Alert archive / North Dakota / Flash Flood Warnings in 2014
Flash Flood Warning 4, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Jul 21, 2014, 8:26 PM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It was in force for 6 hr. 4 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 21, 2014, 8:26 PM CDT (01:26 UTC)
- Expired
- Jul 22, 2014, 2:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Flood severity
- None
Counties Polk County, MN, Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 55 km from the middle of the area, began a volume at 01:30 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 21, 9:10 PM CDT | FLASH FLOOD | Grand Forks, ND | WATER FLOWING OVER BOTH WEST BOUND LANES ON WASHINGTON STREET NEAR JUNCTION WITH 32 AV S. |
| Jul 21, 9:15 PM CDT | FLASH FLOOD | Grand Forks, ND | SEVERAL INCHES OF WATER POOLING OVER STREETS EAST OF WASHINGTON ST. |
| Jul 21, 9:30 PM CDT | FLASH FLOOD | East Grand Forks, MN | STREET FLOODING |
| Jul 21, 10:00 PM CDT | FLASH FLOOD | 4 W Larimore, ND | SEVERAL SECTIONS OF RURAL TOWNSHIPS ROADS WERE PARTIALLY WASHED OUT IN LARIMORE...NIAGRA AND ELM GROVE TOWNSHIPS OF CENTRAL GRAND FORKS COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 1.4 hours before the alert went out and 294 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.
- Mixed-layer CAPE
- 3234 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1331 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
859 WGUS53 KFGF 220129 FFWFGF MNC119-NDC035-220700- /O.NEW.KFGF.FF.W.0004.140722T0129Z-140722T0700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 826 PM CDT MON JUL 21 2014 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA... * UNTIL 200 AM CDT * AT 826 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR SHOWS UP TO 4 INCHES OF RAIN IN THE LARIMORE DAM AREA AND STREET FLOODING WAS REPORTED IN LARIMORE. HEAVY RAINFALL RATES CONTINUE TO EXPAND INTO GRAND FORKS AND EAST GRAND FORKS AS WELL AND STREET FLOODING IS LIKELY IN AREAS OF POOR DRAINAGE. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...GRAND FORKS...EAST GRAND FORKS...LARIMORE...NORTHWOOD...ARVILLA... DAVIDSON AND EMERADO. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. && LAT...LON 4817 9680 4785 9678 4769 9774 4817 9777 $$ DTR
1 follow-up statement
905 WGUS73 KFGF 220655 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 155 AM CDT TUE JUL 22 2014 MNC119-NDC035-220710- /O.EXP.KFGF.FF.W.0004.000000T0000Z-140722T0700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ GRAND FORKS ND-POLK MN- 155 AM CDT TUE JUL 22 2014 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 200 AM CDT FOR NORTHWESTERN POLK AND GRAND FORKS COUNTIES... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED... PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND DONT DROWN. AVOID DRIVING ON FLOODED ROADS. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. && LAT...LON 4817 9680 4785 9678 4769 9774 4817 9777 $$ TG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:03 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 27 min |
| Jul 21, 7:26 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Eddy, Griggs, Nelson, Steele | 64 min |
| Jul 21, 7:30 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 60 min |
| Jul 21, 7:38 PM CDT | Tornado Warning | FGF | Eddy, Griggs, Nelson, Steele | 37 min |
| Jul 21, 7:48 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 57 min |
| Jul 21, 8:09 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Grand Forks, Griggs, Nelson, Steele and 2 more | 66 min |
| Jul 21, 8:29 PM CDT | Tornado Warning | FGF | Grand Forks | 46 min |
| Jul 21, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Grand Forks, Traill | 46 min |
| Jul 21, 11:10 PM CDT | High Wind Warning | FGF | Grand Forks, Traill | 5 hr |
| Jul 21, 8:58 PM CDT | Tornado Warning | FGF | Pennington, Polk, Red Lake | 47 min |
| Jul 21, 9:08 PM CDT | Tornado Warning | FGF | Norman, Polk | 33 min |
| Jul 21, 9:15 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clay, Clearwater, Mahnomen, Marshall and 4 more | 60 min |
| Jul 21, 10:01 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Lake of the Woods, Mahnomen and 3 more | 59 min |
| Jul 21, 10:14 PM CDT | Special Weather Statement | FGF | Grant | 46 min |
| Jul 21, 10:32 PM CDT | Flash Flood Warning | FGF | Marshall, Pennington, Polk, Red Lake | 8 hr |
| Jul 21, 11:01 PM CDT | Special Weather Statement | FGF | Wadena | 29 min |
| Jul 22, 12:08 AM CDT | Areal Flood Advisory | FGF | Beltrami, Lake of the Woods, Roseau | 7 hr |
| Jul 22, 6:28 AM CDT | River Flood Warning | FGF | Marshall | 42 hr |
| Jul 22, 6:28 AM CDT | River Flood Warning | FGF | Marshall | 3 days |
Nearby
Flash Flood Warnings in North Dakota, 2014Flash Flood Warnings in Minnesota, 2014Every flash flood warning in 2014
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.