Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 362, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 26, 2001, 8:28 AM CDT for Ransom County, Richland County, Sargent County, North Dakota. It was in force for 47 min. 4 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
- Aug 26, 2001, 8:28 AM CDT (13:28 UTC)
- Expired
- Aug 26, 2001, 9:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Ransom County, ND, Richland County, ND, Sargent County, ND
The radar
The Aberdeen radar (KABR), 132 km from the middle of the area, began a volume at 13:29 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 |
|---|---|---|---|
| Aug 26, 8:40 AM CDT | Hail 0.75 | De Lamere, ND | |
| Aug 26, 8:45 AM CDT | Hail 0.75 | Wyndmere, ND | |
| Aug 26, 9:00 AM CDT | Hail 0.75 | Mc Leod, ND | |
| Aug 26, 9:05 AM CDT | Hail 0.75 | Barney, 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 1.5 hours before the alert went out and 182 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
- 632 J/kg
- Mixed-layer CIN
- -316 J/kg
- Mixed-layer LCL
- 1683 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 288 m²/s²
- 0-3 km storm-relative helicity
- 485 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 261328 SVRFAR SVRFAR NDC073-077-081-261415- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 828 AM CDT SUN AUG 26 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA AND EASTERN SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 915 AM CDT. * AT 824 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 38 MILES SOUTHWEST OF FARGO TO 40 MILES WEST OF WAHPETON...MOVEMENT WAS TO THE EAST AT 25 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... DE LAMERE AT 830 AM... CAYUGA AT 835 AM... HAMLIN AT 840 AM AND GENESEO AT 845 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4659 9746 4610 9754 4595 9699 4640 9680 $$ DK 08 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 Aug 26, 3:25 AM CDT, 5 hours 3 minutes earlier.
Area forecast discussion, Aug 26, 3:25 AM CDT, 5 hours 3 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 325 AM CDT SUN AUG 26 2001 FORECAST CHALLENGE FOR TODAY AND TONIGHT IS PCPN. CURRENT SATELLITE IMAGERY SHOWS CLOUD TOPS COOLING AS TSRA DEVELOPS IN WAA ZONE IN SE ND. LATEST MSAS SFC PRESSURE ANALYSIS HAS CWFA LOW IN NW SD...HIGH CENTERED IN CENTRAL MN...AND CWFA BETWEEN WITH SE-S RETURN FLOW STRENGTHENING. WHEN COMPARING INITIALIZATION CONDITIONS TO MODELS...AVN BEST MATCH...BUT ETA ALSO CLOSE. MODELS SIMILAR IN MOVING SFC LOW AND INVERTED TROF E INTO CWFA BY 18Z. WITH LIFTED INDICES DOWN TO -10...GOOD THETA-E RIDGE ALONG AND AHEAD OF TROF WITH PWS AROUND 1.5 INCHES...CAPES FROM 1500-3000 AND SWEAT INDICES FROM 350-400...HAVE GOOD POTENTIAL FOR CURRENT ELEVATED CONVECTION TO STRENGTHEN TO SVR LEVELS (WITH TORNADIC POTENTIAL) FOR A GOOD PORTION OF CWFA TODAY AND TONIGHT. BY 00Z...SFC LOW MOVES INTO W MN WITH INVERTED TROF TO NEAR INL...SO WILL NEED TO KEEP EVENING MENTION OF TSRA FOR MN SIDE WITH DECREASING CLOUDINESS ELSEWHERE. FORECAST CHALLENGE FOR MON IS TEMPS. MODELS SIMILAR IN MOVING NEXT SFC HIGH INTO REGION...PUTTING CWFA IN DRIER...COOLER NW FLOW. CURRENT FORECAST ALREADY HAD MON PRETTY WELL IN HAND...SO ONLY MINOR ADJUSTMENTS WERE NEEDED. AS FAR AS EXTENDED...STILL HAVE GOOD CONTINUITY WITH PRIOR FORECAST...SO WONT MAKE ANY CHANGES AT THIS TIME. .FGF...NONE. NG
In the hours before
Special weather statement, Aug 26, 6:50 AM CDT, 1 hour 38 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-261345- SPECIAL WEATHER STATEMENT HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 650 AM CDT SUN AUG 26 2001 ...SLIGHT RISK FOR SEVERE WEATHER IN PARTS OF EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA TODAY... SYNOPSIS...AN AREA OF LOW PRESSURE...CURRENTLY CENTERED BETWEEN BISMARCK AND MOBRIDGE...WILL MOVE EAST THROUGH THE REGION TODAY... PROVIDING THE FOCUS FOR THUNDERSTORM DEVELOPMENT...SOME OF WHICH COULD BE SEVERE. AREA OF CONCERN...SEVERE THUNDERSTORMS ARE POSSIBLE TODAY EAST OF A HALLOCK TO GRAND FORKS TO ECKELSON LINE. TIME...PRIMARILY IN EASTERN NORTH DAKOTA THIS MORNING. THEN...SLOWLY SHIFT INTO NORTHWEST AND WEST CENTRAL MINNESOTA BY THIS AFTERNOON. TYPE OF HAZARD...THE MAIN THREATS ARE LARGE HAIL AND VERY HEAVY RAIN...WITH ISOLATED TORNADOES ALSO POSSIBLE. NG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 5:05 AM CDT | Severe Thunderstorm Warning | FGF | Barnes | 40 min |
| Aug 26, 6:00 AM CDT | Severe Thunderstorm Warning | FGF | Barnes | 60 min |
| Aug 26, 6:28 AM CDT | Severe Thunderstorm Warning | FGF | Ransom | 62 min |
| Aug 26, 6:53 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 67 min |
| Aug 26, 6:59 AM CDT | Severe Thunderstorm Warning | FGF | Barnes | 46 min |
| Aug 26, 7:44 AM CDT | Severe Thunderstorm Warning | FGF | Richland, Sargent | 46 min |
| Aug 26, 7:48 AM CDT | Severe Thunderstorm Warning | FGF | Ransom | 42 min |
| Aug 26, 7:56 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 64 min |
| Aug 26, 8:01 AM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 59 min |
| Aug 26, 9:14 AM CDT | Severe Thunderstorm Warning | FGF | Richland | 46 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2001Every severe thunderstorm 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.