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 Oct 13, 2021, 9:13 AM CDT for Clinton County, Jackson County, Scott County, Iowa; Henry County, Mercer County, Rock Island County, Illinois. It was in force for 47 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
- Oct 13, 2021, 9:13 AM CDT (14:13 UTC)
- Expired
- Oct 13, 2021, 10:00 AM CDT
- In force
- 47 min
- Issued by
- NWS Quad Cities, IA
- Hail
- 0.25 in
- Wind
- 30
Counties Clinton County, IA, Jackson County, IA, Scott County, IA, Henry County, IL, Mercer County, IL, Rock Island County, IL
The radar
The Quad Cities radar (KDVN), 14 km from the middle of the area, began a volume at 14:17 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, 2.2 hours before the alert went out and 10 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1576 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
717
WWUS83 KDVN 131413
SPSDVN
Special Weather Statement
National Weather Service Quad Cities IA/IL
913 AM CDT Wed Oct 13 2021
IAZ042-053-054-065>068-ILZ001-009-015-016-024-026-131500-
Warren IL-Mercer IL-Whiteside IL-Jo Daviess IL-Henry IL-
Rock Island IL-Clinton IA-Dubuque IA-Scott IA-Jackson IA-
Muscatine IA-Cedar IA-Jones IA-
913 AM CDT Wed Oct 13 2021
...Strong thunderstorms will impact portions of Rock Island, eastern
Mercer, southwestern Whiteside, western Jo Daviess, north central
Warren, western Henry, Jackson, northeastern Cedar, northeastern
Muscatine, Scott, southeastern Dubuque, southeastern Jones and
Clinton Counties through 1000 AM CDT...
At 910 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Oxford Junction to near Burgess. Movement was
northeast at 45 mph.
HAZARD...Winds in excess of 30 mph and pea 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. Also very heavy rainfall and greatly reduced
visibility will also occur along the bands of heavy showers
and storms as they pass by.
Strong thunderstorms will be near...
Wyoming, Oxford Junction, Monmouth and Nashville around 915 AM
CDT.
Maquoketa, Woodhull, Alpha, New Windsor, Fulton, Hurstville and
Cable around 925 AM CDT.
Other locations in the path of these storms include Andrew, Zwingle,
Lynn Center, Orion, Andover, La Motte, Cambridge, Bellevue, St.
Donatus, Galena and Geneseo.
This includes the following highways...
Interstate 74 in Iowa between mile markers 1 and 5.
Interstate 80 in Iowa between mile markers 279 and 306.
Interstate 80 in Illinois between mile markers 1 and 23.
Interstate 74 in Illinois between mile markers 1 and 33.
Interstate 88 between mile markers 1 and 13.
Interstate 280 between mile markers 1 and 18.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4130 9005 4115 9030 4115 9044 4107 9044
4093 9067 4203 9103 4251 9049 4251 9044
TIME...MOT...LOC 1407Z 225DEG 52KT 4200 9096 4104 9064
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH
$$
12The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 5:52 AM CDT | Special Weather Statement | DVN | Van Buren | 38 min |
| Oct 13, 6:43 AM CDT | Special Weather Statement | DVN | Van Buren | 47 min |
| Oct 13, 7:08 AM CDT | Special Weather Statement | DVN | Henry | 37 min |
| Oct 13, 7:51 AM CDT | Special Weather Statement | DVN | Henry, Jefferson, Johnson, Louisa, Muscatine, Washington | 39 min |
Nearby
Special Weather Statements in Iowa, 2021Special Weather Statements in Illinois, 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.