Alert archive / Illinois / Blizzard Warnings in 2015
Blizzard Warning 1, NWS Chicago, IL
NWS Chicago, IL issued this blizzard warning at Feb 1, 2015, 4:08 AM CST for 12 counties in Illinois; Lake County, Porter County, Indiana. It took effect at Feb 1, 2015, 10:29 AM CST. It was in force for 17 hr. 60 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 1, 2015, 4:08 AM CST (10:08 UTC)
- In effect from
- Feb 1, 2015, 10:29 AM CST
- Expired
- Feb 2, 2015, 3:00 AM CST
- In force
- 17 hr
- Issued by
- NWS Chicago, IL
Counties Boone County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Lake County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 42 km from the middle of the area, began a volume at 10:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 1, 10:30 AM CST | SNOW 9 | Gurnee, IL | |
| Feb 1, 10:51 AM CST | SNOW 11.5 | Somonauk, IL | BLOWING SNOW AS WELL. |
| Feb 1, 10:54 AM CST | HEAVY SNOW 7.2 | Portage, IN | 1.1 INCHES AN HOUR RATE. |
| Feb 1, 10:55 AM CST | SNOW 8.3 | North Aurora, IL | |
| Feb 1, 11:00 AM CST | SNOW 8.4 | Batavia, IL | UPDATED STORM TOTAL SO FAR. WINDS REALLY RAMPING UP. |
| Feb 1, 11:00 AM CST | SNOW 10.3 | 3 N Sugar Grove, IL | 0.7 IN THE PAST HOUR. |
| Feb 1, 11:01 AM CST | SNOW 7 | Glendale Heights, IL | VISIBILITY DOWN TO QUARTER MILE. |
| Feb 1, 11:07 AM CST | SNOW 4.5 | Belvidere, IL | SNOW IS BEGINNING TO DRIFT. |
| Feb 1, 11:20 AM CST | SNOW 10 | Yorkville, IL | |
| Feb 1, 11:25 AM CST | SNOW 7 | Schererville, IN | |
| Feb 1, 11:30 AM CST | SNOW 9.1 | Valparaiso, IN | |
| Feb 1, 11:55 AM CST | SNOW 9 | Loves Park, IL | RELAYED BY BROADCAST MEDIA. |
| Feb 1, 12:00 PM CST | SNOW 7.7 | Rockford, IL | |
| Feb 1, 12:00 PM CST | SNOW 9 | Batavia, IL | UPDATED STORM TOTAL SO FAR. |
| Feb 1, 12:00 PM CST | SNOW 9.5 | Lakes Of The Four Seaso, IN | STORM TOTAL SO FAR |
| Feb 1, 12:00 PM CST | SNOW 11 | 3 N Sugar Grove, IL | |
| Feb 1, 12:01 PM CST | SNOW 8.2 | Genoa, IL | STORM TOTAL SO FAR |
| Feb 1, 12:10 PM CST | SNOW 6 | Wayne, IL | SNOW TOTAL SO FAR |
| Feb 1, 12:19 PM CST | SNOW 12 | Harvard, IL | |
| Feb 1, 12:25 PM CST | SNOW 9 | 2 N Buffalo Grove, IL | |
| Feb 1, 12:30 PM CST | SNOW 8 | Libertyville, IL | |
| Feb 1, 12:42 PM CST | SNOW 7.5 | 2 W Gurnee, IL | |
| Feb 1, 12:50 PM CST | SNOW 7.2 | Woodstock, IL | STORM TOTAL SO FAR. NEAR WHITE OUT CONDITIONS IN OPEN AREAS TO THE NORTH OF WOODSTOCK THE PAST FEW HOURS. |
| Feb 1, 12:56 PM CST | SNOW 7.5 | Schererville, IN | |
| Feb 1, 1:00 PM CST | SNOW 9 | 3 Wnw Bull Valley, IL | |
| Feb 1, 1:15 PM CST | SNOW 10.1 | Batavia, IL | UPDATED STORM TOTAL. |
| Feb 1, 1:15 PM CST | SNOW 12.5 | Somonauk, IL | |
| Feb 1, 1:20 PM CST | SNOW 10 | St. Charles, IL | |
| Feb 1, 1:30 PM CST | SNOW 10 | Valparaiso, IN | |
| Feb 1, 1:31 PM CST | SNOW 12.3 | 1 W Roselle, IL | |
| Feb 1, 1:39 PM CST | SNOW 10.5 | De Kalb, IL | MEASURED THROUGH 130 PM |
| Feb 1, 1:45 PM CST | SNOW 10.5 | 1 E Woodridge, IL | STORM TOTAL AS OF 130 PM |
| Feb 1, 1:50 PM CST | SNOW 14 | Plano, IL | |
| Feb 1, 2:00 PM CST | SNOW 11 | Lombard, IL | |
| Feb 1, 2:00 PM CST | SNOW 12 | 3 N Sugar Grove, IL | |
| Feb 1, 2:30 PM CST | SNOW 10.2 | Lisle, IL | |
| Feb 1, 2:30 PM CST | SNOW 11.2 | Batavia, IL | UPDATED STORM TOTAL. |
| Feb 1, 2:45 PM CST | SNOW 8.2 | 4 N Chesterton, IN | |
| Feb 1, 2:45 PM CST | SNOW 11.5 | Downers Grove, IL | |
| Feb 1, 3:00 PM CST | SNOW 10.6 | 1 Se Bartlett, IL | |
| Feb 1, 3:00 PM CST | SNOW 13.1 | 3 N Sugar Grove, IL | |
| Feb 1, 3:11 PM CST | SNOW 12 | N De Kalb, IL | |
| Feb 1, 3:20 PM CST | SNOW 15 | Amboy, IL | ESTIMATED STORM TOTAL SO FAR RELAYED VIA FACEBOOK. |
| Feb 1, 3:28 PM CST | SNOW 10.5 | Schererville, IN | NEAR U.S 30 AND U.S. 41. |
| Feb 1, 3:30 PM CST | SNOW 11.2 | Valparaiso, IN | |
| Feb 1, 3:34 PM CST | SNOW 9.5 | Genoa, IL | |
| Feb 1, 3:44 PM CST | SNOW 15.3 | Somonauk, IL | |
| Feb 1, 3:45 PM CST | SNOW 13.5 | Yorkville, IL | |
| Feb 1, 3:52 PM CST | HEAVY SNOW 10.5 | Geneva, IL | |
| Feb 1, 3:52 PM CST | HEAVY SNOW 12 | Round Lake Beach, IL | |
| Feb 1, 4:00 PM CST | HEAVY SNOW 15 | 3 Wnw Bull Valley, IL | |
| Feb 1, 4:04 PM CST | HEAVY SNOW 11 | Ogden Dunes, IN | |
| Feb 1, 4:05 PM CST | HEAVY SNOW 12 | 5 E Chesterton, IN | 12.0 INCHES IN BURDICK. |
| Feb 1, 4:20 PM CST | HEAVY SNOW 9.7 | 2 Nne Lake Forest, IL | |
| Feb 1, 4:23 PM CST | HEAVY SNOW 11.5 | Morris, IL | |
| Feb 1, 4:25 PM CST | HEAVY SNOW 11 | N Aurora, IL | |
| Feb 1, 4:25 PM CST | HEAVY SNOW 13 | Zion, IL | STORM TOTAL RELAYED VIA TWITTER. |
| Feb 1, 4:27 PM CST | HEAVY SNOW 13.5 | Libertyville, IL | |
| Feb 1, 4:30 PM CST | HEAVY SNOW 12 | St. Charles, IL | |
| Feb 1, 4:35 PM CST | HEAVY SNOW 13 | De Kalb, IL | WHITEOUT CONDITIONS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 10.1 hours before the alert went out and 172 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 433 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
818 WWUS43 KLOT 011008 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 408 AM CST SUN FEB 1 2015 ILZ005-006-011>014-020-022-INZ001-011815- /O.NEW.KLOT.BZ.W.0001.150201T2000Z-150202T0600Z/ /O.EXT.KLOT.WS.W.0002.000000T0000Z-150201T2000Z/ MCHENRY-LAKE IL-DE KALB-KANE-DUPAGE-COOK-KENDALL-WILL-LAKE IN- INCLUDING THE CITIES OF...WOODSTOCK...WAUKEGAN...DEKALB... AURORA...WHEATON...CHICAGO...OSWEGO...JOLIET...GARY 408 AM CST SUN FEB 1 2015 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 2 PM CST THIS AFTERNOON... ...BLIZZARD WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO MIDNIGHT CST TONIGHT. A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM CST. * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE UNTIL EARLY EVENING. BLIZZARD CONDITIONS WILL DEVELOP LATE THIS AFTERNOON AND CONTINUE THIS EVENING...ESPECIALLY NEAR THE LAKE AND IN MORE OPEN AREAS. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS TO 40 MPH THIS AFTERNOON...WITH EVEN STRONGER WINDS NEAR THE LAKE. THE COMBINATION OF FALLING AND BLOWING SNOW WILL FREQUENTLY REDUCE VISIBILITIES TO NEAR ZERO IN WHITE OUT CONDITIONS LATE THIS AFTERNOON AND EVENING. * SNOW ACCUMULATIONS...10 TO 15 INCHES...WITH ISOLATED TOTALS UP TO 18 INCHES POSSIBLE. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. BY AFTERNOON...THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ023-033-039-INZ002-010-011-019-011815- /O.EXT.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ KANKAKEE-IROQUOIS-FORD-PORTER-NEWTON-JASPER-BENTON- INCLUDING THE CITIES OF...KANKAKEE...WATSEKA...PAXTON... VALPARAISO...MOROCCO...RENSSELAER...FOWLER 408 AM CST SUN FEB 1 2015 /508 AM EST SUN FEB 1 2015/ ...WINTER STORM WARNING NOW IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * TIMING...SNOW...POSSIBLY HEAVY AT TIMES...WILL CONTINUE THROUGH THIS EVENING. THE SNOW MAY MIX WITH SLEET OR DRIZZLE AT TIMES TODAY WELL SOUTH OF THE KANKAKEE AND ILLINOIS RIVERS. * SNOW ACCUMULATIONS...WIDESPREAD AMOUNTS OF 6 TO 12 INCHES ARE EXPECTED BY LATE THIS EVENING. THE HEAVIEST TOTALS SHOULD BE NEAR AND NORTH OF THE KANKAKEE RIVER...WITH THE LIGHTEST AMOUNTS SOUTH OF U.S. HIGHWAY 24. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. STRONG NORTHEAST WINDS WILL DEVELOP THIS EVENING AND COULD RESULT IN BLOWING AND DRIFTING SNOW...ESPECIALLY NEAR AND NORTH OF THE KANKAKEE RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ ILZ003-004-008-010-019-021-032-011815- /O.CON.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ WINNEBAGO-BOONE-OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON- INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...OREGON...DIXON... OTTAWA...MORRIS...PONTIAC 408 AM CST SUN FEB 1 2015 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE UNTIL EARLY EVENING. NEAR BLIZZARD CONDITIONS WILL DEVELOP THIS AFTERNOON AND CONTINUE INTO THIS EVENING. * SNOW ACCUMULATIONS...10 TO 14 INCHES...WITH ISOLATED HIGHER AMOUNTS POSSIBLE. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 35 MPH THIS AFTERNOON. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO LATE THIS AFTERNOON AND EVENING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE DEVELOPING NEAR BLIZZARD CONDITIONS THIS AFTERNOON WILL MAKE TRAVEL EXTREMELY DANGEROUS FROM MID AFTERNOON INTO THIS EVENING. IF IT APPEARS CONDITIONS WILL BE ANY WORSE THAN AN UPGRADE TO A BLIZZARD WARNING COULD OCCUR TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ IZZI VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
5 follow-up statements
491 WWUS43 KLOT 011629 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 1029 AM CST SUN FEB 1 2015 ILZ003-004-008-010-019-021-020030- /O.CAN.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ /O.EXB.KLOT.BZ.W.0001.150201T1629Z-150202T0600Z/ WINNEBAGO-BOONE-OGLE-LEE-LA SALLE-GRUNDY- INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...OREGON...DIXON... OTTAWA...MORRIS 1029 AM CST SUN FEB 1 2015 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. THIS REPLACES THE WINTER STORM WARNING. * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE INTO THIS EVENING. BLIZZARD CONDITIONS WILL ALSO DEVELOP AND CONTINUE THIS EVENING. * SNOW ACCUMULATIONS...10 TO 16 INCHES...WITH ISOLATED HIGHER AMOUNTS POSSIBLE. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 45 MPH THIS AFTERNOON. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO LATE THIS AFTERNOON AND EVENING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. BY AFTERNOON...THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ005-006-011>014-020-022-INZ001-020030- /O.CAN.KLOT.WS.W.0002.000000T0000Z-150201T2000Z/ /O.EXT.KLOT.BZ.W.0001.150201T1629Z-150202T0600Z/ MCHENRY-LAKE IL-DE KALB-KANE-DUPAGE-COOK-KENDALL-WILL-LAKE IN- INCLUDING THE CITIES OF...WOODSTOCK...WAUKEGAN...DEKALB... AURORA...WHEATON...CHICAGO...OSWEGO...JOLIET...GARY 1029 AM CST SUN FEB 1 2015 ...BLIZZARD WARNING NOW IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...WINTER STORM WARNING IS CANCELLED... THE BLIZZARD WARNING REPLACES THE WINTER STORM WARNING. * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE THROUGH THIS EVENING. BLIZZARD CONDITIONS WILL ALSO DEVELOP...ESPECIALLY NEAR THE LAKE AND IN MORE OPEN AREAS. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS TO 40 MPH THIS AFTERNOON...WITH EVEN STRONGER WINDS NEAR THE LAKE. THE COMBINATION OF FALLING AND BLOWING SNOW WILL FREQUENTLY REDUCE VISIBILITIES TO NEAR ZERO IN WHITE OUT CONDITIONS LATE THIS AFTERNOON AND EVENING. * SNOW ACCUMULATIONS...12 TO 16 INCHES...WITH ISOLATED TOTALS UP TO 18 INCHES POSSIBLE. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. BY AFTERNOON...THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ023-032-033-039-INZ002-010-011-019-020030- /O.CON.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ KANKAKEE-LIVINGSTON-IROQUOIS-FORD-PORTER-NEWTON-JASPER-BENTON- INCLUDING THE CITIES OF...KANKAKEE...PONTIAC...WATSEKA...PAXTON... VALPARAISO...MOROCCO...RENSSELAER...FOWLER 1029 AM CST SUN FEB 1 2015 /1129 AM EST SUN FEB 1 2015/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * TIMING...SNOW...POSSIBLY HEAVY AT TIMES...WILL CONTINUE THROUGH THIS EVENING. THE SNOW MAY MIX WITH SLEET AT TIMES TODAY WELL SOUTH OF THE KANKAKEE AND ILLINOIS RIVERS. * SNOW ACCUMULATIONS...WIDESPREAD AMOUNTS OF 8 TO 12 INCHES ARE EXPECTED BY LATE THIS EVENING. THE HEAVIEST TOTALS SHOULD BE NEAR AND NORTH OF THE KANKAKEE RIVER...WITH THE LIGHTEST AMOUNTS SOUTH OF U.S. HIGHWAY 24. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. STRONG NORTHEAST WINDS WILL DEVELOP THIS EVENING AND COULD RESULT IN BLOWING AND DRIFTING SNOW...ESPECIALLY NEAR AND NORTH OF THE KANKAKEE RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ KJB VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
132 WWUS43 KLOT 011950 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 150 PM CST SUN FEB 1 2015 INZ002-020400- /O.CAN.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ /O.EXA.KLOT.BZ.W.0001.000000T0000Z-150202T0600Z/ PORTER- INCLUDING THE CITY OF...VALPARAISO 150 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT CST TONIGHT. THIS REPLACES THE WINTER STORM WARNING. * TIMING...SNOW...POSSIBLY HEAVY AT TIMES...WILL CONTINUE THROUGH THIS EVENING. * SNOW ACCUMULATIONS...WIDESPREAD AMOUNTS OF 10 TO 15 INCHES ARE EXPECTED BY LATE THIS EVENING. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 45 MPH BY EARLY THIS EVENING. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO LATE THIS AFTERNOON AND EVENING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ003>006-008-010>014-019>022-INZ001-020400- /O.CON.KLOT.BZ.W.0001.000000T0000Z-150202T0600Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL-LAKE IN- INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK... WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO... OTTAWA...OSWEGO...MORRIS...JOLIET...GARY 150 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * TIMING...SNOW...HEAVY AT TIMES...WILL CONTINUE INTO THIS EVENING. BLIZZARD CONDITIONS WILL ALSO DEVELOP AND CONTINUE THIS EVENING. * SNOW ACCUMULATIONS...10 TO 16 INCHES...WITH ISOLATED HIGHER AMOUNTS POSSIBLE. * WINDS/VISIBILITY...NORTHEAST WINDS WILL INCREASE TO 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 45 MPH LATE THIS AFTERNOON. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO LATE THIS AFTERNOON AND EVENING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ023-032-033-039-INZ010-011-019-020400- /O.CON.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ KANKAKEE-LIVINGSTON-IROQUOIS-FORD-NEWTON-JASPER-BENTON- INCLUDING THE CITIES OF...KANKAKEE...PONTIAC...WATSEKA...PAXTON... MOROCCO...RENSSELAER...FOWLER 150 PM CST SUN FEB 1 2015 /250 PM EST SUN FEB 1 2015/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * TIMING...SNOW...POSSIBLY HEAVY AT TIMES...WILL CONTINUE THROUGH THIS EVENING. * SNOW ACCUMULATIONS...WIDESPREAD AMOUNTS OF 8 TO 12 INCHES ARE EXPECTED BY LATE THIS EVENING. THE HEAVIEST TOTALS SHOULD BE NEAR AND NORTH OF THE KANKAKEE RIVER...WITH THE LIGHTEST AMOUNTS SOUTH OF U.S. HIGHWAY 24. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. STRONG NORTHEAST WINDS WILL DEVELOP THIS EVENING AND COULD RESULT IN BLOWING AND DRIFTING SNOW...ESPECIALLY NEAR AND NORTH OF THE KANKAKEE RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ KJB VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
564 WWUS43 KLOT 020300 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 900 PM CST SUN FEB 1 2015 INZ001-002-020900- /O.EXT.KLOT.BZ.W.0001.000000T0000Z-150202T0900Z/ LAKE IN-PORTER- INCLUDING THE CITIES OF...GARY...VALPARAISO 900 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING NOW IN EFFECT UNTIL 3 AM CST MONDAY... * TIMING...SNOW WILL CONTINUE THROUGH EARLY MONDAY MORNING WITH BLIZZARD CONDITIONS. * SNOW ACCUMULATIONS...NEW ACCUMULATION 1 TO 3 INCHES. STORM TOTAL ACCUMULATION 12 TO 18 INCHES. * WINDS/VISIBILITY...NORTHEAST WINDS 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 45 MPH WILL SLOWLY DIMINISH OVERNIGHT. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO THROUGH EARLY MONDAY MORNING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ003>006-008-010>014-019>022-020600- /O.CON.KLOT.BZ.W.0001.000000T0000Z-150202T0600Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL- INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK... WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO... OTTAWA...OSWEGO...MORRIS...JOLIET 900 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * TIMING...SNOW WILL SLOWLY TAPER OFF TO FLURRIES OVERNIGHT WITH BLIZZARD CONDITIONS THIS EVENING. * SNOW ACCUMULATIONS...NEW SNOW ACCUMULATION 1 TO 2 INCHES NEAR THE LAKE AND LESS THAN ONE INCH ELSEWHERE. STORM TOTAL ACCUMULATIONS 12 TO 18 INCHES. * WINDS/VISIBILITY...NORTH WINDS 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 40 MPH WILL DIMINISH OVERNIGHT. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO A QUARTER MILE OR LESS THIS EVENING. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ ILZ023-032-033-039-INZ010-011-019-020600- /O.CON.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ KANKAKEE-LIVINGSTON-IROQUOIS-FORD-NEWTON-JASPER-BENTON- INCLUDING THE CITIES OF...KANKAKEE...PONTIAC...WATSEKA...PAXTON... MOROCCO...RENSSELAER...FOWLER 900 PM CST SUN FEB 1 2015 /1000 PM EST SUN FEB 1 2015/ ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * TIMING...SNOW WILL TAPER OFF TO FLURRIES OVERNIGHT. * SNOW ACCUMULATIONS...NEW SNOW ACCUMULATION 1 TO 2 INCHES. STORM TOTAL ACCUMULATION 8 TO 12 INCHES. THE HEAVIEST TOTALS SHOULD BE NEAR AND NORTH OF THE KANKAKEE RIVER...WITH THE LIGHTEST AMOUNTS SOUTH OF U.S. HIGHWAY 24. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. STRONG NORTH WINDS WILL RESULT IN BLOWING AND DRIFTING SNOW... ESPECIALLY NEAR AND NORTH OF THE KANKAKEE RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
379 WWUS43 KLOT 020557 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 1157 PM CST SUN FEB 1 2015 ILZ003>006-008-010>014-019>022-020700- /O.EXP.KLOT.BZ.W.0001.000000T0000Z-150202T0600Z/ WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL- INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK... WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO... OTTAWA...OSWEGO...MORRIS...JOLIET 1157 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... BANDS OF MODERATE SNOW SHOWERS WILL CONTINUE ACROSS LAKE...COOK AND WILL COUNTIES INTO THE EARLY OVERNIGHT HOURS. THIS...COMBINED WITH WINDS GUSTING TO AROUND 30 MPH...WILL ALLOW VISIBILITY TO FALL TO AROUND ONE HALF MILE AT TIMES. AREAS NEAR THE LAKEFRONT WILL SEE GUSTS NEAR 40 MPH. SNOW IS EXPECTED TO PUSH TO THE EAST OVERNIGHT WITH WINDS STEADILY DECREASING...ESPECIALLY INLAND. ADDITIONAL SNOW ACCUMULATION OF AN INCH IS POSSIBLE...WITH ISOLATED 2 INCH AMOUNTS. $$ ILZ023-032-033-039-INZ010-011-019-020700- /O.EXP.KLOT.WS.W.0002.000000T0000Z-150202T0600Z/ KANKAKEE-LIVINGSTON-IROQUOIS-FORD-NEWTON-JASPER-BENTON- INCLUDING THE CITIES OF...KANKAKEE...PONTIAC...WATSEKA...PAXTON... MOROCCO...RENSSELAER...FOWLER 1157 PM CST SUN FEB 1 2015 /1257 AM EST MON FEB 2 2015/ ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST /1 AM EST/ TONIGHT... LIGHT SNOW WILL CONTINUE THROUGH THE EARLY OVERNIGHT THOUGH SOME BRIEF BURSTS OF MODERATE SNOW ARE POSSIBLE. ADDITIONAL ACCUMULATION OF LESS THAN AN INCH IS EXPECTED. $$ INZ001-002-020900- /O.CON.KLOT.BZ.W.0001.000000T0000Z-150202T0900Z/ LAKE IN-PORTER- INCLUDING THE CITIES OF...GARY...VALPARAISO 1157 PM CST SUN FEB 1 2015 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 3 AM CST MONDAY... * TIMING...SNOW WILL CONTINUE THROUGH EARLY MONDAY MORNING WITH BLIZZARD CONDITIONS. * SNOW ACCUMULATIONS...NEW ACCUMULATION 1 TO 3 INCHES. STORM TOTAL ACCUMULATION 12 TO 18 INCHES. * WINDS/VISIBILITY...NORTHEAST WINDS 20 TO 30 MPH WITH OCCASIONAL GUSTS TO 45 MPH WILL SLOWLY DIMINISH OVERNIGHT. THE COMBINATION OF FALLING AND BLOWING SNOW WILL OCCASIONALLY REDUCE VISIBILITIES TO NEAR ZERO THROUGH EARLY MONDAY MORNING IN NEAR WHITE OUT CONDITIONS. * MAIN IMPACT...SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. THE COMBINATION OF THE SNOW AND VERY STRONG WINDS WILL MAKE TRAVEL EXTRAORDINARILY DANGEROUS. * SECONDARY IMPACT...THE COMBINATION OF STRONG NORTHEAST WINDS AND SNOW COVERED POWER LINES MAY LEAD TO ISOLATED POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ MDB VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
761 WWUS43 KLOT 020853 WSWLOT URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO IL 253 AM CST MON FEB 2 2015 INZ001-002-021000- /O.EXP.KLOT.BZ.W.0001.000000T0000Z-150202T0900Z/ LAKE IN-PORTER- INCLUDING THE CITIES OF...GARY...VALPARAISO 253 AM CST MON FEB 2 2015 ...BLIZZARD WARNING WILL EXPIRE AT 3 AM CST EARLY THIS MORNING... WINDS WILL CONTINUE TO DECREASE IN LAKE AND PORTER COUNTIES THIS MORNING. LAKE EFFECT SNOW WILL CONTINUE AT TIMES THROUGH THE MORNING...WITH LOCAL ACCUMULATIONS OF 1 TO 2 INCHES STILL POSSIBLE. WIND GUSTS TO 30 MPH WILL ALSO EASE THROUGH THE MORNING. $$ KMD VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
What forecasters said that day
The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Chicago, IL wrote its last area forecast discussion before this blizzard warning went out at Feb 1, 3:47 AM CST, 21 minutes earlier.
Area forecast discussion, Feb 1, 3:47 AM CST, 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
347 AM CST SUN FEB 1 2015
.SHORT TERM...
347 AM CST
THROUGH MONDAY...
HAVE BEEN SWAMPED THIS MORNING AND AM RUNNING BEHIND...SO GOING TO
KEEP DISCUSSION BRIEF THIS MORNING AND JUST HIT THE IMPORTANT
CHANGES. THE BIGGEST CHANGES TO GOING FORECAST IS THE UPGRADE TO
A BLIZZARD WARNING FOR PORTIONS OF NE IL/CHICAGO METRO AND TO
LOWER SNOW AMOUNTS AND ADD MIXED PRECIP BACK INTO GRIDS FAR SE
CWA.
GUIDANCE HAS CONTINUED TO TREND NORTH AND STRONGER WITH THE TRACK OF
THIS SYSTEM AND COMPARING GUIDANCE WITH SFC OBS AND BEST SFC
PRESSURE FALLS IT WOULD SEEM TO SUPPORT THE FARTHER NORTH TRACK THAT
THE RAP IN PARTICULAR HAS LATCHED ONTO. THE SOMEWHAT DEEPER LOW
ALONG WITH THE VERY STRONG ARCTIC HIGH SPREADING SOUTHEAST WILL
RESULT IN VERY STRONG WINDS DEVELOPING THIS AFTERNOON. INCREASING
LOW LEVEL COLD AIR ADVECTION AND SFC HEIGHT RISES FAVOR PRETTY GOOD
MIXING IN THE BOUNDARY LAYER...WHICH IS WHAT ALL MODEL FORECAST
SOUNDINGS ARE ADVERTISING. TAKING EVEN THE BEST CASE SCENARIO AND
ONE OF THE WEAKEST MODELS BUFKIT MOMENTUM TRANSFER VALUES SUPPORT
4-7 HOURS OF WIND GUSTS BETWEEN 35-40 MPH LATER THIS AFTERNOON AND
EVENING...WITH MORE AGGRESSIVE GFS/RAP SUPPORTING EVEN STRONGER
WINDS OVER A LONGER DURATION. SNOW HAS BEEN WET THUS FAR BUT WITH
TIME SHOULD SEE THE TRANSITION TOWARD DRIER/MORE BLOWABLE SNOW THIS
AFTERNOON FROM NORTH TO SOUTH AS THE COLUMN COOLS AND THE SNOW
LIQUID CONTENT DECREASES. BIGGEST UNCERTAINTY REVOLVES AROUND
REGARDING UPGRADE TO BLIZZARD WARNING WAS THE SNOW LIQUID CONTENT
AND PROBABILITY AND CONFIDENCE IS CERTAINLY HIGHER THE FARTHER NORTH
FROM I-80 THAT YOU GET...BUT EVEN AS FAR SOUTH AS I-80 FELT FAIRLY
CONFIDENT THAT WHITE OUT CONDITIONS COULD DEVELOP LATE THIS
AFTERNOON AND ESPECIALLY THIS EVENING. FARTHER WEST ACROSS NORTH
CENTRAL ILLINOIS FEEL THAT A BLIZZARD WARNING COULD EASILY BE
JUSTIFIED...BUT IN COORDINATION WITH MKX/DVN HAVE OPTED TO HOLD OFF
FOR NOW AS SNOW INTENSITY COULD BE DECREASING AS WINDS PICK UP.
QUITE POSSIBLE DAY SHIFT MAY NEED TO RE-ACCESS THIS AND AN UPGRADE
TO BLIZZARD WARNING FOR RFD AND POINTS WEST COULD OCCUR ON THE DAY
SHIFT.
OTHER BIG CHANGE TO FORECAST WAS TO ADD SLEET AND THEN DRIZZLE TO
THE FAR SOUTHEAST CWA. SFC TEMPS HAVE BEEN A BIT WARMER AND THE
FARTHER NORTH TRACK OF THE SFC LOW SHOULD KEEP LOW LEVEL WAA GOING
INTO EARLY AFTERNOON WITH AT LEAST THE THREAT OF MIXED
PRECIP...POSSIBLY TRANSITIONING OVER TO JUST DRIZZLE/SNIZZLE AS MID
LEVEL DRY SLOT OVERSPREADS THAT AREA REMOVING ICE NUCLEI FROM THE
CLOUDS LATE THIS AFTERNOON INTO THIS EVENING. THE WETTER SNOW SOUTH
OF I-80 SHOULD RESULT IN LESS SEVERE AND LESS IMPACTFUL
BLOWING/DRIFTING SNOW. GIVEN THE MARGINAL TEMPS AND POTENTIAL MIX
PRECIP HAVE CUT BACK ON ACCUMS IN THE FAR SOUTHEAST COUNTIES OF THE
CWA.
ACCUMULATING LAKE EFFECT POTENTIAL ACTUALLY LOOKS SOMEWHAT LESS
IMPRESSIVE THAN IT DID LAST NIGHT...AND IT WAS ALREADY LOOKING
MARGINAL. SOME SYSTEM SNOWS SHOULD LINGER INTO THIS EVENING BUT LAKE
CONTRIBUTIONS LOOK MINOR WITH LOW INVERSION HEIGHTS AND DECREASING
BOUNDARY LAYER RH AS THE THERMODYNAMICS IMPROVE EVER SO SLIGHTLY.
ANY LAKE ENHANCEMENT TO SNOW TOTALS SHOULD END UP BEING TRIVIAL.
FINALLY...GOING SNOWFALL TOTALS LOOK RIGHT ON TARGET AND MADE VERY
FEW CHANGES OTHER THAN IN SE AS NOTED ABOVE. A RESPECTABLY LARGE
SWATH OF A FOOT OR MORE OF SNOW STILL LOOKS LIKELY AND PROBABLY
CENTERED RELATIVELY CLOSE TO THE I-80 TO I-88/290 CORRIDORS.
ACTUALLY THINKING THAT MAX SNOWFALL TOTALS IN THE CWA COULD END UP
BEING ON THE HIGH END OF THE 10-14 INCH RANGE WITH LOCALIZED TOTALS
POTENTIALLY PUSHING A FOOT AND A HALF IF THE DEFO BAND IS INDEED AS
IMPRESSIVE AS SOME OF THE GUIDANCE WOULD SUGGEST. WHILE SNOWFALL
TOTALS WILL BE VERY IMPRESSIVE OVER MOST OF THE CWA...IT IS
IMPORTANT TO REMEMBER THE BLIZZARD WARNING IS ISSUED NOT FOR
SNOWFALL AMOUNTS BUT RATHER FOR VISIBILITY AND WINDS. THE CRITERIA
FOR BLIZZARD WARNING IS 3+ HOURS OF LESS THAN 1/4SM VSBY IN FALLING
AND/OR BLOWING SNOW ALONG WITH SUSTAINED WINDS OR FREQUENT GUSTS
OVER 35 MPH.
IZZI
&&
.LONG TERM...
MONDAY NIGHT THROUGH SATURDAY...
134 AM...FORECAST CONCERNS INCLUDE A CHANCE OF LIGHT SNOW MONDAY
NIGHT INTO TUESDAY...THEN A BETTER CHANCE FOR ACCUMULATING LIGHT
SNOW TUESDAY NIGHT INTO WEDNESDAY MORNING.
A RIDGE OF HIGH PRESSURE WILL BE MOVING SOUTHEAST OF THE AREA
MONDAY EVENING AS A WEAK WAVE MOVES ACROSS THE REGION MONDAY NIGHT.
FAIRLY LIGHT QPF FROM ALL THE MODELS WITH THIS WAVE BUT PLENTY COLD
ENOUGH FOR THE LOW QPF AMOUNTS TO POTENTIALLY FLUFF UP TO A HALF
INCH MONDAY NIGHT. WHILE TEMPS BY THIS TIME WILL LIKELY BE IN THE
SINGLE DIGITS OR LOW TEENS...CLOUD COVER AND WEAK WARM AIR ADVECTION
MAY ALLOW TEMPS TO HOLD STEADY OR RISE A FEW DEGREES OVERNIGHT.
NEXT WAVE QUICKLY SHIFTS SOUTHEAST ACROSS THE AREA BY TUESDAY
EVENING WITH QPF AMOUNTS BETWEEN ONE AND TWO TENTHS. THIS HAS BEEN
A FAIRLY CONSISTENT FEATURE ON THE MODELS AND IF THIS MATERIALIZES
AS ADVERTISED...A FEW INCHES OF SNOW WILL BE POSSIBLE. TIMING AND
LOCATION ALSO ARE A BIT UNCERTAIN...EARLIER COULD IMPACT THE TUESDAY
EVENING RUSH...LATER COULD IMPACT THE WEDNESDAY MORNING RUSH. BUT
GIVEN THE POTENTIAL FOR SOME ACCUMULATION...OPTED TO BUMP POPS UP TO
LIKELY FOR TUESDAY NIGHT.
HIGH PRESSURE THEN SETTLES SOUTH ACROSS THE MIDWEST AND LAKES REGION
WEDNESDAY INTO THURSDAY AND WITH IT...SOME VERY COLD AIR. WITH A
DEEP SNOWPACK BY THAT TIME AND DIMINISHING WINDS WEDNESDAY NIGHT
INTO THURSDAY...EXPECT MANY LOCATIONS TO DROP BELOW ZERO FOR LOWS
THURSDAY MORNING. THE AIRMASS MODIFIES/WARMS SOME THURSDAY BUT
STILL EXPECTING LOWS IN THE LOWER SINGLE DIGITS THURSDAY EVENING...
POSSIBLY BELOW ZERO BUT WARM AIR ADVECTION BY MORNING WITH
INCREASING SOUTHERLY WINDS MAY PUT THE BRAKES ON HOW LOW TEMPS FALL
THURSDAY NIGHT. STRONG SOUTHERLY WINDS CONTINUE INTO SATURDAY WITH
WARMING TEMPS...THAT WILL LIKELY BE MUTED SOME BY THE SNOWPACK. CMS
&&
.AVIATION...
//ORD AND MDW CONCERNS...UPDATED 09Z...
* SNOW THRU THE PERIOD. VISIBILITIES GENERALLY AROUND 3/4SM...WITH
OCNL PERIODS OF VIS AS LOW AS 1/4SM POSSIBLE ESPECIALLY THIS
AFTERNOON.
* STRONG NORTHEAST WINDS SUNDAY...GUSTING UP TO 35 KT.
* BLOWING SNOW SUNDAY AND SUNDAY NIGHT.
* IFR/LIFR CIGS THRU THE PERIOD.
KREIN
//DISCUSSION...UPDATED 06Z...
LONG DURATION SNOW EVENT UNDERWAY AS LOW PRESSURE OVER KANSAS
MOVES EAST TO SOUTHERN INDIANA BY SUNDAY EVENING AS IT SLOWLY
STRENGTHENS. MOISTURE STREAMING NORTH FROM THE GULF WILL ALLOW
THIS SYSTEM TO PRODUCE MODERATE SNOW THROUGH SUNDAY EVENING...
BEFORE SLOWLY TAPERING OFF LATE SUNDAY EVENING AND EARLY MONDAY
MORNING. VISIBILITIES WILL LIKELY FLUCTUATE FROM TIME TO TIME
BUT PREVAILING VIS LIKELY TO BE AROUND 1/2SM FOR MUCH OF THE
EVENT.
AS THE GRADIENT STRENGTHENS SUNDAY MORNING...NORTHEAST WINDS
WILL INCREASE UP TO 20KTS WITH GUSTS 30-35KTS FOR MUCH OF THE
AFTERNOON AND EVENING. THESE STRONG WINDS WILL PRODUCE BLOWING
AND DRIFTING SNOW THAT MAY REDUCE VISIBILITIES UNDER 1/2SM AT
TIMES. THE WINDS WILL TURN MORE NORTHERLY SUNDAY EVENING AND
THEN BEGIN TO DIMINISH EARLY MONDAY MORNING. CMS
//ORD AND MDW CONFIDENCE...UPDATED 09Z...
* HIGH FOR SNOW/VIS THRU THE PERIOD.
* HIGH FOR WINDS/GUSTS THRU THE PERIOD.
* HIGH FOR BLOWING SNOW SUNDAY/SUNDAY NIGHT.
KREIN
//OUTLOOK FOR ORD/MDW FOR 12Z MONDAY-12Z SATURDAY...UPDATED 00Z...
MONDAY...CHANCE LINGERING SNOW SHOWERS IN THE MORNING. CHANCE OF
SNOW AGAIN AFTER MIDNIGHT. MVFR CIGS/VIS LIKELY. IFR POSSIBLE.
TUESDAY...CHANCE SNOW. PERIODS OF MVFR CIGS/VIS LIKELY...IFR VSBY
POSSIBLE.
WEDNESDAY...SLIGHT CHANCE SNOW THROUGH EARLY EVENING. PERIODS OF
MVFR CIGS/VIS POSSIBLE. VFR/WX NIL OVERNIGHT.
THURSDAY...VFR/WX NIL.
FRIDAY...VFR/WX NIL.
MDB
&&
.MARINE...
315 AM CST
THE SFC LOW OVER THE PLAINS LOOKS TO BE DEEPENING A LITTLE FASTER
AND LOWER WHILE THE HIGH PRESSURE RIDGING OVER THE UPPER GREAT
LAKES IS TRENDING A LITTLE STRONGER. THIS COMBINATION WITH STRONG
COLD ADVECTION SETTING UP OVER THE LAKE TODAY...HAVE EXPANDED THE
GALE WARNING OVER THE ENTIRE OPEN WATERS OF LAKE MICHIGAN AS WELL
AS EXTENDING IN TIME...STARTING A LITTLE EARLIER...AT 15Z THIS
MORNING AND GOING A LITTLE LATER...TO 09Z TONIGHT. ALSO...HAVE
INCREASED GALES TO 40KT OVER THE SOUTHERN PORTIONS OF THE LAKE
WHERE THE PRESSURE GRADIENT AND PRESSURE FALLS ARE STRONGEST. AS
THE WINDS PICK UP TO GALE FORCE AND MUCH COLDER AIR FILTERS OVER
THE LAKE LATER TODAY...HEAVY FREEZING SPRAY WILL BE LIKELY...SO
HAVE ALSO ISSUED A HEAVY FREEZING SPRAY WARNING FROM 15Z THIS
MORNING TO 09Z TONIGHT. THE COLDER AIR WILL SPREAD OVER THE
NORTHERN PORTIONS OF THE LAKE EARLIER THAN THE SOUTHERN
PORTIONS...SO IT IS POSSIBLE THAT THE HEAVY FREEZING SPRAY
POTENTIAL MAY NOT REACH THE SOUTHERN PORTIONS OF THE LAKE UNTIL
THIS AFTERNOON...BUT WENT WITH ONE SEGMENT TO THE WARNING TO
COINCIDE WITH THE GALE WARNING TIMING. THE LOW SHOULD PUSH EAST
INTO THE MID ATLANTIC REGION BE MONDAY AFTERNOON...WHILE HIGH
PRESSURE SPREADS ACROSS THE MISSISSIPPI RIVER INTO THE WESTERN
GREAT LAKES REGION. THIS WILL LEAD TO SUBSIDING WINDS AND
WAVES...ESPECIALLY AS WEAK HIGH PRESSURE PRESSURE CROSSES THE LAKE
MONDAY NIGHT AND TUESDAY.
KREIN
&&
.LOT WATCHES/WARNINGS/ADVISORIES...
IL...WINTER STORM WARNING...ILZ005-ILZ006-ILZ011-ILZ012-ILZ013-ILZ014-
ILZ020-ILZ022 UNTIL 2 PM SUNDAY.
BLIZZARD WARNING...ILZ005-ILZ006-ILZ011-ILZ012-ILZ013-ILZ014-
ILZ020-ILZ022...2 PM SUNDAY TO MIDNIGHT MONDAY.
WINTER STORM WARNING...ILZ003-ILZ004-ILZ008-ILZ010-ILZ019-ILZ021-
ILZ023-ILZ032-ILZ033-ILZ039 UNTIL MIDNIGHT MONDAY.
IN...BLIZZARD WARNING...INZ001...2 PM SUNDAY TO MIDNIGHT MONDAY.
WINTER STORM WARNING...INZ001 UNTIL 2 PM SUNDAY.
WINTER STORM WARNING...INZ002-INZ010-INZ011-INZ019 UNTIL
MIDNIGHT MONDAY.
LM...GALE WARNING...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-
LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ740-LMZ741-LMZ742-
LMZ743-LMZ744-LMZ745-LMZ777-LMZ779-LMZ868-LMZ870-LMZ872-
LMZ874-LMZ876-LMZ878...9 AM SUNDAY TO 3 AM MONDAY.
HEAVY FREEZING SPRAY WARNING...LMZ080-LMZ261-LMZ362-LMZ364-
LMZ366-LMZ563-LMZ565-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-
LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745-LMZ777-LMZ779-
LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...9 AM SUNDAY TO
3 AM MONDAY.
SMALL CRAFT ADVISORY...ILLINOIS NEARSHORE WATERS UNTIL 9 AM SUNDAY.
&&
VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)
FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSCHICAGO
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGOHazardous weather outlook, Jan 31, 3:52 PM CST, 12 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 352 PM CST SAT JAN 31 2015 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 012200- WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON- 352 PM CST SAT JAN 31 2015 /452 PM EST SAT JAN 31 2015/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TONIGHT. ACCUMULATING SNOW IS EXPECTED TO BEGIN THIS EVENING...AND CONTINUE OVERNIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SNOW IS LIKELY TO CONTINUE SUNDAY...HEAVY AT TIMES...THROUGH SUNDAY NIGHT WITH TOTAL SNOW ACCUMULATIONS UP NEAR A FOOT. THIS WILL LIKELY CREATE DANGEROUS TRAVEL CONDITIONS ACROSS THE REGION. BLOWING AND DRIFTING SNOW WITH WHITE OUT CONDITIONS ARE ALSO POSSIBLE SUNDAY AFTERNOON AND EVENING...ESPECIALLY IN OPEN AREAS. SOME MINOR LAKESHORE FLOODING IS POSSIBLE LATE SUNDAY INTO SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT. && LMZ740>745-012200- WINTHROP HARBOR TO WILMETTE HARBOR- WILMETTE HARBOR TO NORTHERLY ISLAND- NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY- GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY- 352 PM CST SAT JAN 31 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. GALE FORCE WINDS AND VERY HAZARDOUS WAVES WILL DEVELOP SUNDAY AND CONTINUE INTO SUNDAY NIGHT...WITH HAZARDOUS WINDS AND WAVES LIKELY LINGERING ON MONDAY. CONDITIONS HAZARDOUS TO SMALL CRAFT ARE AGAIN POSSIBLE TUESDAY THROUGH TUESDAY NIGHT AND THEN WEDNESDAY NIGHT THROUGH THURSDAY. && LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-012200- LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH FOX ISLAND 5 NM OFFSHORE- LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI- LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO MID LAKE- 352 PM CST SAT JAN 31 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. GALE FORCE WINDS ARE LIKELY ON THE SOUTHERN PORTIONS LAKE SUNDAY AFTERNOON THROUGH LATE SUNDAY EVENING. && KJB VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSCHICAGO WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
In the hours before
Local storm report, Feb 1, 2:08 AM CST, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
208 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM SNOW JOLIET 41.53N 88.12W
02/01/2015 M2.5 INCH WILL IL TRAINED SPOTTER
NEAR I-80 AND HOUBOLT RD.
&&
AKREINLocal storm report, Feb 1, 2:11 AM CST, 1 hour 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
211 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM SNOW 2 NNE MIDWAY AIRPORT 41.81N 87.74W
02/01/2015 M3.0 INCH COOK IL TRAINED SPOTTER
&&
AKREINLocal storm report, Feb 1, 2:17 AM CST, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
217 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM SNOW NNW SUGAR GROVE 41.77N 88.46W
02/01/2015 M3.0 INCH KANE IL TRAINED SPOTTER
0200 AM SNOW BATAVIA 41.85N 88.30W
02/01/2015 M2.4 INCH KANE IL TRAINED SPOTTER
&&
IZZILocal storm report, Feb 1, 2:37 AM CST, 1 hour 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
237 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0230 AM SNOW ROMEOVILLE 41.65N 88.09W
02/01/2015 M3.0 INCH WILL IL OFFICIAL NWS OBS
1.6 INCHES SINCE MIDNIGHT
&&
IZZILocal storm report, Feb 1, 3:07 AM CST, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
307 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 AM SNOW 3 NNW SUGAR GROVE 41.81N 88.48W
02/01/2015 M3.5 INCH KANE IL TRAINED SPOTTER
&&
IZZILocal storm report, Feb 1, 3:15 AM CST, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
315 AM CST SUN FEB 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 AM SNOW 2 NNE MIDWAY AIRPORT 41.81N 87.74W
02/01/2015 M3.2 INCH COOK IL TRAINED SPOTTER
STORM TOTAL SO FAR. 0.7 INCHES IN THE PAST HOUR.
&&
AKREINThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 4:11 AM CST | Lakeshore Flood Advisory | LOT | Lake | 24 hr |
| Feb 1, 4:13 AM CST | Heavy Freezing Spray Warning | LOT | 23 hr |
Nearby
Blizzard Warnings in Illinois, 2015Blizzard Warnings in Indiana, 2015Every blizzard warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.