Alert archive / Michigan / Flash Flood Warnings in 1991

Flash Flood Warning 2, NWS Detroit, MI

April 9, 1991Gladwin County, Michigan

NWS Detroit, MI issued this flash flood warning at Apr 9, 1991, 5:55 PM EDT for Gladwin County, Michigan. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 9, 1991, 5:55 PM EDT (21:55 UTC)
Expired
Apr 9, 1991, 9:21 PM EDT
In force
3 hr
Issued by
NWS Detroit, MI
Area
Whole counties

County Gladwin County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 9.9 hours before the alert went out and 161 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, Detroit, MI at 12:00Z on 1991-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Detroit, MI at 12:00Z on 1991-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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 Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 1:30 PM EDTFlash Flood WarningDTXGladwin4 hr
Apr 9, 4:40 PM EDTSevere Thunderstorm WarningDTXLenawee, Washtenaw65 min
Apr 9, 4:45 PM EDTSevere Thunderstorm WarningDTXMonroe45 min
Apr 9, 5:05 PM EDTSevere Thunderstorm WarningDTXLivingston55 min
Apr 9, 5:15 PM EDTSevere Thunderstorm WarningDTXOakland, Wayne60 min
Apr 9, 5:45 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair2 hr
Apr 9, 5:45 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair60 min

Nearby

Flash Flood Warnings in Michigan, 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.