Alert archive / Illinois / Winter Storm Warnings in 2018
Winter Storm Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this winter storm warning at Nov 14, 2018, 2:32 AM CST for 14 counties in Illinois; 5 counties in Missouri. It took effect at Nov 14, 2018, 6:00 PM CST. It was in force for 21 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
- Nov 14, 2018, 2:32 AM CST (08:32 UTC)
- In effect from
- Nov 14, 2018, 6:00 PM CST
- Expired
- Nov 15, 2018, 3:00 PM CST
- In force
- 21 hr
- Issued by
- NWS St. Louis, MO
Counties Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 08:33 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 |
|---|---|---|---|
| Nov 14, 8:50 PM CST | SNOW 0.7 | 1 Sw Vandalia, IL | |
| Nov 14, 9:51 PM CST | SNOW 0.5 | 2 Se Chalfin Bridge, IL | |
| Nov 14, 10:19 PM CST | SNOW 1 | 1 Sw Vandalia, IL | |
| Nov 14, 10:30 PM CST | SNOW 1.7 | 2 Sw Flint Hill, MO | MEASURED IN THE LAST 2 HOURS. |
| Nov 14, 10:36 PM CST | SNOW 1 | 1 E Waterloo, IL | |
| Nov 14, 11:10 PM CST | SNOW 2 | Scott Afb, IL | |
| Nov 14, 11:10 PM CST | SNOW 2 | Scott Afb, IL | CORRECTS PREVIOUS SNOW REPORT FROM SCOTT AFB. |
| Nov 14, 11:44 PM CST | SNOW 1 | Wood River, IL | |
| Nov 14, 11:50 PM CST | SNOW 2 | Aviston, IL | |
| Nov 14, 11:50 PM CST | SNOW 2.8 | 1 Ne Edwardsville, IL | REPORT VIA FACEBOOK. STILL SNOWING. |
| Nov 15, 12:07 AM CST | SNOW 3 | Scott Afb, IL | UPDATED TOTAL. STILL SNOWING. |
| Nov 15, 12:19 AM CST | SNOW 2.8 | 2 E Collinsville, IL | REPORT VIA TWITTER. SNOW CONTINUES. |
| Nov 15, 12:22 AM CST | SNOW 2.5 | 2 Sse Mascoutah, IL | SNOW CONTINUES. |
| Nov 15, 12:30 AM CST | SNOW 3.4 | 1 Ese Collinsville, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 12:37 AM CST | SNOW 2 | Freeburg, IL | LIGHT SNOW STILL FALLING. |
| Nov 15, 12:42 AM CST | SNOW 2.2 | 3 Sw Wentzville, MO | REPORT VIA FACEBOOK. STILL SNOWING. |
| Nov 15, 12:48 AM CST | SNOW 1.7 | Florissant, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 12:48 AM CST | SNOW 3.3 | 1 E Eureka, MO | REPORT VIA FACEBOOK. SNOW STILL FALLING. |
| Nov 15, 12:50 AM CST | SNOW 3.2 | Glen Carbon, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 12:54 AM CST | SNOW 0.8 | Salem, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 12:54 AM CST | SNOW 2 | 1 Ene Waterloo, IL | LIGHT SNOW STILL FALLING. |
| Nov 15, 1:00 AM CST | SNOW 1.7 | Saint Charles, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 1:04 AM CST | SNOW 3.2 | 2 Se Belleville, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 1:09 AM CST | SNOW 1.9 | Harvester, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 1:18 AM CST | SNOW 0.8 | De Soto, MO | REPORT VIA FACEBOOK. LIGHT SNOW CONTINUES. |
| Nov 15, 1:27 AM CST | SNOW 3 | Crestwood, MO | LIGHT SNOW CONTINUES. |
| Nov 15, 1:28 AM CST | SNOW 2 | Dittmer, MO | SNOW CONTINUES. |
| Nov 15, 1:30 AM CST | SNOW 1.6 | Carlyle, IL | REPORT VIA FACEBOOK. SNOW STILL FALLING. |
| Nov 15, 1:41 AM CST | SNOW 0.8 | Festus, MO | REPORT VIA FACEBOOK. LIGHT SNOW CONTINUES. |
| Nov 15, 1:42 AM CST | SNOW 2.3 | Creve Coeur, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 1:43 AM CST | SNOW 2.8 | Wentzville, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 1:51 AM CST | SNOW 2.1 | 3 Wsw Weldon Spring, MO | STORM TOTAL SO FAR AT NWS ST. LOUIS. |
| Nov 15, 2:02 AM CST | SNOW 3.3 | Oakville, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:04 AM CST | SNOW 4 | Fairview Heights, IL | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:11 AM CST | SNOW 3.8 | 1 Ne Edwardsville, IL | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:11 AM CST | SNOW 4 | Caseyville, IL | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:14 AM CST | SNOW 3 | 1 E Chesterfield, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:30 AM CST | SNOW 3.8 | 1 Nne Webster Groves, MO | SNOW CONTINUES TO FALL. |
| Nov 15, 2:40 AM CST | SNOW 4 | 1 E Wentzville, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 2:43 AM CST | SNOW 3 | 1 Sse Mascoutah, IL | LIGHT SNOW CONTINUES TO FALL. |
| Nov 15, 2:45 AM CST | SNOW 3 | 1 E Ballwin, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 3:00 AM CST | SNOW 3 | 1 E Byrnes Mill, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 3:10 AM CST | SNOW 5.2 | 3 Sw Lake Saint Louis, MO | |
| Nov 15, 3:58 AM CST | SNOW 4 | O'Fallon, IL | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 4:02 AM CST | SNOW 3.5 | Shiloh, IL | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 4:17 AM CST | SNOW 5 | Lake Saint Louis, MO | SNOW CONTINUES TO FALL. |
| Nov 15, 4:18 AM CST | SNOW 5 | Wentzville, MO | PUBLIC REPORT VIA SOCIAL MEDIA. |
| Nov 15, 4:45 AM CST | SNOW 2.8 | 1 S White City, IL | |
| Nov 15, 4:52 AM CST | SNOW 4.3 | Red Bud, IL | PUBLIC REPORT VIA SOCIAL MEDIA. |
| Nov 15, 5:00 AM CST | SNOW 3 | Wood River, IL | |
| Nov 15, 5:14 AM CST | SNOW 6 | Carrollton, IL | |
| Nov 15, 5:20 AM CST | SNOW 4.9 | 3 E Modesto, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 5:22 AM CST | SNOW 5 | 1 W Cottleville, MO | REPORT VIA FACEBOOK. SNOW CONTINUES TO FALL. |
| Nov 15, 5:30 AM CST | SNOW 2.8 | Highland, IL | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 5:45 AM CST | SNOW 4.3 | Fairview Heights, IL | |
| Nov 15, 5:48 AM CST | SNOW 3.5 | Saint Peters, MO | REPORT VIA FACEBOOK. SNOW CONTINUES. |
| Nov 15, 5:52 AM CST | SNOW 1.8 | Breese, IL | REPORT VIA FACEBOOK. |
| Nov 15, 5:57 AM CST | SNOW 3 | 1 Nw Weldon Spring, MO | |
| Nov 15, 6:13 AM CST | SNOW 4 | Waterloo, IL | |
| Nov 15, 6:22 AM CST | SNOW 3.9 | Oakville, MO | REPORT VIA TWITTER. SNOW CONTINUES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 8.5 hours before the alert went out and 198 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
- 1295 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
564 WWUS43 KLSX 140832 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 232 AM CST Wed Nov 14 2018 ...First Significant Winter Storm of the Season Expected Wednesday Night and Thursday... ILZ064-065-069-070-074-079-101-102-MOZ075-142045- /O.UPG.KLSX.WS.A.0001.181115T0000Z-181115T2100Z/ /O.NEW.KLSX.WS.W.0001.181115T0000Z-181116T0000Z/ Bond IL-Clinton IL-Fayette IL-Marion IL-Monroe IL-Randolph IL- Saint Clair IL-Sainte Genevieve MO-Washington IL- Including the cities of Belleville, Cahokia, Centralia, Chester, Salem, Sparta, and Vandalia 232 AM CST Wed Nov 14 2018 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches expected. * WHERE...Portions of southeast Missouri and south central and southwest Illinois. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ100-142045- /O.NEW.KLSX.WS.W.0001.181115T0000Z-181116T0000Z/ Madison IL- Including the cities of Alton and Edwardsville 232 AM CST Wed Nov 14 2018 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 inches expected with locally heavier amounts. * WHERE...Madison IL County. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. Call 1-800-452-4368 for road information. && $$ MOZ065-073-074-084-085-099-142045- /O.UPG.KLSX.WS.A.0001.181115T0000Z-181115T2100Z/ /O.NEW.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ Iron MO-Jefferson MO-Madison MO-Reynolds MO-Saint Francois MO- Washington MO- Including the city of Farmington 232 AM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. * WHERE...Portions of east central and southeast Missouri. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ ILZ058>060-098-099-MOZ051-052-059>064-072-142045- /O.NEW.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ Calhoun IL-Crawford MO-Franklin MO-Gasconade MO-Greene IL- Jersey IL-Lincoln MO-Macoupin IL-Montgomery IL-Montgomery MO- Saint Charles MO-Saint Louis City MO-Saint Louis MO-Warren MO- Including the cities of Litchfield, Saint Charles, Saint Louis, Sullivan, Union, and Washington 232 AM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. * WHERE...Portions of east central Missouri and south central and southwest Illinois. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ Britt
6 follow-up statements
506 WWUS43 KLSX 141642 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 1042 AM CST Wed Nov 14 2018 ...First Significant Winter Storm of the Season Expected Tonight and Thursday... ILZ058>060-098-099-MOZ061-063>065-150445- /O.UPG.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ /O.EXA.KLSX.WS.W.0001.181115T0000Z-181116T0000Z/ Calhoun IL-Greene IL-Jefferson MO-Jersey IL-Macoupin IL- Montgomery IL-Saint Charles MO-Saint Louis City MO-Saint Louis MO- Including the cities of Litchfield, Saint Charles, and Saint Louis 1042 AM CST Wed Nov 14 2018 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches expected with locally higher amounts possible. * WHERE...Portions of east central Missouri and south central and southwest Illinois. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ064-065-069-070-074-079-100>102-MOZ075-150445- /O.CON.KLSX.WS.W.0001.181115T0000Z-181116T0000Z/ Bond IL-Clinton IL-Fayette IL-Madison IL-Marion IL-Monroe IL- Randolph IL-Saint Clair IL-Sainte Genevieve MO-Washington IL- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Edwardsville, Salem, Sparta, and Vandalia 1042 AM CST Wed Nov 14 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches expected with locally higher amounts possible. * WHERE...Portions of southeast Missouri and south central and southwest Illinois. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ097-MOZ036-049-150445- /O.EXA.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ Osage MO-Pike IL-Pike MO- Including the cities of Bowling Green and Pittsfield 1042 AM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches expected. * WHERE...In Missouri, Pike MO and Osage MO Counties. In Illinois, Pike IL County. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ MOZ051-052-059-060-062-072>074-084-085-099-150445- /O.CON.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ Crawford MO-Franklin MO-Gasconade MO-Iron MO-Lincoln MO- Madison MO-Montgomery MO-Reynolds MO-Saint Francois MO-Warren MO- Washington MO- Including the cities of Farmington, Sullivan, Union, and Washington 1042 AM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. * WHERE...Portions of east central and southeast Missouri. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ Gosselin
199 WWUS43 KLSX 142110 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 310 PM CST Wed Nov 14 2018 ...First Significant Winter Storm of the Season Expected Tonight and Thursday... ILZ058>060-064-065-069-070-074-079-098>102-MOZ061-063>065-075- 150915- /O.CON.KLSX.WS.W.0001.181115T0000Z-181116T0000Z/ Bond IL-Calhoun IL-Clinton IL-Fayette IL-Greene IL-Jefferson MO- Jersey IL-Macoupin IL-Madison IL-Marion IL-Monroe IL- Montgomery IL-Randolph IL-Saint Charles MO-Saint Clair IL- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO- Washington IL- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Edwardsville, Litchfield, Saint Charles, Saint Louis, Salem, Sparta, and Vandalia 310 PM CST Wed Nov 14 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches expected with locally higher amounts possible. * WHERE...Portions of southeast Missouri and south central and southwest Illinois. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ097-MOZ036-049-051-052-059-060-062-072>074-084-085-099-150915- /O.CON.KLSX.WW.Y.0015.181115T0000Z-181116T0000Z/ Crawford MO-Franklin MO-Gasconade MO-Iron MO-Lincoln MO- Madison MO-Montgomery MO-Osage MO-Pike IL-Pike MO-Reynolds MO- Saint Francois MO-Warren MO-Washington MO- Including the cities of Bowling Green, Farmington, Pittsfield, Sullivan, Union, and Washington 310 PM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. * WHERE...Portions of east central and southeast Missouri. * WHEN...From 6 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ Gosselin
972 WWUS43 KLSX 150218 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 818 PM CST Wed Nov 14 2018 ...First Significant Winter Storm of the Season Expected Tonight and Thursday... ILZ058>060-064-065-069-070-074-079-098>102-MOZ061-063>065-075- 151200- /O.CON.KLSX.WS.W.0001.000000T0000Z-181116T0000Z/ Bond IL-Calhoun IL-Clinton IL-Fayette IL-Greene IL-Jefferson MO- Jersey IL-Macoupin IL-Madison IL-Marion IL-Monroe IL- Montgomery IL-Randolph IL-Saint Charles MO-Saint Clair IL- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO- Washington IL- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Edwardsville, Litchfield, Saint Charles, Saint Louis, Salem, Sparta, and Vandalia 818 PM CST Wed Nov 14 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 inches expected with locally higher amounts possible. * WHERE...Portions of east central and southeast Missouri and southwest Illinois. * WHEN...From 8 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ097-MOZ036-049-051-052-059-060-062-072>074-084-085-099-151200- /O.CON.KLSX.WW.Y.0015.000000T0000Z-181116T0000Z/ Crawford MO-Franklin MO-Gasconade MO-Iron MO-Lincoln MO- Madison MO-Montgomery MO-Osage MO-Pike IL-Pike MO-Reynolds MO- Saint Francois MO-Warren MO-Washington MO- Including the cities of Bowling Green, Farmington, Pittsfield, Sullivan, Union, and Washington 818 PM CST Wed Nov 14 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches expected. * WHERE...Portions of east central and southeast Missouri and west central Illinois. * WHEN...From 8 PM this evening to 6 PM CST Thursday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ GKS
922 WWUS43 KLSX 150940 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 340 AM CST Thu Nov 15 2018 ...First Significant Winter Storm Impacting The Area... ILZ058>060-064-065-069-070-074-079-098>102-MOZ061-063>065-075- 152145- /O.CON.KLSX.WS.W.0001.000000T0000Z-181116T0000Z/ Bond IL-Calhoun IL-Clinton IL-Fayette IL-Greene IL-Jefferson MO- Jersey IL-Macoupin IL-Madison IL-Marion IL-Monroe IL- Montgomery IL-Randolph IL-Saint Charles MO-Saint Clair IL- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO- Washington IL- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Edwardsville, Litchfield, Saint Charles, Saint Louis, Salem, Sparta, and Vandalia 340 AM CST Thu Nov 15 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Heavy snow expected. An additional 1 to 4 inches of snow is expected. * WHERE...Portions of east central and southeast Missouri and southwest Illinois. * WHEN...Through 6 PM CST this evening. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ097-MOZ036-049-051-052-059-060-062-072>074-084-085-099-152145- /O.CON.KLSX.WW.Y.0015.000000T0000Z-181116T0000Z/ Crawford MO-Franklin MO-Gasconade MO-Iron MO-Lincoln MO- Madison MO-Montgomery MO-Osage MO-Pike IL-Pike MO-Reynolds MO- Saint Francois MO-Warren MO-Washington MO- Including the cities of Bowling Green, Farmington, Pittsfield, Sullivan, Union, and Washington 340 AM CST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Snow expected. An additional 1 to 4 inches of snow is expected. * WHERE...Portions of east central and southeast Missouri and west central Illinois. * WHEN...Through 6 PM CST this evening. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ Britt
980 WWUS43 KLSX 151816 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 1216 PM CST Thu Nov 15 2018 ...First Significant Winter Storm Impacting The Area... ILZ059-060-064-065-069-070-074-100-151930- /O.CAN.KLSX.WS.W.0001.000000T0000Z-181116T0000Z/ Bond IL-Clinton IL-Fayette IL-Macoupin IL-Madison IL-Marion IL- Montgomery IL-Washington IL- Including the cities of Alton, Centralia, Edwardsville, Litchfield, Salem, and Vandalia 1216 PM CST Thu Nov 15 2018 ...WINTER STORM WARNING IS CANCELLED... Accumulating snowfall has ended across the warned area. $$ MOZ049-051-059-072-099-151930- /O.CAN.KLSX.WW.Y.0015.000000T0000Z-181116T0000Z/ Crawford MO-Gasconade MO-Montgomery MO-Osage MO-Reynolds MO- 1216 PM CST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Accumulating snowfall has ended across the advisory area. $$ ILZ058-079-098-099-101-102-MOZ061-063>065-075-152100- /O.EXT.KLSX.WS.W.0001.000000T0000Z-181115T2100Z/ Calhoun IL-Greene IL-Jefferson MO-Jersey IL-Monroe IL-Randolph IL- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Sainte Genevieve MO- Including the cities of Belleville, Cahokia, Chester, Saint Charles, Saint Louis, and Sparta 1216 PM CST Thu Nov 15 2018 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... * WHAT...Heavy snow expected. Additional snowfall amounts up to a half inch are likely. * WHERE...Portions of east central and southeast Missouri and southwest Illinois. * WHEN...Until 3 PM CST this afternoon. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning and evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means that heavy snowfall of 6 inches or more is expected. The rapid accumulation of snow will make travel extremely difficult, if not impossible. If travel is necessary, make sure to exercise extreme caution. Begin your travel with a full tank of gas, and carry a winter storm kit which includes a shovel, flashlight, cellphone, food and water, and blankets of extra warm clothing. In Illinois, call 1-800-452-4368 for road information. In Missouri, call 1-888-275-6636 for road information. && $$ ILZ097-MOZ036-052-060-062-073-074-084-085-152100- /O.EXT.KLSX.WW.Y.0015.000000T0000Z-181115T2100Z/ Franklin MO-Iron MO-Lincoln MO-Madison MO-Pike IL-Pike MO- Saint Francois MO-Warren MO-Washington MO- Including the cities of Bowling Green, Farmington, Pittsfield, Sullivan, Union, and Washington 1216 PM CST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... * WHAT...Snow expected. Additional snowfall amounts up to a half inch are likely. * WHERE...Portions of east central and southeast Missouri and west central Illinois. * WHEN...Until 3 PM CST this afternoon. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means that periods of accumulating snow will primarily cause travel difficulties. Roads may rapidly become slippery once the snow begins, so motorists should plan for a slower than normal trip. Be especially alert when approaching bridges, overpasses, and curves. Call 1-888-275-6636 for road information. && $$ Gosselin
801 WWUS43 KLSX 152059 WSWLSX URGENT - WINTER WEATHER MESSAGE National Weather Service Saint Louis MO 259 PM CST Thu Nov 15 2018 ILZ058-079-098-099-101-102-MOZ061-063>065-075-152200- /O.EXP.KLSX.WS.W.0001.000000T0000Z-181115T2100Z/ Calhoun IL-Greene IL-Jefferson MO-Jersey IL-Monroe IL-Randolph IL- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Sainte Genevieve MO- Including the cities of Belleville, Cahokia, Chester, Saint Charles, Saint Louis, and Sparta 259 PM CST Thu Nov 15 2018 ...WINTER STORM WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON... Accumulating snowfall has ended across the warning area. Therefore, the warning will be allowed to expire. $$ ILZ097-MOZ036-052-060-062-073-074-084-085-152200- /O.EXP.KLSX.WW.Y.0015.000000T0000Z-181115T2100Z/ Franklin MO-Iron MO-Lincoln MO-Madison MO-Pike IL-Pike MO- Saint Francois MO-Warren MO-Washington MO- Including the cities of Bowling Green, Farmington, Pittsfield, Sullivan, Union, and Washington 259 PM CST Thu Nov 15 2018 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS AFTERNOON... Accumulating snowfall has ended across the advisory area. Therefore, the advisory will be allowed to expire. $$ Gosselin
What forecasters said that day
The local office's own words before this winter storm warning 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 winter storm warning went out at Nov 13, 11:47 PM CST, 2 hours 45 minutes earlier.
Area forecast discussion, Nov 13, 11:47 PM CST, 2 hours 45 minutes before
Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
1147 PM CST Tue Nov 13 2018
.SHORT TERM... (Through Late Wednesday Afternoon)
Issued at 222 PM CST Tue Nov 13 2018
Surface ridge will continue to build into the region tonight. So
will have light and variable winds and clear skies. This combined
with snow cover over portions of central, east central and northeast
Missouri, as well as west central Illinois, will allow temperatures
to drop off into the teens for overnight lows.
On Wednesday, surface ridge begins to move off to the east while a
developing weather system over northeastern Texas begins to move
northeastward towards the Missouri bootheel. Will see increasing mid
and high clouds Wednesday afternoon. Moisture will be slow to return
to the region, but may see a bit of light snow over portions of
southeast Missouri and southern Illinois late in the afternoon.
Highs on Wednesday will be in the mid to upper 30s.
Byrd
.LONG TERM... (Wednesday Night through Next Tuesday)
Issued at 222 PM CST Tue Nov 13 2018
(Wednesday Night - Thursday)
...Confidence Increasing in Significant Snowfall Across Parts of
the Area...
Deterministic guidance has continued to cluster together with how
the closed low across the Arklatex region will evolve over the next
48 hours. Some small differences still exist with respect to timing
and track, but the general consensus is for the closed low to slowly
lift northeast Wednesday night through the day Thursday. There is
nothing really steering this system at mid/upper levels, so it
appears that internal dynamics within the closed low itself will be
very important. Higher resolution guidance even shows this
explicitly as an individual vorticity maximum rotates cyclonically
from the southern portion of the parent circulation very quickly
into the northeastern quadrant. This appears to help the system jog
a bit more to the north from 0000 UTC to 1200 UTC Thursday.
Isentropic surfaces show a classic maturing midlatitude cyclone. The
moisture within the warm conveyor belt origins is actually more off
of the southwestern Atlantic Ocean compared to the Gulf of Mexico.
The cyclonic portion of the warm conveyor belt (TROWAL) is very well
defined, moving into southern portions of the CWA late Wednesday
night. The TROWAL is then expected to move north, even a bit to the
north/northwest, pivot, and then move off to the east/northeast.
This evolution may end up being similar to the heavy snow event of
March 4th, 2008. Wherever this pivot point occurs is where the
heaviest snowfall will likely occur. 320K isentropic surface also
shows a portion of the dry conveyor belt which wraps cyclonically
and ascends above the warm conveyor belt. This process is a common
feature of mature midlatitude cyclones and helps to increase
potential instability within the deformation zone.
Model soundings continue to show efficient snowfall processes within
the axis of heaviest snowfall. Maximum lift is centered within the
dendritic growth zone which is nearly supersaturated with respect to
ice. This is referred to as the crosshair signature which previous
research has shown to be a common feature for heavy snowfall (6+")
events. The dendrites should then aggregate as they head to the
surface as they fall in an atmosphere that is isothermal around -5C
up to near 700 hPa. Light winds throughout the column should
also prevent fracturing of these large aggregated dendrites.
Subfreezing surface temperatures and colder ground temperatures
compared to the past few snow events should also increase snowfall
efficiency.
Mean 850-hPa low track is from KMEM to near the Ohio/Mississippi
River confluence into southwestern Indiana. Browne and Younkin
(1970) technique would favor the heaviest snow axis very close to a
KFAM>>KSAR>>KSLO axis and still have the highest snowfall totals
near this axis. Due to increasing confidence in the track of the
system, did raise snowfall totals across much of southeastern
Missouri and southwest Illinois into the 3-6 inch range. These
totals still may not be high enough if the wetter ECMWF/NAM
solutions come close to verifying. Because of the potential for at
least isolated totals of 6+" of snow, the timing of the heaviest
snow near rush hour on Thursday, and concerns for tree damage and
associated power outages due to leaves remaining on many trees, went
ahead and issued a winter storm watch for parts of the area. The
watch is roughly to the southeast of the I-44 corridor in Missouri
and Interstate 70 in Illinois. An upgrade to a warning in addition
to a possible advisory further to the northwest is certainly
possible over the next 24 hours as confidence further increases.
Further to the northwest, lesser amounts of snow are possible
ranging from 1 to 4". This is where the main region of uncertainty
exists with respect to snowfall amounts: along and just to the
northwest of the existing winter storm watch, which includes the St.
Louis metropolitan area. A slight shift of the storm 20-30 miles to
the northwest could yield several more inches of snow whereas a
slight shift southeastward could yield little to no snow
accumulation. Fine tuning the exact path of this storm and its
associated deformation zone will likely be the primary challenge
with this event moving forward.
(Thursday Night - Next Tuesday)
Much quieter weather is in store after the winter storm moves off
into the Ohio Valley. Zonal to northwest flow aloft is likely for
the remainder of the forecast period. A cold front is expected to
move through Friday night into Saturday. A chance of rain/snow is
possible Saturday night into Sunday as a shortwave trough moves
through the mid-Missouri Valley into the Ohio Valley.
Temperatures will remain below normal for the duration of the
extended forecast. The warmest day is forecast to be on Friday ahead
of the cold front as highs reach into the 40s and 50s. Cooler
conditions are then likely for the weekend into early next week as
highs only reach the 30s and 40s.
Gosselin
&&
.AVIATION... (For the 06z TAFs through 06z Wednesday Night)
Issued at 1127 PM CST Tue Nov 13 2018
VFR flight conditions and light north-northeast wind is expected
to prevail through the daytime hours on Wednesday. A strong storm
system will move up the Mississippi Valley on Wednesday night.
This system will spread clouds and light snow back into southeast
Missouri and southern Illinois late in the period after 03Z.
Ceilings and visibility will likely drop to low MVFR/IFR in these
areas before 06Z Thursday.
SPECIFICS FOR KSTL:
VFR flight conditions and light north-northeast flow is expected
to prevail at Lambert Field through around 06Z Thursday. The next
storm system probably won't spread snow far enough north to impact
the terminal until at least 05-06Z. Some guidance even holds off
until later. I went with the later guidance as this is the current
consensus of the model data. Once the snow starts, expect flight
conditions to deteriorate rapidly to low MVFR/IFR and stay down
into Thursday morning.
Carney
&&
.PRELIMINARY POINT TEMPS/POPS...
Saint Louis 20 36 27 37 / 0 10 80 80
Quincy 18 37 21 41 / 0 0 5 5
Columbia 15 36 21 42 / 0 0 10 10
Jefferson City 14 37 23 43 / 0 5 20 10
Salem 21 37 28 34 / 0 10 80 90
Farmington 19 35 25 36 / 0 20 90 80
&&
.LSX WATCHES/WARNINGS/ADVISORIES...
MO...Winter Storm Watch from Wednesday evening through Thursday
afternoon for Iron MO-Jefferson MO-Madison MO-Reynolds MO-
Saint Francois MO-Sainte Genevieve MO-Washington MO.
IL...Winter Storm Watch from Wednesday evening through Thursday
afternoon for Bond IL-Clinton IL-Fayette IL-Marion IL-
Monroe IL-Randolph IL-Saint Clair IL-Washington IL.
&&
WFO LSXHazardous weather outlook, Nov 13, 3:44 AM CST, 22 hours 48 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 344 AM CST Tue Nov 13 2018 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-140945- Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO- Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO- Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO- Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL- Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO- Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO- 344 AM CST Tue Nov 13 2018 This Hazardous Weather Outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Accumulating snow and is likely over east central and southeastern Missouri as well as southwestern Illinois on Wednesday night and Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. Britt
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 14, 2:32 AM CST | Winter Weather Advisory | LSX | Calhoun, Greene, Jersey, Macoupin, Montgomery, Pike | 36 hr |
Nearby
Winter Storm Warnings in Illinois, 2018Winter Storm Warnings in Missouri, 2018Every winter storm warning in 2018
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.