Alert archive / Illinois / Areal Flood Warnings in 2019

Areal Flood Warning 49, NWS St. Louis, MO

November 30, 2019Bond County, Fayette County, Illinois

NWS St. Louis, MO issued this areal flood warning at Nov 30, 2019, 6:00 PM CST for Bond County, Fayette County, Illinois. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 30, 2019, 6:00 PM CST (00:00 UTC)
Expired
Dec 1, 2019, 12:00 AM CST
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Bond County, IL, Fayette County, IL

The radar

The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 00:04 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 00:00Z, 0.0 hours before the alert went out and 145 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2019-12-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2019-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
436 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at Nov 30, 3:06 PM CST, 2 hours 54 minutes earlier.

Area forecast discussion, Nov 30, 3:06 PM CST, 2 hours 54 minutes before
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Hazardous weather outlook, Nov 30, 3:22 PM CST, 2 hours 38 minutes before
Hazardous Weather Outlook
National Weather Service Saint Louis MO
322 PM CST Sat Nov 30 2019

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-011200-
Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO-
Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO-
Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO-
Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO-
Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL-
Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO-
Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO-
Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO-
322 PM CST Sat Nov 30 2019

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight.

Wind gusts of 35 to 45 mph are expected late tonight across central,
east central and southeast Missouri as well as southwest Illinois.

Snow showers are likely late tonight across mainly central and
northeast Missouri and into west central Illinois. Little if any
accumulation is currently expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Snow showers are likely across much of the area during the day
Sunday. Little if any accumulation is currently expected.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report wintry precipitation type and
amounts to the National Weather Service.

Tilly

In the hours before

Local storm report, Nov 30, 1:42 PM CST, 4 hours 18 minutes before
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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 30, 11:47 PM CSTRiver Flood WarningLSXCole11 hr
Dec 1, 9:41 AM CSTRiver Flood WarningLSXGasconade, Montgomery24 hr
Dec 1, 11:30 AM CSTRiver Flood WarningLSXPerry, Sainte Genevieve23 hr

Nearby

Areal Flood Warnings in Illinois, 2019Every areal flood warning 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.