Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 14, 2021, 6:04 PM CDT for Buchanan County, Iowa. It was in force for 41 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
- Jul 14, 2021, 6:04 PM CDT (23:04 UTC)
- Expired
- Jul 14, 2021, 6:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Buchanan County, IA
The radar
The Quad Cities radar (KDVN), 153 km from the middle of the area, began a volume at 23:05 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 14, 2:35 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.1 hours before the alert went out and 158 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
- 573 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
255
WUUS53 KDVN 142304
SVRDVN
IAC019-142345-
/O.NEW.KDVN.SV.W.0046.210714T2304Z-210714T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
604 PM CDT Wed Jul 14 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Northwestern Buchanan County in northeastern Iowa...
* Until 645 PM CDT.
* At 603 PM CDT, severe thunderstorms were located along a line
extending from 6 miles south of Sumner to near Elk Run Heights,
moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Severe thunderstorms will be near...
Fairbank around 610 PM CDT.
Other locations in the path of these severe thunderstorms include
Stanley, Hazleton and Independence.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 900 PM CDT for northeastern
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4248 9187 4250 9208 4264 9208 4264 9181
TIME...MOT...LOC 2303Z 272DEG 25KT 4275 9209 4255 9226
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Uttech1 follow-up statement
496 WWUS53 KDVN 142313 SVSDVN Severe Weather Statement National Weather Service Quad Cities IA/IL 613 PM CDT Wed Jul 14 2021 IAC019-142345- /O.CON.KDVN.SV.W.0046.000000T0000Z-210714T2345Z/ Buchanan IA- 613 PM CDT Wed Jul 14 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR NORTHWESTERN BUCHANAN COUNTY... At 613 PM CDT, severe thunderstorms were located along a line extending from 6 miles west of Maynard to 6 miles northwest of Jesup, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Stanley, Hazleton and Independence. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 900 PM CDT for northeastern Iowa. For your protection move to an interior room on the lowest floor of a sturdy building. Continuous cloud to ground lightning is occurring with these storms. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4248 9187 4250 9208 4264 9208 4264 9181 TIME...MOT...LOC 2313Z 272DEG 25KT 4275 9200 4255 9217 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ Uttech
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 5:38 AM CDT | Special Weather Statement | DVN | Buchanan | 37 min |
| Jul 14, 9:32 AM CDT | Special Weather Statement | DVN | Keokuk | 28 min |
| Jul 14, 10:02 AM CDT | Special Weather Statement | DVN | Benton, Iowa, Jefferson, Keokuk, Washington | 28 min |
| Jul 14, 10:28 AM CDT | Special Weather Statement | DVN | Benton, Buchanan, Henry, Iowa, Jefferson, Johnson and 1 more | 32 min |
| Jul 14, 10:58 AM CDT | Special Weather Statement | DVN | Delaware, Johnson, Linn, Louisa, Washington | 32 min |
| Jul 14, 11:31 AM CDT | Special Weather Statement | DVN | Cedar, Clinton, Dubuque, Jackson, Jones, Scott | 29 min |
| Jul 14, 11:40 AM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson | 35 min |
| Jul 14, 12:15 PM CDT | Special Weather Statement | DVN | Clinton, Dubuque, Jackson | 30 min |
| Jul 14, 12:35 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 40 min |
| Jul 14, 1:07 PM CDT | Special Weather Statement | DVN | Scott | 38 min |
| Jul 14, 6:25 PM CDT | Tornado Warning | DVN | Buchanan | 50 min |
| Jul 14, 6:32 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 43 min |
| Jul 14, 6:56 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 49 min |
| Jul 14, 6:58 PM CDT | Tornado Warning | DVN | Benton | 47 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2021Every severe thunderstorm warning in 2021
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.