Alert archive / Missouri / Flash Flood Watches in 2010

Flash Flood Watch 10, NWS St. Louis, MO

June 13, 201011 counties in Missouri; Adams County, Illinois

NWS St. Louis, MO issued this flash flood watch at Jun 13, 2010, 4:34 AM CDT for 11 counties in Missouri; Adams County, Illinois. It took effect at Jun 13, 2010, 7:00 AM CDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Jun 13, 2010, 4:34 AM CDT (09:34 UTC)
In effect from: Jun 13, 2010, 7:00 AM CDT
Expired: Jun 14, 2010, 12:42 PM CDT
In force: 30 hr
Issued by: NWS St. Louis, MO
Flood severity: None

Counties Adams County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 09:35 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, 9.6 hours before the alert went out and 296 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: 136 J/kg
Mixed-layer CIN: -233 J/kg
Mixed-layer LCL: 1243 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 280 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 flash flood watch 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 flash flood watch went out at Jun 13, 3:53 AM CDT, 41 minutes earlier.

Area forecast discussion, Jun 13, 3:53 AM CDT, 41 minutes before

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Hazardous weather outlook, Jun 12, 10:39 PM CDT, 5 hours 55 minutes before

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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
Jun 13, 8:04 AM CDT	River Flood Warning	LSX	Lewis	3 days
Jun 13, 8:29 AM CDT	River Flood Warning	LSX	Lewis	4 days
Jun 13, 8:55 AM CDT	Areal Flood Advisory	LSX	Knox	3 hr
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Lewis	4 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Marion	4 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Marion	77 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Ralls	75 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Pike	77 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Pike	78 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Lincoln	77 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Saint Charles	76 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Saint Charles	56 days
Jun 13, 11:38 AM CDT	River Flood Warning	LSX	Saint Louis, City of Saint Louis	34 days
Jun 13, 11:47 AM CDT	Severe Thunderstorm Warning	LSX	Marion, Monroe, Shelby	43 min
Jun 13, 2:35 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe	55 min
Jun 13, 2:37 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion	38 min
Jun 13, 3:17 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Monroe, Ralls	43 min
Jun 13, 3:29 PM CDT	Tornado Warning	LSX	Marion, Ralls	35 min
Jun 13, 4:44 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery	46 min
Jun 13, 5:09 PM CDT	Areal Flood Advisory	LSX	Saint Louis, City of Saint Louis	6 hr
Jun 13, 6:11 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	37 min
Jun 13, 12:46 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown	44 min
Jun 13, 1:30 PM CDT	Severe Thunderstorm Warning	LSX	Brown	15 min
Jun 13, 1:32 PM CDT	Severe Thunderstorm Warning	LSX	Pike	28 min
Jun 13, 3:57 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	48 min
Jun 13, 4:13 PM CDT	Areal Flood Advisory	LSX	Pike	6 hr

Nearby

Flash Flood Watches in Missouri, 2010 Flash Flood Watches in Illinois, 2010 Every flash flood watch in 2010

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.