Alert archive / Missouri / Flash Flood Warnings in 1991

Flash Flood Warning 21, NWS St. Louis, MO

July 11, 1991Monroe County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 11, 1991, 7:07 AM CDT for Monroe County, Missouri. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 11, 1991, 7:07 AM CDT (12:07 UTC)
Expired
Jul 11, 1991, 10:15 AM CDT
In force
3 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Monroe County, MO

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 0.1 hours before the alert went out and 318 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, Topeka, KS at 12:00Z on 1991-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 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, Topeka, KS at 12:00Z on 1991-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.193958Sfc1 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
590 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 4:00 AM CDTFlash Flood WarningLSXMonroe, Shelby3 hr
Jul 11, 4:00 AM CDTFlash Flood WarningLSXPike3 hr
Jul 11, 5:35 AM CDTFlash Flood WarningLSXLincoln3 hr
Jul 11, 7:07 AM CDTFlash Flood WarningLSXPike3 hr
Jul 11, 5:42 PM CDTSevere Thunderstorm WarningLSXKnox48 min
Jul 11, 5:52 PM CDTSevere Thunderstorm WarningLSXSchuyler, Scotland36 min
Jul 11, 6:32 PM CDTSevere Thunderstorm WarningLSXKnox43 min

Nearby

Flash Flood Warnings in Missouri, 1991Every flash flood warning in 1991

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.