Alert archive / Minnesota / Flash Flood Warnings in 2011

Flash Flood Warning 15, NWS Grand Forks, ND

August 19, 2011Beltrami County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Aug 19, 2011, 2:22 AM CDT for Beltrami County, Minnesota. It was in force for . No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 19, 2011, 2:22 AM CDT (07:22 UTC)
Expired: Aug 19, 2011, 12:15 AM CDT
In force
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Flood severity: None

County Beltrami County, MN

The radar

The Duluth radar (KDLH), 194 km from the middle of the area, began a volume at 07:23 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.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 7.4 hours before the alert went out and 155 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: 814 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1678 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

787 
WGUS53 KFGF 190724
FFWFGF
MNC007-190515-
/O.NEW.KFGF.FF.W.0015.110819T0724Z-110819T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
222 AM CDT FRI AUG 19 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA...

* UNTIL 1215 AM CDT

* AT 222 AM CDT...WEATHER SPOTTERS REPORTED STREET FLOODING IN 
DOWNTOWN BEMIDJI.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BEMIDJI...
  LAVINIA...PENNINGTON AND ROSBY.

THE FOLLOWING AREAS ARE INCLUDED IN THE WARNING...STREETS... DITCHES 
AND SMALL STREAMS NEAR THE MISSISSIPPI RIVER AND TURTLE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING
ARE HARD TO RECOGNIZE.

TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD
RELATED DEATHS OCCUR IN AUTOMOBILES.

&&

LAT...LON 4741 9441 4742 9489 4757 9488 4757 9441

$$

GUST

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 19, 12:22 AM CDT	Severe Thunderstorm Warning	FGF	Polk, Red Lake	53 min
Aug 19, 12:53 AM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Mahnomen, Polk	37 min
Aug 19, 1:10 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clearwater, Hubbard, Mahnomen	50 min
Aug 19, 1:22 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater	38 min
Aug 19, 1:30 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Hubbard, Polk	30 min
Aug 19, 1:55 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	50 min
Aug 19, 2:30 AM CDT	Flash Flood Warning	FGF	Beltrami	3 hr

Nearby

Flash Flood Warnings in Minnesota, 2011 Every flash flood warning in 2011

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; radar from the NEXRAD Level II archive.