Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 44, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2002, 1:18 AM CDT for Griggs County, North Dakota. It was in force for 42 min. 2 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
- Jun 9, 2002, 1:18 AM CDT (06:18 UTC)
- Expired
- Jun 9, 2002, 2:00 AM CDT
- In force
- 42 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Griggs County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 85 km from the middle of the area, began a volume at 06:18 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 |
|---|---|---|---|
| Jun 9, 1:30 AM CDT | Hail 1.75 | Sutton, ND | |
| Jun 9, 2:10 AM CDT | Hail 0.75 | Cooperstown, ND |
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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 6.3 hours before the alert went out and 189 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
- 51 J/kg
- Mixed-layer CIN
- -266 J/kg
- Mixed-layer LCL
- 1631 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 490 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 090618 SVRFAR NDC039-090700- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 117 AM CDT SUN JUN 9 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 200 AM CDT. * AT 113 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF MOSE...OR ABOUT 44 MILES SOUTH OF DEVILS LAKE...MOVEMENT WAS TO THE EAST AT 30 MPH. LARGE HAIL IS EXPECTED WITH THIS STORM. * THE SEVERE THUNDERSTORM WILL BE NEAR... MOSE AT 125 AM... BINFORD AT 135 AM... JESSIE AT 145 AM AND COOPERSTOWN AT 155 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4758 9871 4741 9873 4739 9806 4762 9808 06 NNNN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 8:55 PM CDT, 4 hours 23 minutes earlier.
Area forecast discussion, Jun 8, 8:55 PM CDT, 4 hours 23 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 855 PM CDT SAT JUN 8 2002 FORECAST CONCERNS OVERNIGHT REMAIN FOCUSED ON SEVERE THUNDERSTORM POTENTIAL AND HEAVY RAINFALL .CURRENT OVERVIEW... 01Z SFC ANALYSIS SHOWING CYCLONE CONTINUING TO DEVELOP IN EXTREME EASTERN WYOMING WITH INVERTED TROF EXTENDING NORTHWARD INTO EASTERN MONTANA. LATE AFTERNOON AND EARLY EVENING THUNDERSTORM ACTIVITY HAS DEVELOPED IN RESPONSE TO LOW LEVEL CONVERGENCE WITH THIS FEATURE. WARM FRONT FROM THE PARENT CYCLONE CONTINUES OVER EXTREME NORTHERN PORTION OF SOUTH DAKOTA. SFC DEW POINTS JUST SOUTH OF THE FRONT RAPIDLY CLIMB INTO THE MIDDLE 60S. THE DEW POINT GRADIENT REMAINS SHARP TO THE NORTH WITH LOWER 40S REMAINING OVER NORTHEASTERN NORTH DAKOTA. .SHORT TERM... THUNDERSTORM ACTIVITY WILL CONTINUE TO ORGANIZE INTO AN MCS ACROSS THE FORECAST AREA AS 50+KT LOW LEVEL JET LIFTS 340K 850 MB THETA-E AIR OVER THE WARM FRONT LATER THIS EVENING. 00Z ABR SOUNDING HAS A PRECIPITABLE WATER VALUE OF 1.5 INCHES...THUS FIRST ROUND OF HEAVY RAINFALL WILL BE SET OFF TONIGHT. CURRENT ZONE SET LOOKS IN GOOD SHAPE SO NO AMENDMENT PLANNED FOR WORDING. UPDATES FOR SPC WATCH BOX HEADLINES WILL DONE AT THE APPROPRIATE TIME. .FGF...FLOOD WATCH ENTIRE FORECAST AREA TONIGHT THROUGH MONDAY. BRAMER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 10:24 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 36 min |
| Jun 8, 10:59 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Traill | 46 min |
| Jun 8, 11:40 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 35 min |
| Jun 8, 11:58 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 47 min |
| Jun 9, 12:30 AM CDT | Severe Thunderstorm Warning | FGF | Nelson | 45 min |
| Jun 9, 12:37 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 38 min |
| Jun 9, 1:10 AM CDT | Flash Flood Warning | FGF | Eddy | 6 hr |
| Jun 9, 1:45 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 45 min |
| Jun 9, 2:00 AM CDT | Severe Thunderstorm Warning | FGF | Griggs, Steele | 45 min |
| Jun 9, 2:06 AM CDT | Flash Flood Warning | FGF | Grand Forks | 6 hr |
| Jun 9, 3:34 AM CDT | Flash Flood Warning | FGF | Benson, Nelson, Ramsey | 6 hr |
| Jun 9, 6:47 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom | 58 min |
| Jun 9, 7:15 AM CDT | Flash Flood Warning | FGF | Barnes, Cass | 4 hr |
| Jun 9, 7:17 AM CDT | Flash Flood Warning | FGF | Barnes, Cass | 4 hr |
| Jun 9, 9:42 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 48 min |
| Jun 9, 11:33 AM CDT | Flash Flood Warning | FGF | Grand Forks | 6 hr |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2002Every severe thunderstorm warning in 2002
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.