Alert archive / Missouri / Winter Weather Advisories in 2015
Winter Weather Advisory 4, NWS St. Louis, MO
NWS St. Louis, MO issued this winter weather advisory at Feb 14, 2015, 3:36 PM CST for 7 counties in Missouri; Randolph County, Illinois. It took effect at Feb 15, 2015, 12:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 14, 2015, 3:36 PM CST (21:36 UTC)
- In effect from
- Feb 15, 2015, 12:00 PM CST
- Expired
- Feb 15, 2015, 2:50 AM CST
- In force
- Issued by
- NWS St. Louis, MO
Counties Randolph County, IL, Crawford County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 21:42 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, 9.6 hours before the alert went out and 317 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
- 1346 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Winter Weather Advisories in Missouri, 2015Winter Weather Advisories in Illinois, 2015Every winter weather advisory 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.