 022041
TORDVN
IAC055-061-022130-
/O.NEW.KDVN.TO.W.0026.180902T2041Z-180902T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
341 PM CDT SUN SEP 2 2018
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Northwestern Dubuque County in northeastern Iowa...
East central Delaware County in northeastern Iowa...
* Until 430 PM CDT.
* At 341 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Dyersville, or 14 miles east of Manchester, moving
northeast at 45 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...
Dyersville, Farley and New Vienna around 350 PM CDT.
Epworth, Luxemburg and Bankston around 355 PM CDT.
Holy Cross around 400 PM CDT.
Dubuque and Rickardsville around 405 PM CDT.
Asbury, Sherrill, Balltown and Durango around 410 PM CDT.
Sageville around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Waupeton, Lattnerville, Graf, Lock And Dam 11, Five Points, East
Rickardsville, Edmore, Bankston Park, Mud Lake Park and Cottage Hill.
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 4266 9085 4264 9073 4263 9070 4261 9069
4259 9069 4257 9066 4254 9064 4237 9122
4249 9131 4265 9098 4265 9090 4268 9090
TIME...MOT...LOC 2041Z 242DEG 39KT 4247 9118
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Gibbs2 follow-up statements
699
WWUS53 KDVN 022050
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
350 PM CDT SUN SEP 2 2018
IAC055-022100-
/O.CAN.KDVN.TO.W.0026.000000T0000Z-180902T2130Z/
Delaware IA-
350 PM CDT SUN SEP 2 2018
...THE TORNADO WARNING FOR EAST CENTRAL DELAWARE COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
LAT...LON 4263 9070 4259 9069 4254 9064 4240 9113
4257 9114 4265 9099 4265 9090 4268 9090
TIME...MOT...LOC 2050Z 245DEG 38KT 4250 9105
$$
IAC061-022130-
/O.CON.KDVN.TO.W.0026.000000T0000Z-180902T2130Z/
Dubuque IA-
350 PM CDT SUN SEP 2 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHWESTERN DUBUQUE COUNTY...
At 350 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Dyersville, or 18 miles west of Dubuque, moving
northeast at 45 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...
Epworth and Bankston around 355 PM CDT.
Holy Cross around 400 PM CDT.
Dubuque and Rickardsville around 405 PM CDT.
Asbury, Sherrill, Balltown and Durango around 410 PM CDT.
Sageville around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include Lock
And Dam 11, Edmore, Bankston Park, Mud Lake Park, Cottage Hill,
Finley's Landing Park, New Wine Park, Waupeton, Lattnerville and
Graf.
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 4263 9070 4259 9069 4254 9064 4240 9113
4257 9114 4265 9099 4265 9090 4268 9090
TIME...MOT...LOC 2050Z 245DEG 38KT 4250 9105
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Gibbs760
WWUS53 KDVN 022103
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
403 PM CDT SUN SEP 2 2018
IAC061-022113-
/O.CAN.KDVN.TO.W.0026.000000T0000Z-180902T2130Z/
Dubuque IA-
403 PM CDT SUN SEP 2 2018
...THE TORNADO WARNING FOR NORTHWESTERN DUBUQUE COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 4263 9070 4259 9069 4254 9064 4240 9113
4257 9114 4265 9099 4265 9090 4268 9090
TIME...MOT...LOC 2102Z 242DEG 39KT 4257 9088
$$
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 7:32 PM CDT | Special Weather Statement | DVN | Keokuk | 28 min |
| Sep 1, 7:39 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 36 min |
| Sep 1, 7:52 PM CDT | Tornado Warning | DVN | Keokuk | 23 min |
| Sep 1, 8:14 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk | 46 min |
| Sep 1, 8:23 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 37 min |
| Sep 1, 8:56 PM CDT | Special Weather Statement | DVN | Washington | 49 min |
| Sep 1, 9:05 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Washington | 40 min |
| Sep 1, 9:08 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Washington | 52 min |
| Sep 1, 9:22 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 38 min |
| Sep 1, 9:52 PM CDT | Special Weather Statement | DVN | Iowa | 53 min |
| Sep 1, 9:56 PM CDT | Special Weather Statement | DVN | Louisa | 49 min |
| Sep 1, 10:04 PM CDT | Special Weather Statement | DVN | Washington | 26 min |
| Sep 1, 10:08 PM CDT | Flash Flood Warning | DVN | Keokuk | 5 hr |
| Sep 1, 11:20 PM CDT | Flash Flood Warning | DVN | Iowa, Keokuk, Washington | 4 hr |
| Sep 1, 11:29 PM CDT | Special Weather Statement | DVN | Scott | 46 min |
| Sep 1, 11:50 PM CDT | Special Weather Statement | DVN | Dubuque | 25 min |
| Sep 2, 9:26 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 39 hr |
| Sep 2, 9:53 AM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 11 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Louisa | 16 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 16 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines | 17 days |
| Sep 2, 10:22 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 17 days |
| Sep 2, 2:39 PM CDT | Special Weather Statement | DVN | Buchanan | 111 min |
| Sep 2, 3:01 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 44 min |
| Sep 2, 4:31 PM CDT | Special Weather Statement | DVN | Dubuque | 74 min |
| Sep 2, 5:32 PM CDT | Special Weather Statement | DVN | Jones | 43 min |
| Sep 2, 6:18 PM CDT | Special Weather Statement | DVN | Jackson | 42 min |
| Sep 2, 6:25 PM CDT | Special Weather Statement | DVN | Cedar, Muscatine, Scott, Washington | 50 min |
| Sep 2, 6:48 PM CDT | Special Weather Statement | DVN | Jefferson, Van Buren | 42 min |
Nearby
Tornado Warnings in Iowa, 2018Every tornado warning in 2018Tornadoes in 2018
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.