Alert archive / Missouri / Frost Advisories in 2016
Frost Advisory 2, NWS St. Louis, MO
NWS St. Louis, MO issued this frost advisory at Oct 20, 2016, 2:59 PM CDT for Adams County, Brown County, Pike County, Illinois; 6 counties in Missouri. It took effect at Oct 21, 2016, 4:00 AM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 20, 2016, 2:59 PM CDT (19:59 UTC)
- In effect from
- Oct 21, 2016, 4:00 AM CDT
- Expired
- Oct 21, 2016, 8:00 AM CDT
- In force
- 4 hr
- 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, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 146 km from the middle of the area, began a volume at 20:01 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, 8.0 hours before the alert went out and 218 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
- 1439 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
120 WWUS73 KLSX 201959 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAINT LOUIS MO ISSUED BY NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 259 PM CDT THU OCT 20 2016 ILZ095>097-MOZ018-019-026-027-034-035-211100- /O.NEW.KLSX.FR.Y.0002.161021T0900Z-161021T1300Z/ ADAMS IL-BROWN IL-KNOX MO-LEWIS MO-MARION MO-MONROE MO-PIKE IL- RALLS MO-SHELBY MO- INCLUDING THE CITIES OF...HANNIBAL...MOUNT STERLING... PITTSFIELD...QUINCY 259 PM CDT THU OCT 20 2016 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM CDT FRIDAY... THE NATIONAL WEATHER SERVICE IN SAINT LOUIS HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 8 AM CDT FRIDAY. * TIMING...EARLY FRIDAY MORNING. * TEMPERATURES...IN THE MIDDLE TO UPPER 30S. * IMPACTS...SENSITIVE PLANTS AND TREES MAY BE DAMAGED OR KILLED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT WIDESPREAD FROST IS EXPECTED. THOSE WITH AGRICULTURAL INTERESTS IN THE ADVISORY AREA SHOULD PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ WFO LSX
1 follow-up statement
179 WWUS73 KLSX 211247 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAINT LOUIS MO 747 AM CDT FRI OCT 21 2016 ILZ095>097-MOZ018-019-026-027-034-035-211400- /O.EXP.KLSX.FR.Y.0002.000000T0000Z-161021T1300Z/ ADAMS IL-BROWN IL-KNOX MO-LEWIS MO-MARION MO-MONROE MO-PIKE IL- RALLS MO-SHELBY MO- INCLUDING THE CITIES OF...HANNIBAL...MOUNT STERLING... PITTSFIELD...QUINCY 747 AM CDT FRI OCT 21 2016 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... TEMPERATURES ARE WARMING UP, SO THE FROST ADVISORY WILL BE ALLOWED TO EXPIRE AT 8 AM. $$ BYRD
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 19, 7:49 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 41 min |
| Oct 19, 11:20 PM CDT | Areal Flood Advisory | LSX | Monroe, Saint Clair | 4 hr |
| Oct 19, 11:39 PM CDT | Flash Flood Warning | LSX | Monroe | 8 hr |
| Oct 20, 12:22 AM CDT | Special Weather Statement | LSX | Macoupin | 38 min |
| Oct 20, 12:26 AM CDT | Special Weather Statement | LSX | Macoupin | 49 min |
| Oct 20, 4:08 AM CDT | Special Weather Statement | LSX | Madison | 52 min |
| Oct 19, 7:37 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Sainte Genevieve, Saint Francois | 23 min |
Nearby
Frost Advisories in Missouri, 2016Frost Advisories in Illinois, 2016Every frost advisory in 2016
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.