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 Jul 23, 2017, 6:52 PM CDT for Jersey County, Illinois. It was in force for 53 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 23, 2017, 6:52 PM CDT (23:52 UTC)
- Expired
- Jul 23, 2017, 7:45 PM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
County Jersey County, IL
The radar
The St Louis radar (KLSX), 51 km from the middle of the area, began a volume at 23:52 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, 11.9 hours before the alert went out and 190 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
- 2427 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 St. Louis, MO wrote its last area forecast discussion before this special weather statement went out at Jul 23, 6:31 PM CDT, 21 minutes earlier.
Area forecast discussion, Jul 23, 6:31 PM CDT, 21 minutes before
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</html>Hazardous weather outlook, Jul 23, 3:57 PM CDT, 2 hours 55 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 357 PM CDT Sun Jul 23 2017 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-241200- Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL- Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO- Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO- Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO- Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO- Madison MO-Reynolds MO- 357 PM CDT Sun Jul 23 2017 This hazardous weather outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Tonight An Excessive Heat Warning remains in effect for areas near and south of Interstate 70 through early this evening. Please see this product for additional information. Isolated strong to severe thunderstorms are possible this afternoon and evening for areas north and east of Saint Louis. Gusty winds and hail are the primary threats. .DAYS TWO THROUGH SEVEN...Monday through Saturday Dangerous heat index values between 105 and 110 degrees are expected to return to much of the area on Wednesday afternoon and early evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening for areas north and east of Saint Louis. Tilly
In the hours before
Special weather statement, Jul 23, 5:01 PM CDT, 1 hour 51 minutes before
Special Weather Statement National Weather Service St Louis MO 501 PM CDT SUN JUL 23 2017 ILZ058-059-099-232245- Macoupin IL-Greene IL-Jersey IL- 501 PM CDT SUN JUL 23 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN GREENE...WESTERN MACOUPIN AND NORTHEASTERN JERSEY COUNTIES UNTIL 545 PM CDT... At 501 PM CDT, Doppler radar was tracking a strong thunderstorm near Greenfield, moving south at 20 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Brighton, Greenfield, Shipman, Athensville, Kemper, Piasa, Medora, Wrights, Royal Lakes, Chesterfield, Hettick, Rockbridge, Scottville, Fidelity, Miles Station and Plainview. This also includes Beaver Dam State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3942 9033 3949 9011 3912 8987 3903 9020 TIME...MOT...LOC 2201Z 339DEG 19KT 3939 9019 Carney
Special weather statement, Jul 23, 5:14 PM CDT, 1 hour 38 minutes before
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</html>Local storm report, Jul 23, 5:53 PM CDT, 59 minutes before
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</html>Local storm report, Jul 23, 6:42 PM CDT, 10 minutes before
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</html>Special weather statement, Jul 23, 6:52 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 9:42 PM CDT | Special Weather Statement | LSX | Saint Louis | 48 min |
| Jul 22, 10:33 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 42 min |
| Jul 22, 11:34 PM CDT | Special Weather Statement | LSX | City of Saint Louis | 41 min |
| Jul 23, 12:21 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 54 min |
| Jul 23, 12:54 AM CDT | Severe Thunderstorm Warning | LSX | Callaway | 51 min |
| Jul 23, 1:08 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Monroe, Shelby | 52 min |
| Jul 23, 1:37 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Gasconade, Montgomery, Warren | 38 min |
| Jul 23, 1:46 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Warren | 44 min |
| Jul 23, 1:49 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Monroe, Montgomery, Pike, Ralls | 41 min |
| Jul 23, 2:17 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike, Saint Charles, Warren | 43 min |
| Jul 23, 2:38 AM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 52 min |
| Jul 23, 2:48 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike, Saint Charles, Saint Louis | 42 min |
| Jul 22, 11:11 PM CDT | Special Weather Statement | LSX | Madison | 49 min |
| Jul 23, 3:14 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 46 min |
| Jul 23, 3:19 AM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 41 min |
| Jul 23, 3:25 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin, Montgomery | 50 min |
| Jul 23, 3:48 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair, Washington | 42 min |
| Jul 23, 4:08 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Macoupin, Montgomery | 67 min |
| Jul 23, 4:24 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Marion, Washington | 52 min |
| Jul 23, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 30 min |
| Jul 23, 5:01 PM CDT | Special Weather Statement | LSX | Macoupin | 44 min |
| Jul 23, 5:14 PM CDT | Special Weather Statement | LSX | Pike | 46 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.