Alert archive / Missouri / Winter Storm Watches in 2015
Winter Storm Watch 1, NWS St. Louis, MO
NWS St. Louis, MO issued this winter storm watch at Jan 30, 2015, 2:23 PM CST for 4 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It took effect at Jan 31, 2015, 6:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 30, 2015, 2:23 PM CST (20:23 UTC)
- In effect from
- Jan 31, 2015, 6:00 PM CST
- Expired
- Jan 31, 2015, 3:55 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, Shelby County, MO
The radar
The St Louis radar (KLSX), 152 km from the middle of the area, began a volume at 20:24 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 247 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
- 898 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 38 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 30, 11:21 AM CST, 3 hours 2 minutes earlier.
Area forecast discussion, Jan 30, 11:21 AM CST, 3 hours 2 minutes before
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</html>Hazardous weather outlook, Jan 30, 5:42 AM CST, 8 hours 41 minutes before
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</html>Nearby
Winter Storm Watches in Missouri, 2015Winter Storm Watches in Illinois, 2015Every winter storm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.