Alert archive / Iowa / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 165, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 29, 2023, 9:01 AM CDT for Jefferson County, Van Buren County, Iowa. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 29, 2023, 9:01 AM CDT (14:01 UTC)
- Expired
- Jun 29, 2023, 9:45 AM CDT
- In force
- 44 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Jefferson County, IA, Van Buren County, IA
The radar
The Quad Cities radar (KDVN), 140 km from the middle of the area, began a volume at 14:03 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 |
|---|---|---|---|
| Jun 29, 5:49 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 2.0 hours before the alert went out and 146 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
- 1430 J/kg
- Mixed-layer CIN
- -283 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 5:59 AM CDT, 3 hours 2 minutes earlier.
Area forecast discussion, Jun 29, 5:59 AM CDT, 3 hours 2 minutes before
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</html>Hazardous weather outlook, Jun 29, 3:18 AM CDT, 5 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Quad Cities IA IL 318 AM CDT Thu Jun 29 2023 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-300830- Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson- Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson- Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll- Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson- Warren-Hancock-McDonough-Scotland-Clark- 318 AM CDT Thu Jun 29 2023 This Hazardous Weather Outlook is for portions of north central Illinois...northwest Illinois...west central Illinois...east central Iowa...northeast Iowa...southeast Iowa and northeast Missouri. .DAY ONE...TODAY AND TONIGHT There is an enhanced or level 3 out of 5 risk of severe thunderstorms along and south of Interstate 80. There is slight or level 2 out of 5 risk form Interstate 80 to Highway 30 and a marginal or level 1 risk north of that. A line of thunderstorms is forecast to move into the area by late morning and move eastward across the area. The main threats today are damaging winds, large hail, and a tornado or two. This line of storms may move quickly across the area. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Daily thunderstorm chances continue through the weekend. The storm prediction center is forecasting a level 2, slight risk for severe storms over locations south of Highway 34 in west central Illinois and northeast Missouri. With a level 1 marginal risk in areas along and south of Interstate 80. The primary risk appears to be damaging winds Friday. Strong storms may again be possible south of Highway 34 on Saturday. While many locations do need significant rain, some locations may see heavy rainfall amounts, especially south of Highway 34 in the next few days. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today. DC/AE
In the hours before
Special weather statement, Jun 29, 8:54 AM CDT, 7 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
854 AM CDT Thu Jun 29 2023
IAZ098-291445-
Van Buren IA-
854 AM CDT Thu Jun 29 2023
...A strong thunderstorm will impact portions of central Van Buren
County through 945 AM CDT...
At 854 AM CDT, Doppler radar was tracking a strong thunderstorm near
Leando, or 12 miles east of Bloomfield, moving east at 30 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Leando around 905 AM CDT.
Douds around 910 AM CDT.
Other locations in the path of this storm include Keosauqua,
Birmingham, Bentonsport/Vernon and Stockport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 100 PM CDT for
southeastern Iowa.
&&
LAT...LON 4083 9218 4090 9190 4085 9178 4069 9184
4072 9218
TIME...MOT...LOC 1354Z 255DEG 27KT 4077 9219
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:54 AM CDT | Special Weather Statement | DVN | Van Buren | 51 min |
| Jun 29, 9:37 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 38 min |
| Jun 29, 10:08 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Lee, Van Buren | 52 min |
| Jun 29, 10:10 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Keokuk, Louisa, Washington | 50 min |
| Jun 29, 10:26 AM CDT | Tornado Warning | DVN | Lee, Van Buren | 34 min |
| Jun 29, 10:46 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 59 min |
| Jun 29, 10:57 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Louisa, Washington | 33 min |
| Jun 29, 11:12 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa, Muscatine | 48 min |
| Jun 29, 11:47 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 43 min |
| Jun 29, 10:53 AM CDT | Tornado Warning | DVN | Hancock, McDonough, Warren | 37 min |
| Jun 29, 11:01 AM CDT | Tornado Warning | DVN | Hancock, Henderson, McDonough, Warren | 29 min |
| Jun 29, 2:06 PM CDT | Special Weather Statement | DVN | Bureau, Putnam | 39 min |
| Jun 29, 2:09 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 51 min |
| Jun 29, 2:14 PM CDT | Tornado Warning | DVN | Bureau | 20 min |
| Jun 29, 9:29 AM CDT | Severe Thunderstorm Warning | DVN | Clark, Scotland | 46 min |
| Jun 29, 9:55 AM CDT | Tornado Warning | DVN | Scotland | 35 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2023Every severe thunderstorm warning in 2023
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.