Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 355, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 26, 2001, 6:28 AM CDT for Ransom County, North Dakota. It was in force for 62 min. 1 report 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, 6:28 AM CDT (11:28 UTC)
- Expired
- Aug 26, 2001, 7:30 AM CDT
- In force
- 62 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Ransom County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 113 km from the middle of the area, began a volume at 11:28 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, 7:00 AM CDT | Thunderstorm Wind | Anselm, ND | Branches were blown down. |
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 00:00Z, 11.5 hours before the alert went out and 191 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
- 1006 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1960 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 261128 SVRFAR SVRFAR NDC073-261230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 628 AM CDT SUN AUG 26 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 730 AM CDT. * AT 623 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF ENDERLIN...OR ABOUT 29 MILES SOUTHEAST OF VALLEY CITY...MOVEMENT WAS TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ENDERLIN AT 635 AM... ANSELM AT 645 AM AND VENLO AT 650 AM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4662 9785 4646 9786 4638 9736 4662 9734 $$ DJK 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, 3 hours 3 minutes earlier.
Area forecast discussion, Aug 26, 3:25 AM CDT, 3 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
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, 6:53 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, 8:28 AM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland, Sargent | 47 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.