Alert archive / Iowa / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 21, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at May 14, 2018, 7:21 AM CDT for Jones County, Iowa. It was in force for 24 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
- May 14, 2018, 7:21 AM CDT (12:21 UTC)
- Expired
- May 14, 2018, 7:45 AM CDT
- In force
- 24 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Jones County, IA
The radar
The Quad Cities radar (KDVN), 62 km from the middle of the area, began a volume at 12:22 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 14, 7:21 AM CDT | HAIL 1 | 0.5 S Morley, IA | TIME ESTIMATED BASED ON RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 0.4 hours before the alert went out and 295 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
- 962 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1462 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698
WUUS53 KDVN 141221
SVRDVN
IAC105-141245-
/O.NEW.KDVN.SV.W.0021.180514T1221Z-180514T1245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
721 AM CDT MON MAY 14 2018
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Southern Jones County in east central Iowa...
* Until 745 AM CDT.
* At 720 AM CDT, a severe thunderstorm was located near Olin, or 7
miles southeast of Anamosa, moving northeast at 40 mph.
HAZARD...Quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Olin, Wyoming, Onslow, Morley, Center Junction, Canton, Hale and
Central Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4203 9090 4195 9118 4195 9125 4207 9130
4219 9090
TIME...MOT...LOC 1220Z 246DEG 33KT 4204 9117
HAIL...1.00IN
WIND...<50MPH
$$
Uttech3 follow-up statements
847
WWUS53 KDVN 141226
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
726 AM CDT MON MAY 14 2018
IAC105-141245-
/O.CON.KDVN.SV.W.0021.000000T0000Z-180514T1245Z/
Jones IA-
726 AM CDT MON MAY 14 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM CDT
FOR SOUTHEASTERN JONES COUNTY...
At 726 AM CDT, a severe thunderstorm was located over Olin, or 9
miles north of Stanwood, moving east at 35 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Olin, Wyoming, Onslow, Center Junction, Canton and Hale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4203 9090 4195 9118 4195 9121 4207 9122
4219 9090
TIME...MOT...LOC 1226Z 249DEG 31KT 4203 9112
HAIL...1.25IN
WIND...<50MPH
$$
Uttech744 WWUS53 KDVN 141236 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 736 AM CDT MON MAY 14 2018 IAC105-141245- /O.CON.KDVN.SV.W.0021.000000T0000Z-180514T1245Z/ Jones IA- 736 AM CDT MON MAY 14 2018 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM CDT FOR SOUTHEASTERN JONES COUNTY... At 736 AM CDT, a severe thunderstorm was located over Wyoming, or 13 miles northeast of Stanwood, moving east at 35 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Wyoming, Onslow, Canton and Hale. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building. && LAT...LON 4203 9090 4200 9110 4207 9112 4219 9090 TIME...MOT...LOC 1236Z 248DEG 30KT 4206 9103 HAIL...1.25IN WIND...<50MPH $$ Uttech
545
WWUS53 KDVN 141242
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
742 AM CDT MON MAY 14 2018
IAC105-141252-
/O.EXP.KDVN.SV.W.0021.000000T0000Z-180514T1245Z/
Jones IA-
742 AM CDT MON MAY 14 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JONES COUNTY WILL
EXPIRE AT 745 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
and gusty winds are still possible with this thunderstorm.
LAT...LON 4203 9090 4200 9110 4207 9112 4219 9090
TIME...MOT...LOC 1242Z 246DEG 33KT 4206 9104
$$
UttechThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 1:32 AM CDT | Special Weather Statement | DVN | Dubuque | 43 min |
| May 14, 3:04 AM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Dubuque, Jackson | 4 hr |
| May 14, 4:08 AM CDT | Special Weather Statement | DVN | Iowa | 37 min |
| May 14, 4:22 AM CDT | Special Weather Statement | DVN | Clinton, Jackson | 38 min |
| May 14, 4:41 AM CDT | Special Weather Statement | DVN | Iowa | 34 min |
| May 14, 5:03 AM CDT | Special Weather Statement | DVN | Linn | 27 min |
| May 14, 6:05 AM CDT | Special Weather Statement | DVN | Johnson | 25 min |
| May 14, 6:14 AM CDT | Special Weather Statement | DVN | Scott | 31 min |
| May 14, 6:54 AM CDT | Special Weather Statement | DVN | Linn | 36 min |
| May 14, 7:14 AM CDT | Special Weather Statement | DVN | Jones | 31 min |
| May 14, 2:39 PM CDT | Special Weather Statement | DVN | Scott | 36 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.