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 May 25, 2021, 11:26 PM CDT for Benton County, Linn County, Iowa. It was in force for 34 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
- May 25, 2021, 11:26 PM CDT (04:26 UTC)
- Expired
- May 26, 2021, 12:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Quad Cities, IA
Counties Benton County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 115 km from the middle of the area, began a volume at 04:28 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, 4.4 hours before the alert went out and 121 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
- 849 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
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 May 25, 6:32 PM CDT, 4 hours 54 minutes earlier.
Area forecast discussion, May 25, 6:32 PM CDT, 4 hours 54 minutes before
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</head>
<body>
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<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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</html>Hazardous weather outlook, May 25, 4:24 AM CDT, 19 hours 2 minutes before
Hazardous Weather Outlook National Weather Service Quad Cities IA IL 424 AM CDT Tue May 25 2021 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-260930- 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- 424 AM CDT Tue May 25 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 has a marginal risk for severe storms this afternoon into tonight. Isolated damaging winds are the primary concern. Thunderstorms are possible this afternoon but coverage is expected to remain low. The highest coverage of storms may hold off until tonight as a cold front moves through the area. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY Another round of rain and thunderstorms is expected on Thursday. This system could produce heavy rainfall with 1 to 2 inches possible in the hardest hit areas. There is also a marginal risk for severe storms south of Interstate 80. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon into tonight. Uttech
In the hours before
Local storm report, May 25, 9:43 PM CDT, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
943 PM CDT TUE MAY 25 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0918 PM TSTM WND GST 5 SSE HAZLETON 42.55N 91.86W
05/25/2021 E45 MPH BUCHANAN IA TRAINED SPOTTER
ESTIMATED 40-50 MPH GUST.
&&Special weather statement, May 25, 11:26 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
1126 PM CDT Tue May 25 2021
IAC011-105-113-260500-
Benton-Jones-Linn-
1126 PM CDT Tue May 25 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL BENTON...
NORTHWESTERN JONES AND LINN COUNTIES UNTIL MIDNIGHT CDT...
At 1125 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Troy Mills to Toddville to Newhall.
Movement was east at 40 mph.
Winds in excess of 40 mph are possible with these storms.
Locations impacted include...
Cedar Rapids, Anamosa, Vinton, Marion, Hiawatha, Mount Vernon,
Robins, Center Point, Fairfax, Atkins, Urbana, Central City,
Springville, Palo, Shellsburg, Newhall, Walker, Van Horne, Alburnett
and Coggon.
This includes Interstate 380 between mile markers 15 and 46.
LAT...LON 4211 9221 4230 9190 4228 9127 4204 9127
4189 9148 4196 9230
TIME...MOT...LOC 0425Z 282DEG 33KT 4227 9163 4212 9172 4198 9194
UttechThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 12:03 AM CDT | Special Weather Statement | DVN | Jones, Linn | 27 min |
| May 26, 1:33 AM CDT | Special Weather Statement | DVN | Keokuk | 42 min |
| May 26, 2:05 AM CDT | Special Weather Statement | DVN | Washington | 25 min |
| May 26, 3:07 AM CDT | Special Weather Statement | DVN | Louisa | 38 min |
| May 26, 3:45 AM CDT | Special Weather Statement | DVN | Mercer, Rock Island | 45 min |
Nearby
Special Weather Statements in Iowa, 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.