Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 45, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 14, 2021, 4:27 PM CDT for Bureau County, Putnam County, Illinois. It was in force for 33 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
- Jul 14, 2021, 4:27 PM CDT (21:27 UTC)
- Expired
- Jul 14, 2021, 5:00 PM CDT
- In force
- 33 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bureau County, IL, Putnam County, IL
The radar
The Quad Cities radar (KDVN), 111 km from the middle of the area, began a volume at 21:28 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 12:00Z, 9.5 hours before the alert went out and 105 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
- 573 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
160
WUUS53 KDVN 142127
SVRDVN
ILC011-155-142200-
/O.NEW.KDVN.SV.W.0045.210714T2127Z-210714T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
427 PM CDT Wed Jul 14 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Northern Putnam County in north central Illinois...
Southeastern Bureau County in north central Illinois...
* Until 500 PM CDT.
* At 427 PM CDT, a severe thunderstorm was located over Hennepin,
moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
DePue around 430 PM CDT.
Spring Valley and Granville around 440 PM CDT.
Ladd and Dalzell around 445 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4119 8946 4129 8947 4142 8916 4120 8916
TIME...MOT...LOC 2127Z 260DEG 26KT 4126 8935
HAIL...1.00IN
WIND...60MPH
$$
Uttech2 follow-up statements
200
WWUS53 KDVN 142138
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
438 PM CDT Wed Jul 14 2021
ILC011-155-142200-
/O.CON.KDVN.SV.W.0045.000000T0000Z-210714T2200Z/
Putnam IL-Bureau IL-
438 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTHEASTERN PUTNAM AND SOUTHEASTERN BUREAU COUNTIES...
At 438 PM CDT, a severe thunderstorm was located over Granville, or
near Hennepin, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Spring Valley around 445 PM CDT.
Other locations in the path of this severe thunderstorm include Ladd
and Dalzell.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4119 8936 4130 8940 4142 8916 4120 8916
TIME...MOT...LOC 2138Z 261DEG 23KT 4127 8928
HAIL...1.00IN
WIND...60MPH
$$
Uttech476
WWUS53 KDVN 142149
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
449 PM CDT Wed Jul 14 2021
ILC011-155-142200-
/O.CON.KDVN.SV.W.0045.000000T0000Z-210714T2200Z/
Putnam IL-Bureau IL-
449 PM CDT Wed Jul 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTHEASTERN PUTNAM AND SOUTHEASTERN BUREAU COUNTIES...
At 449 PM CDT, a severe thunderstorm was located over Granville, or
near Peru, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
northeastern Putnam and southeastern Bureau Counties, including the
following locations... Mark, Standard, Florid and Spring Valley
Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4122 8933 4132 8931 4134 8916 4122 8916
TIME...MOT...LOC 2149Z 262DEG 20KT 4128 8921
HAIL...1.00IN
WIND...60MPH
$$
UttechThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 11:40 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 35 min |
| Jul 14, 12:35 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 40 min |
| Jul 14, 1:07 PM CDT | Special Weather Statement | DVN | Rock Island | 38 min |
| Jul 14, 1:13 PM CDT | Special Weather Statement | DVN | Carroll, Jo Daviess, Stephenson, Whiteside | 32 min |
| Jul 14, 1:47 PM CDT | Special Weather Statement | DVN | Whiteside | 28 min |
| Jul 14, 2:03 PM CDT | Special Weather Statement | DVN | Stephenson | 42 min |
| Jul 14, 2:17 PM CDT | Special Weather Statement | DVN | Henry, Whiteside | 28 min |
| Jul 14, 2:49 PM CDT | Special Weather Statement | DVN | Bureau | 41 min |
| Jul 14, 3:30 PM CDT | Special Weather Statement | DVN | Bureau | 45 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning 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.