Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 1, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 5, 2000, 8:12 PM CDT for Kittson County, Marshall County, Roseau County, Minnesota. It was in force for 33 min. 2 reports 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
- May 5, 2000, 8:12 PM CDT (01:12 UTC)
- Expired
- May 5, 2000, 8:45 PM CDT
- In force
- 33 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Kittson County, MN, Marshall County, MN, Roseau County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 130 km from the middle of the area, began a volume at 01:11 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
| Time | Report | Where | Remark |
|---|---|---|---|
| May 5, 8:40 PM CDT | Hail 1.75 | Greenbush, MN | |
| May 5, 8:42 PM CDT | Hail 0.88 | Karlstad, MN |
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, 1.2 hours before the alert went out and 246 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
- 443 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 1590 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 497 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 060113 SVRFAR MNC069-089-135-060145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 812 PM CDT FRI MAY 5 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA SOUTHEASTERN KITTSON COUNTY IN NORTHWEST MINNESOTA WEST CENTRAL ROSEAU COUNTY IN NORTHWEST MINNESOTA * UNTIL 845 PM CDT * AT 805 PM CDT...NATIONAL WEATHER SEVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTH OF DONALDSON...OR ABOUT 25 MILES EAST OF GRAFTON...MOVING NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KARL8STAD AT 830 PM CDT LEO AT 845 PM CDT REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4855 9697 4840 9682 4868 9614 4887 9633 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 May 5, 3:10 PM CDT, 5 hours 2 minutes earlier.
Area forecast discussion, May 5, 3:10 PM CDT, 5 hours 2 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 310 PM CDT FRI MAY 5 2000 FCST CHALLENGE...TSTMS TNGT...TEMPS AND RESIDUAL TSTMS TMRW. SYNOPSIS...LOW LEVEL MOISTURE AND INSTABILITY CONTINUE TO POOL IN EASTERN NORTH DAKOTA AND WEST CENTRAL MINNESOTA THIS AFTERNOON UNDER A FAIRLY STRONG MID LVL CAP. A WARM FRONTAL BOUNDARY EXTENDS FM A SFC LOW OVR THE BLACK HILLS...THROUGH SCNTRL ND INTO NCNTRL MN. WEAK ELEVATED CONVECTION PERSISTS NORTH OF THIS BOUNDARY...FM EXTREME NERN ND INTO NCNTRL MN. NEAR TERM...A 40KT LOW LVL JET EXTENDS THROUGH ERN SD ATTM...AND IS FCST TO ACCELERATE MOISTURE CONVERGENCE INTO ECNTRL ND FM LATE AFTERNOON INTO THE EARLY EVENING. JET STRENGTH INCREASES TOWARDS MIDNIGHT WITH MOISTURE FOCUS MOVING INTO THE NORTHERN RRV...SLOWLY SHIFTING INTO NW MN AFTER MIDNIGHT. MESOSCALE DYNAMICS WILL AMPLIFY THIS EVENING AND OVERNIGHT AS AN UPPER LEVEL DISTURBANCE APPROACHES FROM THE WEST AND MOVES ALONG THE BOUNDARY. MCS COULD POSSIBLE DEVELOP INTO NCNTRL ND THIS EVENING AND MOVE ACROSS THE NRN RRV WITH THE LOW LEVEL JET FOCUS. LAYER QVECTOR FORCING SHOWS GOOD LOW LVL CONVERGENCE ACRS ERN ND AND WRN MN TNGT...WITH MID AND UPR LVL QVECTOR DIVERGENCE ACRS NRN PORTIONS OF THE AREA INTO SRN MAN. HAVE UPDATED HWOFAR TO MENTION SVR THREAT NORTH OF A LINE FM LISBON...FARGO TO PARK RAPIDS THIS EVENING AND OVERNIGHT. MODEL GUIDANCE SUGGESTS BROAD AREA OF .25 TO .50 QPF ACROSS NRN PORTIONS OF THE CWFA. FOCUS AREA OF GTE .50 QPF IS POSSIBLE IN NRN MN AS POSSIBLE MCS STALLS TOWARDS MORNING. WITH PWS HOLDING AROUND 1.2 INCHES THIS SEEMS REASONABLE. SATURDAY...ETA/AVN MODEL GUIDANCE HAS HANDLED NRN PLAINS SYSTEM WELL LAST COUPLE RUNS SO WILL FOLLOW CLOSELY. RESIDUAL SWR/TSTM ACTIVITY EXPECTED IN NERN ZONES THROUGH SAT AM AS SFC LOW PRES TRACKS INTO NW MN. SFC BOUNDARY PUSHES BACK THROUGH MUCH OF FGF CWFA THROUGH MIDDAY SAT WITH BLAYER WINDS SHIFTING WEST TO NORTHWEST THROUGH THE DAY. COOLING H5 HEIGHTS AND AN APPCHG MID LVL SHTWV IN SRN CANADA SHUD LEAD TO SOME DESTABILIZATION LATE SATURDAY SO WILL INCLUDE MENTION OF SCT SHWRS AND ISOLD TSTMS INTO SAT PM. MID TERM...SUNDAY IS INDICATED AS FAIRLY DRY AND STABLE...WITH WEST TO NORTHWEST FLOW IN THE LOW LEVELS. FLOW ALOFT IS QUESTIONABLE AS H3 JET REMAINS OVR THE AREA. SRN ZONES EXPECTED TO DESTABILIZE SUN PM SO SCT SHRWS POSSIBLE. EXTENDED...DE-AMPLIFICATION IN PATTERN EXPECTED AFTER WEEKEND AS STONGER JET ENERGY CONCENTRATES FURTHER SOUTH TOWARD CENTRAL CA. RESULTANT SOUTHWARD SHIFT IN JET-STREAM MEANS MORE ZONAL FLO PATTERN HERE AND MAIN CYCLOGENESIS SOUTH OF CWA...CLOSER TO CENTRAL PLAINS. SOUTHERN CWA COULD BE ON NORTHERN EDGE OF 1ST SYSTEM ON MONDAY...SO WILL HOLD WITH CHANCE SHRA THERE WHICH IS IN CURRENT FORECAST. ECMWF...THE MODEL WHICH GRABBED ONTO THIS PATTERN EARLIER THAN MRF THIS WEEK...THEN ADVERTISES CLOSED U/L LO TO SKIRT NRN IA BY NEXT WED. MRF SLIGHTLY DIFFERENT...WITH STONGER SD LOW BY 12Z WED AND INVERTED TROF/THICKNESS RIDGE CENTERED OVER CWA. 00Z CANADIAN LESS AMPLIFIED...WITH NOGAPS LEANING CLOSER TO MRF. OVERALL...LOOKS TO BE CONTINUED UNSETTLED INTO MID-WEEK WITH SOMEWHAT COOLER REGIME BEFORE SW FLO ALOFT REGENERATES BY END OF NEXT WEEK...ONCE AGAIN PUMPING UP NORTHERN PLAINS RIDGE. .FGF...NONE. GUST/SOROKA
In the hours before
Local storm report, May 5, 2:22 PM CDT, 5 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
122 PM CST FRI MAY 05 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM STEPHEN MN 1.75 INCH HAIL
05/05/00 MARSHALL HAIL OCCURRED FROM 1930 TO
2000
0930 PM WARROAD MN .75 INCH HAIL
05/05/00 ROSEAU HAIL OCCURRED FROM 2130 TO
2145 CDT
0230 AM OSNABROCK ND 1.75 INCH HAIL
05/06/00 CAVALIER HAIL OCCURRED FROM 0230 TO
0245 CDT
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 8:44 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 46 min |
| May 5, 9:28 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods, Roseau | 42 min |
| May 5, 9:28 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 42 min |
| May 5, 10:03 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 37 min |
| May 5, 11:13 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Roseau | 32 min |
| May 5, 11:20 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 30 min |
| May 6, 12:12 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 28 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2000Every severe thunderstorm warning in 2000
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.