Alert archive / Missouri / Flash Flood Warnings in 1999

Flash Flood Warning 11, NWS Kansas City, MO

August 7, 1999Cooper County, Pettis County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 7, 1999, 11:10 PM CDT for Cooper County, Pettis County, Missouri. It was in force for 2 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
Aug 7, 1999, 11:10 PM CDT (04:10 UTC)
Expired
Aug 8, 1999, 1:15 AM CDT
In force
2 hr
Issued by
NWS Kansas City, MO
Area
Whole counties

Counties Cooper County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 105 km from the middle of the area, began a volume at 04:13 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

Springfield, MO (KSGF), launched 00:00Z, 4.2 hours before the alert went out and 220 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, Springfield, MO at 00:00Z on 1999-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 719 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, Springfield, MO at 00:00Z on 1999-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939Sfc1 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
719 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
2377 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 9:05 PM CDTSevere Thunderstorm WarningEAXCass40 min
Aug 7, 9:36 PM CDTSevere Thunderstorm WarningEAXJohnson39 min
Aug 7, 10:09 PM CDTSevere Thunderstorm WarningEAXLafayette, Pettis, Saline51 min
Aug 7, 10:39 PM CDTSevere Thunderstorm WarningEAXCooper51 min
Aug 7, 7:48 PM CDTSevere Thunderstorm WarningEAXMiami42 min

Nearby

Flash Flood Warnings in Missouri, 1999Every flash flood warning in 1999

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.