Alert archive / Maine / Flash Flood Warnings in 1999

Flash Flood Warning 1, NWS Caribou, ME

August 12, 1999Aroostook County, Maine

NWS Caribou, ME issued this flash flood warning at Aug 12, 1999, 5:40 PM EDT for Aroostook County, Maine. 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 12, 1999, 5:40 PM EDT (21:40 UTC)
Expired
Aug 12, 1999, 7:45 PM EDT
In force
2 hr
Issued by
NWS Caribou, ME
Area
Whole counties

County Aroostook County, ME

The nearest sounding before it

Caribou, ME (KCAR), launched 12:00Z, 9.7 hours before the alert went out and 51 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, Caribou, ME at 12:00Z on 1999-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, Caribou, ME at 12:00Z on 1999-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
31 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
150 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 Caribou, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 2:59 PM EDTSevere Thunderstorm WarningCARAroostook31 min
Aug 12, 3:56 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot49 min
Aug 12, 4:26 PM EDTTornado WarningCARAroostook, Penobscot49 min
Aug 12, 5:29 PM EDTSevere Thunderstorm WarningCARAroostook46 min
Aug 12, 5:51 PM EDTTornado WarningCARAroostook49 min

Nearby

Flash Flood Warnings in Maine, 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.