Alert archive / Missouri / Winter Weather Advisories in 2015
Winter Weather Advisory 2, NWS St. Louis, MO
NWS St. Louis, MO issued this winter weather advisory at Jan 31, 2015, 3:55 AM CST for 5 counties in Missouri; Pike County, Illinois. It took effect at Jan 31, 2015, 9:00 PM CST. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Jan 31, 2015, 3:55 AM CST (09:55 UTC)
- In effect from
- Jan 31, 2015, 9:00 PM CST
- Expired
- Feb 1, 2015, 9:00 PM CST
- In force
- 24 hr
- Issued by
- NWS St. Louis, MO
Counties Pike County, IL, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 125 km from the middle of the area, began a volume at 09:52 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 00:00Z, 9.9 hours before the alert went out and 241 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
- 1201 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 266 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 weather advisory 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 weather advisory went out at Jan 30, 5:21 PM CST, 10 hours 34 minutes earlier.
Area forecast discussion, Jan 30, 5:21 PM CST, 10 hours 34 minutes before
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<div class="status" id="status">Temporary Notice</div>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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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 31, 3:55 AM CST | Winter Storm Warning | LSX | Knox, Lewis, Marion, Shelby | 41 hr |
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.