Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 100, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Aug 25, 2021, 4:59 PM CDT for Bureau County, Putnam County, Illinois. It was in force for 46 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
- Aug 25, 2021, 4:59 PM CDT (21:59 UTC)
- Expired
- Aug 25, 2021, 5:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bureau County, IL, Putnam County, IL
The radar
The Quad Cities radar (KDVN), 108 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 103 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
- 818 J/kg
- Mixed-layer CIN
- -238 J/kg
- Mixed-layer LCL
- 1355 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
991
WUUS53 KDVN 252159
SVRDVN
ILC011-155-252245-
/O.NEW.KDVN.SV.W.0100.210825T2159Z-210825T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
459 PM CDT Wed Aug 25 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Western Putnam County in north central Illinois...
Southeastern Bureau County in north central Illinois...
* Until 545 PM CDT.
* At 459 PM CDT, severe thunderstorms were located along a line
extending from near Buda to near Bradford to Laura, moving east at
30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Tiskilwa around 515 PM CDT.
Other locations in the path of these severe thunderstorms include
Henry, Bureau Junction, Hennepin and DePue.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4110 8932 4110 8935 4111 8935 4112 8934
4115 8933 4115 8964 4123 8964 4134 8965
4133 8931
TIME...MOT...LOC 2159Z 274DEG 26KT 4136 8965 4115 8962 4091 8989
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gibbs2 follow-up statements
116
WWUS53 KDVN 252207
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
507 PM CDT Wed Aug 25 2021
ILC011-155-252245-
/O.CON.KDVN.SV.W.0100.000000T0000Z-210825T2245Z/
Putnam IL-Bureau IL-
507 PM CDT Wed Aug 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR WESTERN PUTNAM AND SOUTHEASTERN BUREAU COUNTIES...
At 507 PM CDT, severe thunderstorms were located along a line
extending from Wyanet to near Bradford to near Laura, moving east at
25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Tiskilwa, Henry, DePue, Bureau Junction and Hennepin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4110 8932 4110 8935 4111 8935 4112 8934
4115 8933 4115 8964 4123 8964 4134 8965
4133 8931
TIME...MOT...LOC 2207Z 270DEG 23KT 4135 8962 4114 8959 4090 8986
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gibbs219
WWUS53 KDVN 252235
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
535 PM CDT Wed Aug 25 2021
ILC011-155-252245-
/O.EXP.KDVN.SV.W.0100.000000T0000Z-210825T2245Z/
Putnam IL-Bureau IL-
535 PM CDT Wed Aug 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PUTNAM AND
SOUTHEASTERN BUREAU COUNTIES WILL EXPIRE AT 545 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Quad Cities.
LAT...LON 4110 8932 4110 8935 4111 8935 4112 8934
4115 8933 4115 8964 4123 8964 4134 8965
4133 8931
TIME...MOT...LOC 2235Z 274DEG 26KT 4134 8937 4113 8934 4089 8961
$$
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 7:22 PM CDT | Special Weather Statement | DVN | Henry | 53 min |
| Aug 25, 3:37 PM CDT | Special Weather Statement | DVN | Henry | 53 min |
| Aug 25, 3:39 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 36 min |
| Aug 25, 3:43 PM CDT | Tornado Warning | DVN | Henry | 17 min |
| Aug 25, 4:11 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 49 min |
| Aug 25, 4:46 PM CDT | Severe Thunderstorm Warning | DVN | Bureau | 29 min |
| Aug 25, 6:12 PM CDT | Special Weather Statement | DVN | McDonough | 33 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.