Alert archive / Illinois / Areal Flood Warnings in 2015

Areal Flood Warning 59, NWS St. Louis, MO

December 28, 20156 counties in Illinois

NWS St. Louis, MO issued this areal flood warning at Dec 28, 2015, 1:14 PM CST for 6 counties in Illinois. It was in force for 24 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: Dec 28, 2015, 1:14 PM CST (19:14 UTC)
Expired: Dec 29, 2015, 1:15 PM CST
In force: 24 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Clinton County, IL, Marion County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL

The radar

The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 19:15 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, 7.2 hours before the alert went out and 213 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 654 m²/s²
0-3 km storm-relative helicity: 1003 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Dec 28, 12:05 PM CST, 1 hour 9 minutes earlier.

Area forecast discussion, Dec 28, 12:05 PM CST, 1 hour 9 minutes before

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Hazardous weather outlook, Dec 28, 7:51 AM CST, 5 hours 23 minutes before

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In the hours before

Local storm report, Dec 28, 9:49 AM CST, 3 hours 25 minutes before

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Local storm report, Dec 28, 9:56 AM CST, 3 hours 18 minutes before

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Local storm report, Dec 28, 10:17 AM CST, 2 hours 57 minutes before

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Local storm report, Dec 28, 10:28 AM CST, 2 hours 46 minutes before

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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Dec 28, 11:29 AM CST, 1 hour 45 minutes before

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      <p id="message2">
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Dec 28, 1:04 PM CST, 10 minutes before

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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 28, 2:08 AM CST	Flash Flood Warning	LSX	Reynolds	3 hr
Dec 28, 4:28 AM CST	Flash Flood Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	8 hr
Dec 28, 5:21 AM CST	Flash Flood Warning	LSX	Callaway, Cole, Crawford, Franklin, Gasconade, Lincoln and 3 more	7 hr
Dec 28, 5:24 AM CST	Flash Flood Warning	LSX	Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more	7 hr
Dec 28, 7:57 AM CST	Flash Flood Warning	LSX	Audrain, Lincoln, Montgomery, Pike	6 hr
Dec 28, 12:23 PM CST	Areal Flood Warning	LSX	Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more	24 hr
Dec 28, 12:37 PM CST	Areal Flood Warning	LSX	Cole, Franklin, Gasconade, Jefferson, Lincoln, Montgomery and 5 more	24 hr
Dec 28, 7:57 AM CST	Flash Flood Warning	LSX	Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more	6 hr
Dec 28, 1:16 PM CST	Areal Flood Warning	LSX	Bond, Calhoun, Fayette, Greene, Jersey, Macoupin and 2 more	24 hr

Nearby

Areal Flood Warnings in Illinois, 2015 Every areal flood warning 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.