Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 17, NWS Grand Forks, ND

July 18, 2001Lake of the Woods County, Roseau County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Jul 18, 2001, 10:14 PM CDT for Lake of the Woods County, Roseau County, Minnesota. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Jul 18, 2001, 10:14 PM CDT (03:14 UTC)
Expired
Jul 19, 2001, 1:00 AM CDT
In force
3 hr
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Lake of the Woods County, MN, Roseau County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 193 km from the middle of the area, began a volume at 03:11 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

TimeReportWhereRemark
Jul 18, 11:00 PM CDTFlash FloodPencer, MNSeveral roads were flooded.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.2 hours before the alert went out and 162 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, International Fa, MN at 00:00Z on 2001-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2275 joules per kilogram.LCLEL10008507005003002001001 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, International Fa, MN at 00:00Z on 2001-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
2275 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1506 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 190315
FFWFAR

MNC077-135-190600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1014 PM CDT WED JUL 18 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA AND
  ROSEAU COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 100 AM CDT

* AT 1001 PM CDT...DOPPLER RADAR AND SPOTTERS REPORTED SLOW MOVING   
  THUNDERSTORMS WITH HEAVY RAIN CONTINUED TO MOVE ACROSS EASTERN     
  ROSEAU AND MUCH OF LAKE OF THE WOODS COUNTIES. FLOODING HAS BEEN 
  REPORTED WITH THIS COMPLEX OF THUNDERSTORMS AS IT MOVED ACROSS
  KITTSON AND PEMBINA COUNTIES EARLIER IN THE EVENING.

* PENCER...OAKS CORNER...SALOL AND FAUNCE WILL BE AFFECTED BY THE 
  HEAVY RAIN. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE 
  POSSIBLE ESPECIALLY IN THE SWIFT...HAYES LAKE STATE PARK...FAUNCE 
  AND CARP AREAS THROUGH MIDNIGHT. FLOODING IS EXPECTED ALONG 
  PORTIONS OF THE ROSEAU AND WARROAD RIVERS AS WELL AS DITCHES AND 
  CULVERTS.

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR
VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL
FLOAT MOST CARS DOWNSTREAM.

THE FLASH FLOOD WARNINGS ISSUED EARLIER FOR NELSON AND PEMBINA 
COUNTIES OF NORTH DAKOTA AS WELL AS KITTSON COUNTY MINNESOTA HAVE 
BEEN ALLOWED TO EXPIRE AT 1015 PM. RUNOFF MAY CONTINUE ESPECIALLY IN 
THE KITTSON AND PEMBINA COUNTY AREAS WITH SOME PONDING POSSIBLE.

LAT...LON 4900 9637 4857 9638 4857 9518 4839 9520
          4838 9444 4912 9482 4900 9515 &

$$

EWENS
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 7:04 PM CDTSevere Thunderstorm WarningFGFKittson41 min
Jul 18, 7:08 PM CDTFlash Flood WarningFGFKittson3 hr
Jul 18, 7:23 PM CDTSevere Thunderstorm WarningFGFLake of the Woods52 min
Jul 18, 7:36 PM CDTTornado WarningFGFLake of the Woods39 min
Jul 18, 7:45 PM CDTSevere Thunderstorm WarningFGFKittson45 min
Jul 18, 7:54 PM CDTSevere Thunderstorm WarningFGFRoseau66 min
Jul 18, 8:09 PM CDTFlash Flood WarningFGFLake of the Woods, Roseau2 hr
Jul 18, 8:44 PM CDTTornado WarningFGFMarshall46 min
Jul 18, 8:50 PM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods55 min
Jul 18, 9:01 PM CDTSevere Thunderstorm WarningFGFRoseau29 min
Jul 18, 9:43 PM CDTSevere Thunderstorm WarningFGFLake of the Woods47 min
Jul 18, 9:51 PM CDTSevere Thunderstorm WarningFGFPolk39 min
Jul 18, 10:00 PM CDTSevere Thunderstorm WarningFGFBeltrami45 min
Jul 18, 10:32 PM CDTSevere Thunderstorm WarningFGFPolk28 min
Jul 18, 10:37 PM CDTSevere Thunderstorm WarningFGFMarshall38 min
Jul 18, 11:04 PM CDTSevere Thunderstorm WarningFGFBeltrami41 min
Jul 18, 11:11 PM CDTSevere Thunderstorm WarningFGFPennington49 min
Jul 18, 11:18 PM CDTTornado WarningFGFPennington, Red Lake27 min
Jul 18, 11:42 PM CDTTornado WarningFGFRed Lake33 min
Jul 19, 12:14 AM CDTTornado WarningFGFPolk31 min
Jul 19, 12:27 AM CDTFlash Flood WarningFGFMarshall, Polk2 hr
Jul 19, 12:54 AM CDTSevere Thunderstorm WarningFGFNorman66 min
Jul 19, 1:09 AM CDTSevere Thunderstorm WarningFGFPolk66 min
Jul 19, 1:28 AM CDTSevere Thunderstorm WarningFGFClay47 min
Jul 19, 1:59 AM CDTSevere Thunderstorm WarningFGFMarshall46 min
Jul 19, 2:05 AM CDTSevere Thunderstorm WarningFGFMahnomen, Norman40 min
Jul 19, 2:15 AM CDTSevere Thunderstorm WarningFGFClay30 min
Jul 19, 2:28 AM CDTSevere Thunderstorm WarningFGFBecker47 min
Jul 19, 2:52 AM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Hubbard38 min
Jul 19, 3:12 AM CDTSevere Thunderstorm WarningFGFBecker63 min

Nearby

Flash Flood Warnings in Minnesota, 2001Every flash flood warning in 2001

Sources

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