Alert archive / Iowa / Special Weather Statements in 2021
Special Weather Statement, NWS Quad Cities, IA
NWS Quad Cities, IA issued this special weather statement at Jun 24, 2021, 7:23 AM CDT for Lee County, Van Buren County, Iowa; Clark County, Scotland County, Missouri. It was in force for 52 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 24, 2021, 7:23 AM CDT (12:23 UTC)
- Expired
- Jun 24, 2021, 8:15 AM CDT
- In force
- 52 min
- Issued by
- NWS Quad Cities, IA
Counties Lee County, IA, Van Buren County, IA, Clark County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 153 km from the middle of the area, began a volume at 12:25 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 12:00Z, 0.4 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
- 389 J/kg
- Mixed-layer CIN
- -353 J/kg
- Mixed-layer LCL
- 1072 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 24, 6:53 AM CDT, 30 minutes earlier.
Area forecast discussion, Jun 24, 6:53 AM CDT, 30 minutes before
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<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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<p id="message2">
Please try again in a few minutes.
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</html>Hazardous weather outlook, Jun 24, 3:03 AM CDT, 4 hours 20 minutes before
Hazardous Weather Outlook National Weather Service Quad Cities IA IL 303 AM CDT Thu Jun 24 2021 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-250815- 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- 303 AM CDT Thu Jun 24 2021 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 The Storm Prediction Center is forecasting an Enhanced Risk for severe storms today and tonight, for northeast Missouri, and a Slight Risk for the remainder of outlook area. There will be two rounds of strong thunderstorms today. The first will be this morning, with strong winds and heavy rain possible in a line of storms moving through areas generally south of Highway 30. Tonight, thunderstorms are possible over the entire area, but the main threats will be found along and south of Interstate 80 where damaging winds, large hail and torrential rainfall are most possible. Isolated areas of flash flooding are possible tonight, mainly along and south of Highway 34, where soils are already wet. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A Slight Risk for severe weather has been issued by the Storm Prediction Center on Friday, with the main threats being isolated cases of large hail and severe winds. Several rounds of showers and storms are expected through Friday, which leads to a Slight Risk for Excessive Rainfall. Flash flooding will be a growing concern as forecast confidence grows on the axis of heaviest rain and timing. Another day of heavy rain chances on Saturday, but will slowly begin to die off in the evening. We have another Marginal Risk for severe weather on Saturday, with the threats being isolated large hail and severe gusts. Flash flooding threat will continue through Saturday as well. After Saturday, daily chances for showers and storms exist. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed for portions of the area on Today and Tonight. ERVIN/GUNKEL
In the hours before
Special weather statement, Jun 24, 7:23 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
723 AM CDT Thu Jun 24 2021
IAC111-177-MOC045-199-241315-
Van Buren-Lee-Scotland-Clark-
723 AM CDT Thu Jun 24 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT VAN BUREN...LEE...
SCOTLAND AND CLARK COUNTIES UNTIL 815 AM CDT...
At 723 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near Stockport to near Keosauqua to near
Memphis. Movement was southeast at 45 mph.
Wind gusts up to 50 mph are possible with these storms.
Locations impacted include...
Fort Madison, Keokuk, Kahoka, Memphis, Nauvoo, Keosauqua, Hamilton,
Warsaw, West Point, Donnellson, Montrose, Wayland, Birmingham,
Milton, Bonaparte, Stockport, Wyaconda, Cantril, Alexandria and
Franklin.
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms. Minor
flooding of low lying areas, creeks, streams and urban areas is
possible. If you encounter water over a roadway, do not drive through
it.
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.
These storms 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.
LAT...LON 4026 9191 4030 9195 4030 9198 4048 9232
4060 9224 4060 9218 4071 9218 4090 9212
4085 9172 4081 9172 4080 9139 4073 9122
4064 9125 4061 9135 4055 9141 4050 9136
4039 9138 4036 9145 4028 9149 4025 9155
TIME...MOT...LOC 1223Z 299DEG 41KT 4088 9188 4068 9200 4050 9218
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 2:08 PM CDT | Flash Flood Watch | DVN | Cedar, Clinton, Des Moines, Henry, Jefferson, Johnson and 7 more | 54 hr |
| Jun 24, 9:55 AM CDT | River Flood Warning | DVN | Hancock, McDonough | 37 hr |
| Jun 24, 10:39 AM CDT | Special Weather Statement | DVN | McDonough | 66 min |
Nearby
Special Weather Statements in Iowa, 2021Special Weather Statements in Missouri, 2021Every special weather statement 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.