Alert archive / Iowa / Special Weather Statements in 2020
Special Weather Statement, NWS Quad Cities, IA
NWS Quad Cities, IA issued this special weather statement at Jun 21, 2020, 10:31 PM CDT for Buchanan 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 outline as issued.
The facts
- Issued
- Jun 21, 2020, 10:31 PM CDT (03:31 UTC)
- Expired
- Jun 21, 2020, 11:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Quad Cities, IA
County Buchanan County, IA
The radar
The Quad Cities radar (KDVN), 141 km from the middle of the area, began a volume at 03:31 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, 3.5 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
- 751 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 21, 6:35 PM CDT, 3 hours 56 minutes earlier.
Area forecast discussion, Jun 21, 6:35 PM CDT, 3 hours 56 minutes before
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</html>Hazardous weather outlook, Jun 21, 4:48 AM CDT, 17 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Quad Cities IA IL 448 AM CDT Sun Jun 21 2020 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-221000- 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- 448 AM CDT Sun Jun 21 2020 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 Isolated to scattered thunderstorms will develop this afternoon across portions of the Outlook Area. While widespread severe weather is not expected with this afternoon activity, a stronger storm cell may be able to produce gusty winds and hail up to dime size. Frequent cloud to ground lightning and locally heavy downpours will also occur with afternoon thunderstorms. Later tonight there will be the chance for a larger area of thunderstorms moving down into the area from the northwest. Again, at this time widespread severe weather is not expected. But there may be a chance for a stronger segment of storms to produce gusty winds and heavy rainfall that may lead to flooding. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Thunderstorms are expected on Monday and Monday evening. At this time severe storms are not anticipated, but stronger storms could produce gusty winds, small hail, and heavy rain. Storms will be possible later in the week, but it is too early to assess any potential for severe weather. .SPOTTER INFORMATION STATEMENT... There is a low chance that spotter activation will be needed today and tonight. 12/Brooks
In the hours before
Special weather statement, Jun 21, 6:09 PM CDT, 4 hours 22 minutes before
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</html>Local storm report, Jun 21, 6:17 PM CDT, 4 hours 14 minutes before
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</html>Local storm report, Jun 21, 6:48 PM CDT, 3 hours 43 minutes before
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</html>Local storm report, Jun 21, 8:07 PM CDT, 2 hours 24 minutes before
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</html>Special weather statement, Jun 21, 10:31 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 11:02 PM CDT | Special Weather Statement | DVN | Benton, Buchanan, Delaware | 43 min |
| Jun 21, 11:28 PM CDT | Special Weather Statement | DVN | Benton, Buchanan | 47 min |
| Jun 21, 11:58 PM CDT | Special Weather Statement | DVN | Benton, Delaware | 47 min |
| Jun 22, 12:51 AM CDT | Special Weather Statement | DVN | Benton, Delaware, Dubuque, Jones, Linn | 54 min |
| Jun 22, 1:40 AM CDT | Special Weather Statement | DVN | Dubuque, Jackson, Jones | 65 min |
| Jun 22, 1:43 AM CDT | Special Weather Statement | DVN | Benton, Buchanan | 62 min |
| Jun 22, 2:18 AM CDT | Special Weather Statement | DVN | Iowa | 57 min |
| Jun 22, 2:54 AM CDT | Special Weather Statement | DVN | Buchanan | 51 min |
| Jun 22, 3:12 AM CDT | Special Weather Statement | DVN | Iowa, Johnson, Keokuk | 63 min |
| Jun 22, 3:35 AM CDT | Flash Flood Warning | DVN | Buchanan | 6 hr |
| Jun 22, 3:44 AM CDT | Special Weather Statement | DVN | Washington | 46 min |
| Jun 22, 4:23 AM CDT | Special Weather Statement | DVN | Henry, Jefferson, Louisa, Muscatine, Washington | 52 min |
| Jun 22, 5:24 AM CDT | Special Weather Statement | DVN | Cedar, Clinton, Des Moines, Louisa, Muscatine, Scott | 66 min |
| Jun 22, 6:12 AM CDT | Special Weather Statement | DVN | Clinton, Scott | 63 min |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Clinton, Scott | 12 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Linn | 6 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 7 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Johnson | 7 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 21 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Benton, Iowa | 9 days |
| Jun 22, 9:19 AM CDT | River Flood Warning | DVN | Johnson, Washington | 13 hr |
| Jun 22, 9:58 AM CDT | Areal Flood Warning | DVN | Benton, Buchanan | 24 hr |
| Jun 22, 10:03 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more | 9 hr |
| Jun 22, 2:36 PM CDT | Special Weather Statement | DVN | Des Moines | 24 min |
| Jun 22, 2:52 PM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 6 days |
| Jun 22, 2:56 PM CDT | River Flood Warning | DVN | Keokuk | 41 hr |
| Jun 22, 2:59 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry | 46 min |
| Jun 22, 3:13 PM CDT | River Flood Warning | DVN | Benton, Linn | 4 days |
| Jun 22, 3:21 PM CDT | River Flood Warning | DVN | Louisa | 21 days |
| Jun 22, 3:21 PM CDT | River Flood Warning | DVN | Louisa | 11 days |
| Jun 22, 4:02 PM CDT | Special Weather Statement | DVN | Lee | 58 min |
| Jun 22, 4:12 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 63 min |
| Jun 22, 3:44 PM CDT | Special Weather Statement | DVN | Henderson, Warren | 46 min |
| Jun 22, 4:18 PM CDT | Severe Thunderstorm Warning | DVN | Putnam | 27 min |
| Jun 22, 4:49 PM CDT | Special Weather Statement | DVN | Putnam | 26 min |
| Jun 22, 4:53 PM CDT | Special Weather Statement | DVN | McDonough | 37 min |
| Jun 22, 4:56 PM CDT | Special Weather Statement | DVN | Carroll | 34 min |
| Jun 22, 5:04 PM CDT | Flash Flood Warning | DVN | Hancock, McDonough | 3 hr |
| Jun 22, 5:16 PM CDT | Special Weather Statement | DVN | McDonough | 14 min |
| Jun 22, 2:34 PM CDT | Special Weather Statement | DVN | Scotland | 26 min |
| Jun 22, 3:22 PM CDT | Special Weather Statement | DVN | Clark, Scotland | 38 min |
Nearby
Special Weather Statements in Iowa, 2020Every special weather statement in 2020
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.