Alert archive / North Dakota / Flash Flood Warnings in 1998
Flash Flood Warning 7, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Jun 26, 1998, 5:55 PM CDT for Ransom County, Sargent County, North Dakota. It was in force for 3 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
- Jun 26, 1998, 5:55 PM CDT (22:55 UTC)
- Expired
- Jun 26, 1998, 9:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Ransom County, ND, Sargent County, ND
The radar
The Aberdeen radar (KABR), 109 km from the middle of the area, began a volume at 22:59 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
Aberdeen, SD (KABR), launched 12:00Z, 10.9 hours before the alert went out and 165 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
- 1341 J/kg
- Mixed-layer CIN
- -312 J/kg
- Mixed-layer LCL
- 1458 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 262257 FFWFAR NDC073-081-270200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 555 PM CDT FRI JUN 26 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... RANSOM COUNTY IN SOUTHEASTERN NORTH DAKOTA SARGENT COUNTY IN SOUTHEASTERN NORTH DAKOTA * UNTIL 900 PM CDT * AT 555 PM CDT DOPPLER RADAR INDICATED THAT 1 TO 3 INCHES OF RAIN HAVE FALLEN SINCE 445 PM CDT IN THE FORT RANSOM STATE PARK TO ELLIOT...GWINNER AND COGSWELL AREA. STRONG THUNDERSTORMS CONTINUE OVER THIS AREA WITH MORE INTENSE THUNDERSTORMS MOVING OUT OF NORTHEAST SOUTH DAKOTA INTO THE AREA. * THIS WARNING AFFECTS THE LISBON...GWINNER...FORMAN AND COGSWELL AREAS. IF FLASH FLOODING IS OBSERVED...MOVE QUICKLY TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. EWENS
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 4:29 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 46 min |
| Jun 26, 5:26 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland | 44 min |
| Jun 26, 6:03 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Richland | 47 min |
| Jun 26, 6:33 PM CDT | Flash Flood Warning | FGF | Cass, Richland | 2 hr |
Nearby
Flash Flood Warnings in North Dakota, 1998Every flash flood warning in 1998
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.