Alert archive / Missouri / Winter Storm Watches in 2019
Winter Storm Watch 2, NWS St. Louis, MO
NWS St. Louis, MO issued this winter storm watch at Jan 17, 2019, 2:35 PM CST for 7 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It took effect at Jan 18, 2019, 3:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 17, 2019, 2:35 PM CST (20:35 UTC)
- In effect from
- Jan 18, 2019, 3:00 PM CST
- Expired
- Jan 18, 2019, 2:45 AM CST
- In force
- Issued by
- NWS St. Louis, MO
Counties Adams County, IL, Brown County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 20:38 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 12:00Z, 8.6 hours before the alert went out and 222 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
- 458 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Jan 17, 2:34 PM CST, 1 minute earlier.
Area forecast discussion, Jan 17, 2:34 PM CST, 1 minute before
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</html>The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 4:10 AM CST | Dense Fog Advisory | LSX | Audrain, Boone, Callaway, Cole, Crawford, Franklin and 20 more | 8 hr |
Nearby
Winter Storm Watches in Missouri, 2019Winter Storm Watches in Illinois, 2019Every winter storm watch in 2019
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.