Alert archive / Missouri / Flash Flood Watches in 2015

Flash Flood Watch 16, NWS Kansas City, MO

September 7, 20159 counties in Missouri

NWS Kansas City, MO issued this flash flood watch at Sep 7, 2015, 3:52 AM CDT for 9 counties in Missouri. It took effect at Sep 7, 2015, 7:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Sep 7, 2015, 3:52 AM CDT (08:52 UTC)
In effect from
Sep 7, 2015, 7:00 PM CDT
Expired
Sep 8, 2015, 4:42 AM CDT
In force
10 hr
Issued by
NWS Kansas City, MO
Flood severity
None

Counties Atchison County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 156 km from the middle of the area, began a volume at 08:55 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

Omaha, NE (KOAX), launched 00:00Z, 8.9 hours before the alert went out and 214 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, Omaha, NE at 00:00Z on 2015-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1563 joules per kilogram.LCLLFCEL10008507005003002001001 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, Omaha, NE at 00:00Z on 2015-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.19395878Sfc1 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
1563 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1693 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.5
Supercell composite
21.9

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 Kansas City, MO wrote its last area forecast discussion before this flash flood watch went out at Sep 7, 12:44 AM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Sep 7, 12:44 AM CDT, 3 hours 8 minutes before
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Hazardous weather outlook, Sep 6, 5:40 AM CDT, 22 hours 12 minutes before
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The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 6, 8:45 PM CDTSpecial Weather StatementEAXAtchison45 min
Sep 7, 4:47 AM CDTAreal Flood AdvisoryEAXAdair, Daviess, DeKalb, Gentry, Grundy, Harrison and 5 more4 hr
Sep 7, 10:40 AM CDTRiver Flood WarningEAXAndrew, Nodaway3 days
Sep 7, 10:40 AM CDTRiver Flood WarningEAXAndrew, Buchanan4 days
Sep 7, 10:40 AM CDTRiver Flood WarningEAXLinn, Livingston6 days
Sep 7, 10:40 AM CDTRiver Flood WarningEAXBuchanan8 days

Nearby

Flash Flood Watches in Missouri, 2015Every flash flood watch 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.