Alert archive / Iowa / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 13, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at May 2, 2018, 8:19 PM CDT for Delaware County, Dubuque County, Iowa. It was in force for 36 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
- May 2, 2018, 8:19 PM CDT (01:19 UTC)
- Expired
- May 2, 2018, 8:55 PM CDT
- In force
- 36 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Delaware County, IA, Dubuque County, IA
The radar
The Quad Cities radar (KDVN), 97 km from the middle of the area, began a volume at 01:22 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 00:00Z, 1.3 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.
- Mixed-layer CAPE
- 1023 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1402 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.1
The text
As transmitted.
578 WUUS53 KDVN 030119 SVRDVN IAC055-061-030215- /O.NEW.KDVN.SV.W.0013.180503T0119Z-180503T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Quad Cities IA/IL 819 PM CDT WED MAY 2 2018 The National Weather Service in the Quad Cities has issued a * Severe Thunderstorm Warning for... Southwestern Dubuque County in northeastern Iowa... Southeastern Delaware County in northeastern Iowa... * Until 915 PM CDT * At 819 PM CDT, a severe thunderstorm was located over Hopkinton, or 14 miles southeast of Manchester, moving east at 25 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Dyersville, Cascade, Epworth, Farley, Peosta, Hopkinton, Worthington, Centralia, Bernard, Bankston, Graf, Fillmore, Fillmore Recreation Area, Lattnerville, Camp Little Cloud, Washington Mills and Buck Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building. && LAT...LON 4254 9085 4230 9075 4230 9136 4242 9132 TIME...MOT...LOC 0119Z 268DEG 23KT 4236 9122 HAIL...1.00IN WIND...<50MPH $$ ERVIN
3 follow-up statements
283 WWUS53 KDVN 030138 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 838 PM CDT WED MAY 2 2018 IAC055-061-030215- /O.CON.KDVN.SV.W.0013.000000T0000Z-180503T0215Z/ Dubuque IA-Delaware IA- 838 PM CDT WED MAY 2 2018 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR SOUTHWESTERN DUBUQUE AND SOUTHEASTERN DELAWARE COUNTIES... At 838 PM CDT, a severe thunderstorm was located near Worthington, or 20 miles northeast of Anamosa, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Cascade, Epworth, Farley, Hopkinton, Worthington, Bernard, Fillmore, Fillmore Recreation Area, Washington Mills and Buck Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building. && LAT...LON 4245 9093 4230 9075 4230 9136 4242 9132 TIME...MOT...LOC 0138Z 269DEG 19KT 4236 9108 HAIL...1.00IN WIND...<50MPH $$ ERVIN
927
WWUS53 KDVN 030147
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
847 PM CDT WED MAY 2 2018
IAC055-030157-
/O.CAN.KDVN.SV.W.0013.000000T0000Z-180503T0215Z/
Delaware IA-
847 PM CDT WED MAY 2 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DELAWARE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4245 9093 4233 9092 4232 9112 4243 9113
TIME...MOT...LOC 0147Z 265DEG 15KT 4236 9105
$$
IAC061-030215-
/O.CON.KDVN.SV.W.0013.000000T0000Z-180503T0215Z/
Dubuque IA-
847 PM CDT WED MAY 2 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHWESTERN DUBUQUE COUNTY...
At 847 PM CDT, a severe thunderstorm was located near Worthington, or
20 miles southwest of Dubuque, moving east at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Epworth, Farley and Worthington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4245 9093 4233 9092 4232 9112 4243 9113
TIME...MOT...LOC 0147Z 265DEG 15KT 4236 9105
HAIL...1.00IN
WIND...<50MPH
$$
ERVIN457
WWUS53 KDVN 030155
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
855 PM CDT WED MAY 2 2018
IAC061-030205-
/O.CAN.KDVN.SV.W.0013.000000T0000Z-180503T0215Z/
Dubuque IA-
855 PM CDT WED MAY 2 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DUBUQUE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been
cancelled. However heavy rain is still possible with this
thunderstorm.
LAT...LON 4245 9093 4233 9092 4232 9112 4243 9113
TIME...MOT...LOC 0153Z 268DEG 23KT 4236 9098
$$
ERVINThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 7:18 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Washington | 57 min |
| May 2, 7:24 PM CDT | Tornado Warning | DVN | Johnson, Washington | 51 min |
| May 2, 7:51 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 39 min |
| May 2, 7:51 PM CDT | Tornado Warning | DVN | Cedar, Johnson, Muscatine | 20 min |
| May 2, 7:58 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 29 min |
| May 2, 8:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine | 53 min |
| May 2, 8:34 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 27 min |
| May 2, 9:51 PM CDT | Special Weather Statement | DVN | Scott | 24 min |
| May 2, 10:18 PM CDT | Special Weather Statement | DVN | Scott | 87 min |
| May 2, 11:40 PM CDT | Special Weather Statement | DVN | Lee, Van Buren | 50 min |
| May 3, 10:39 AM CDT | River Flood Warning | DVN | Clinton, Scott | 24 hr |
| May 3, 11:15 AM CDT | River Flood Watch | DVN | Jackson | 11 hr |
| May 3, 11:15 AM CDT | River Flood Watch | DVN | Lee | 7 days |
| May 3, 2:51 PM CDT | Special Weather Statement | DVN | Buchanan | 39 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2018Every severe thunderstorm warning 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.