Alert archive / Michigan / Flash Flood Warnings in 1999

Flash Flood Warning 4, NWS Detroit, MI

June 12, 1999Oakland County, Wayne County, Michigan

NWS Detroit, MI issued this flash flood warning at Jun 12, 1999, 5:29 PM EDT for Oakland County, Wayne County, Michigan. It was in force for 3 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
Jun 12, 1999, 5:29 PM EDT (21:29 UTC)
Expired
Jun 12, 1999, 8:00 PM EDT
In force
3 hr
Issued by
NWS Detroit, MI
Area
Whole counties

Counties Oakland County, MI, Wayne County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 9.5 hours before the alert went out and 29 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 1999-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 328 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, Detroit, MI at 12:00Z on 1999-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
328 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1376 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jun 12, 1:30 PM EDTSevere Thunderstorm WarningDTXWayne60 min
Jun 12, 3:23 PM EDTSevere Thunderstorm WarningDTXMacomb37 min
Jun 12, 3:58 PM EDTSevere Thunderstorm WarningDTXMacomb, Saint Clair62 min
Jun 12, 4:59 PM EDTSevere Thunderstorm WarningDTXSaint Clair, Sanilac61 min
Jun 12, 5:08 PM EDTSevere Thunderstorm WarningDTXWayne52 min
Jun 12, 5:35 PM EDTSevere Thunderstorm WarningDTXLenawee, Monroe55 min
Jun 12, 7:57 PM EDTFlash Flood WarningDTXOakland, Wayne2 hr

Nearby

Flash Flood Warnings in Michigan, 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.