Alert archive / Maine / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Caribou, ME

July 9, 2021Hancock County, Penobscot County, Piscataquis County, Maine

NWS Caribou, ME issued this flash flood warning at Jul 9, 2021, 6:28 PM EDT for Hancock County, Penobscot County, Piscataquis County, Maine. It was in force for 3 hr. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 9, 2021, 6:28 PM EDT (22:28 UTC)
Expired: Jul 9, 2021, 9:14 PM EDT
In force: 3 hr
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Flood severity: None

Counties Hancock County, ME, Penobscot County, ME, Piscataquis County, ME

The radar

The Portland,ME radar (KGYX), 136 km from the middle of the area, began a volume at 22:29 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.

What was reported inside it

Time	Report	Where	Remark
Jul 9, 7:10 PM EDT	FLASH FLOOD	Bangor, ME	PERRY ROAD IS CLOSED AT THE ROUTE 202 OVERPASS DUE TO LOCALIZED STREET FLOODING.
Jul 9, 7:13 PM EDT	HEAVY RAIN 3.9	Hampden, ME
Jul 9, 8:00 PM EDT	FLASH FLOOD	Brewer, ME	CANTERBURY RD AND CHURCH RD FLOODED; AN EXIT ON 395 CLOSED DUE TO DIRT WASHOUT.
Jul 9, 8:29 PM EDT	HEAVY RAIN 4.75	Orrington, ME
Jul 9, 8:55 PM EDT	HEAVY RAIN 2	Parkman, ME

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 10.5 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 638 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 384 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

869 
WGUS51 KCAR 092228
FFWCAR
MEC009-019-021-100130-
/O.NEW.KCAR.FF.W.0003.210709T2228Z-210710T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Caribou ME
628 PM EDT Fri Jul 9 2021

The National Weather Service in Caribou has issued a

* Flash Flood Warning for...
  Southwestern Penobscot County in east central Maine...
  South Central Piscataquis County in north central Maine...
  West Central Hancock County in southeastern Maine...

* Until 930 PM EDT.

* At 628 PM EDT, local law enforcement reported heavy rain across 
  the warned area. Between 1 and 2 inches of rain have fallen. 
  Additional rainfall amounts of 1 to 2 inches are possible in the 
  warned area. Flash flooding is already occurring.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Law enforcement reported street flooding in the Bangor
           area.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Bangor, Old Town, Ellsworth, Bucksport, Dover-Foxcroft, Dexter, 
  Newport, Guilford, Orono, Brewer, Hampden, Hermon, Corinth, 
  Veazie, Dedham, Kenduskeag, Monson, Verona Island, Blanchard and 
  East Corinth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4517 6967 4540 6925 4458 6845 4451 6876
      4459 6872 4451 6878 4453 6880 4457 6879
      4457 6878 4462 6884 4467 6881 4470 6884
      4464 6918 4473 6921 4472 6927 4507 6936
      4505 6950 4502 6952 4501 6959

FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1 INCH IN 1 HOUR

$$

Farrar

2 follow-up statements

499 
WGUS71 KCAR 100001
FFSCAR

Flash Flood Statement
National Weather Service Caribou ME
801 PM EDT Fri Jul 9 2021

MEC009-019-021-100130-
/O.CON.KCAR.FF.W.0003.000000T0000Z-210710T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock ME-Penobscot ME-Piscataquis ME-
801 PM EDT Fri Jul 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT THIS 
EVENING FOR SOUTHWESTERN PENOBSCOT, SOUTH CENTRAL PISCATAQUIS AND 
WEST CENTRAL HANCOCK COUNTIES...

At 801 PM EDT, local law enforcement reported heavy rain across the 
warned area. Between 2 and 3.5 inches of rain have fallen. 
Additional rainfall amounts up to 0.5 inches are possible in the 
warned area before ending. Flash flooding is already occurring with 
Perry Road at Route 202 in the Bangor region closed due to street 
flooding.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Law enforcement reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Bangor, Old Town, Ellsworth, Bucksport, Dover-Foxcroft, Dexter, 
  Newport, Guilford, Orono, Brewer, Hampden, Hermon, Corinth, 
  Veazie, Dedham, Kenduskeag, Monson, Verona Island, Blanchard and 
  East Corinth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4517 6967 4540 6925 4458 6845 4451 6876
      4459 6872 4451 6878 4453 6880 4457 6879
      4457 6878 4462 6884 4467 6881 4470 6884
      4464 6918 4473 6921 4472 6927 4507 6936
      4505 6950 4502 6952 4501 6959

FLASH FLOOD...OBSERVED

$$

Farrar

085 
WGUS71 KCAR 100114
FFSCAR

Flash Flood Statement
National Weather Service Caribou ME
914 PM EDT Fri Jul 9 2021

MEC009-019-021-100124-
/O.CAN.KCAR.FF.W.0003.000000T0000Z-210710T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock ME-Penobscot ME-Piscataquis ME-
914 PM EDT Fri Jul 9 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN PENOBSCOT, 
SOUTH CENTRAL PISCATAQUIS AND WEST CENTRAL HANCOCK COUNTIES...

The heavy rain has come to an end, though light showers will remain 
for another hour. Flooding is no longer expected to pose a threat. 
Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 800 AM EDT Saturday for 
Portions of Central Highlands, Coastal DownEast, Far Eastern, 
Interior DownEast, and Penobscot Valley Maine.

LAT...LON 4517 6967 4540 6925 4458 6845 4451 6876
      4459 6872 4451 6878 4453 6880 4457 6879
      4457 6878 4462 6884 4467 6881 4470 6884
      4464 6918 4473 6921 4472 6927 4507 6936
      4505 6950 4502 6952 4501 6959

$$

Farrar

The office that day

Everything else NWS Caribou, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 3:50 AM EDT	Gale Warning	CAR		21 hr
Jul 9, 3:50 AM EDT	Small Craft Advisory	CAR		38 hr
Jul 9, 3:30 PM EDT	Wind Advisory	CAR	Hancock, Washington	9 hr
Jul 9, 4:44 PM EDT	Areal Flood Advisory	CAR	Hancock, Penobscot, Piscataquis, Washington	5 hr

Nearby

Flash Flood Warnings in Maine, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.