Alert archive / Illinois / Special Weather Statements in 2016
Special Weather Statement, NWS Quad Cities, IA
NWS Quad Cities, IA issued this special weather statement at Jun 9, 2016, 8:29 PM CDT for Stephenson County, Illinois. It was in force for 31 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 9, 2016, 8:29 PM CDT (01:29 UTC)
- Expired
- Jun 9, 2016, 9:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Quad Cities, IA
County Stephenson County, IL
The radar
The Milwaukee radar (KMKX), 104 km from the middle of the area, began a volume at 01:30 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 00:00Z, 1.5 hours before the alert went out and 115 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
- 647 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1158 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 633 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.1
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 Quad Cities, IA wrote its last area forecast discussion before this special weather statement went out at Jun 9, 6:11 PM CDT, 2 hours 18 minutes earlier.
Area forecast discussion, Jun 9, 6:11 PM CDT, 2 hours 18 minutes before
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</html>Hazardous weather outlook, Jun 9, 3:50 PM CDT, 4 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 350 PM CDT THU JUN 9 2016 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-102100- BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON- CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON- HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL- WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON- WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK- 350 PM CDT THU JUN 9 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A LOW RISK OF SEVERE THUNDERSTORMS IN EXTREME NORTHEAST IOWA AND NORTHERN ILLINOIS...ESPECIALLY THIS AFTERNOON AND EVENING. THE MAIN THREATS WILL BE HAIL UP TO THE SIZE OF A QUARTER AND WINDS OVER 40 MPH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY FRIDAY WILL BE HOT AND HUMID WITH AFTERNOON TEMPERATURES SOARING INTO THE LOWER TO MID 90S AND DEWPOINTS IN THE LOWER TO MID 60S. THIS WILL CREATE HEAT INDEX READINGS IN THE MID TO UPPER 90S. VERY WARM AND HUMID CONDITIONS WILL REMAIN PLACE OVER MUCH OF THE OUTLOOK AREA THROUGH THE WEEKEND. AFTERNOON HIGHS IN THE 80S TO LOWER 90S WILL RESULT IN HEAT INDEX READINGS IN THE MID AND UPPER 90S WHILE OVERNIGHT TEMPERATURES ONLY COOL INTO THE 60S TO LOWER 70S. THERE ARE LOW CHANCES FOR THUNDERSTORMS OVER THE WEEKEND, THEN GREATER CHANCES EACH DAY NEXT WEEK. THE POTENTIAL FOR SEVERE WEATHER OVER THE WEEKEND IS LOW...BUT LOCALLY HEAVY RAINFALL WILL BE POSSIBLE. IT IS TOO EARLY TOO ASSESS THE POTENTIAL FOR SEVERE WEATHER NEXT WEEK. HOWEVER...SEVERAL ROUNDS OF THUNDERSTORMS WITH POTENTIALLY HEAVY RAINFALL MAY LEAD TO RISES ON AREA RIVERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED THIS AFTERNOON OR TONIGHT. HAASE/SHEETS
In the hours before
Special weather statement, Jun 9, 7:28 PM CDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 728 PM CDT THU JUN 9 2016 ILC177-100100- STEPHENSON- 728 PM CDT THU JUN 9 2016 ...A STRONG THUNDERSTORM WILL AFFECT ... AT 727 PM CDT...A STRONG THUNDERSTORM WAS NEAR WINSLOW...OR 13 MILES NORTHWEST OF FREEPORT...MOVING EAST AT 20 MPH. DIME SIZE HAIL IS POSSIBLE WITH THIS STORM. TAKE SHELTER BEFORE THIS STORM ARRIVES AT YOUR LOCATION. LOCATIONS IMPACTED INCLUDE... DAVIS...DAKOTA...WINSLOW...ROCK CITY...BUENA VISTA...ROCK GROVE... ONECO...ORANGEVILLE...MC CONNELL...DAKOTA DORNINK AIRPORT... AFOLKEY...RED OAK AND LAKE SUMMERSET. LAT...LON 4250 8940 4236 8940 4242 8985 4250 8983 TIME...MOT...LOC 0027Z 273DEG 18KT 4244 8980 ERVIN
Special weather statement, Jun 9, 7:28 PM CDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 728 PM CDT THU JUN 9 2016 ILC177-100100- STEPHENSON- 728 PM CDT THU JUN 9 2016 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN STEPHENSON COUNTY... AT 727 PM CDT...A STRONG THUNDERSTORM WAS NEAR WINSLOW...OR 13 MILES NORTHWEST OF FREEPORT...MOVING EAST AT 20 MPH. DIME SIZE HAIL IS POSSIBLE WITH THIS STORM. TAKE SHELTER BEFORE THIS STORM ARRIVES AT YOUR LOCATION. LOCATIONS IMPACTED INCLUDE... DAVIS...DAKOTA...WINSLOW...ROCK CITY...BUENA VISTA...ROCK GROVE... ONECO...ORANGEVILLE...MC CONNELL...DAKOTA DORNINK AIRPORT... AFOLKEY...RED OAK AND LAKE SUMMERSET. LAT...LON 4250 8940 4236 8940 4242 8985 4250 8983 TIME...MOT...LOC 0027Z 273DEG 18KT 4244 8980 ERVIN
Local storm report, Jun 9, 7:39 PM CDT, 50 minutes before
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</html>Special weather statement, Jun 9, 8:29 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:28 PM CDT | Special Weather Statement | DVN | Stephenson | 32 min |
| Jun 9, 7:36 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 34 min |
Nearby
Special Weather Statements in Illinois, 2016Every special weather statement in 2016
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.