Alert archive / Illinois / Special Weather Statements in 2017
Special Weather Statement, NWS St. Louis, MO
NWS St. Louis, MO issued this special weather statement at Jun 16, 2017, 7:37 AM CDT for Greene County, Macoupin County, Montgomery County, Illinois. It was in force for 38 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 16, 2017, 7:37 AM CDT (12:37 UTC)
- Expired
- Jun 16, 2017, 8:15 AM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
Counties Greene County, IL, Macoupin County, IL, Montgomery County, IL
The radar
The Lincoln radar (KILX), 99 km from the middle of the area, began a volume at 12:37 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
Lincoln, IL (KILX), launched 12:00Z, 0.6 hours before the alert went out and 135 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
- 61 J/kg
- Mixed-layer CIN
- -277 J/kg
- Mixed-layer LCL
- 1308 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -167 m²/s²
- 0-3 km storm-relative helicity
- -56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
934
WWUS83 KLSX 161237
SPSLSX
Special Weather Statement
National Weather Service St Louis MO
737 AM CDT FRI JUN 16 2017
ILZ058>060-099-161315-
Macoupin IL-Montgomery IL-Greene IL-Jersey IL-
737 AM CDT FRI JUN 16 2017
...SIGNIFICANT WEATHER ADVISORY FOR GREENE...MACOUPIN...NORTHEASTERN
JERSEY AND NORTHWESTERN MONTGOMERY COUNTIES UNTIL 815 AM CDT...
At 736 AM CDT, Doppler radar was tracking a strong thunderstorm near
Athensville, moving east at 40 mph.
Nickel size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Litchfield, Hillsboro, Carlinville, Virden, White Hall, Carrollton,
Girard, Roodhouse, Greenfield, Raymond, White Oak, Farmersville,
Palmyra, Schram City, Athensville, Kemper, Patterson, Irving, Kane
and Wrights.
This includes Interstate 55 in Illinois between exits 60 and 63.
This also includes Beaver Dam State Park and Lake Lou Yaeger.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3917 8939 3919 9052 3952 9058 3952 8953
3935 8953 3935 8938
TIME...MOT...LOC 1236Z 254DEG 60KT 3943 9024
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 12:45 AM CDT | Special Weather Statement | LSX | Knox, Monroe, Shelby | 45 min |
| Jun 16, 1:06 AM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Shelby | 39 min |
| Jun 16, 1:36 AM CDT | Special Weather Statement | LSX | Lewis, Marion | 39 min |
| Jun 16, 2:01 AM CDT | Special Weather Statement | LSX | Monroe, Ralls | 44 min |
| Jun 16, 4:36 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 22 min |
| Jun 16, 2:25 AM CDT | Special Weather Statement | LSX | Brown, Pike | 50 min |
| Jun 16, 4:48 AM CDT | Special Weather Statement | LSX | Pike | 42 min |
| Jun 16, 6:43 AM CDT | Special Weather Statement | LSX | Greene | 47 min |
| Jun 16, 8:15 AM CDT | Special Weather Statement | LSX | Macoupin | 45 min |
| Jun 16, 4:21 PM CDT | Special Weather Statement | LSX | Fayette | 39 min |
| Jun 16, 4:26 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 31 min |
Nearby
Special Weather Statements in Illinois, 2017Every special weather statement in 2017
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.