Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 135, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 18, 2001, 12:30 AM CDT for Barnes County, Cass County, North Dakota. It was in force for 45 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
- Jul 18, 2001, 12:30 AM CDT (05:30 UTC)
- Expired
- Jul 18, 2001, 1:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Barnes County, ND, Cass County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 55 km from the middle of the area, began a volume at 05:30 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 |
|---|---|---|---|
| Jul 18, 12:35 AM CDT | Hail 0.75 | Valley City, ND | |
| Jul 18, 1:15 AM CDT | Hail 0.75 | Tower City, 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 00:00Z, 5.5 hours before the alert went out and 253 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
- 2561 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 2319 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 12.1
The text
As transmitted, in the capitals the NWS used until 2016.
679 WUUS53 KFGF 180530 SVRFAR NDC003-017-180615- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1230 AM CDT WED JUL 18 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN BARNES COUNTY IN SOUTHEAST NORTH DAKOTA AND NORTHWESTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 115 AM CDT. * AT 1225 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 13 MILES SOUTHWEST OF PAGE...OR ABOUT 14 MILES NORTHEAST OF VALLEY CITY...MOVEMENT WAS TO THE EAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PAGE AT 115 AM CDT. DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. IF SEVERE WEATHER IS OBSERVED CONTACT YOUR LOCAL LAW ENFORCEMENT AND ASK THEM TO RELAY YOUR INFORMATION TO THE NATIONAL WEATHER SERVICE. LAT...LON 4720 9795 4699 9793 4701 9742 4722 9743 $$ 14 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 Jul 17, 8:00 PM CDT, 4 hours 30 minutes earlier.
Area forecast discussion, Jul 17, 8:00 PM CDT, 4 hours 30 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 800 PM CDT TUE JUL 17 2001 ...DUE TO ONGOING SEVERE WEATHER...THE EVENING AFfD WILL BE DELAYED... THE EVENING FORECAST DISCUSSION AND ZONE UPDATES WILL OCCUR ONCE THE SEVERE WEATHER SUBSIDES... RJT
In the hours before
Special weather statement, Jul 17, 7:29 PM CDT, 5 hours 1 minute before
NDZ014-015-024-026>030-180100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 729 PM CDT TUE JUL 17 2001 ...SEVERE THUNDERSTORM WATCH HAS EXPIRED... AT 700 PM CDT...THE ATMOSPHERE HAS STABILIZED OVER BENSON... RAMSEY...NELSON...GRAND FORKS...EDDY...GRIGGS...STEELE AND TRAILL COUNTIES OF EASTERN NORTH DAKOTA. WHILE SCATTERED THUNDERSTORMS ARE POSSIBLE...NO SEVERE WEATHER IS EXPECTED. A TORNADO WATCH REMAINS IN EFFECT FOR SOUTHEAST NORTH DAKOTA AND MUCH OF NORTHWEST MINNESOTA UNTIL MIDNIGHT CDT. RJT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:03 PM CDT | Tornado Warning | FGF | Ransom | 42 min |
| Jul 17, 7:27 PM CDT | Tornado Warning | FGF | Richland | 48 min |
| Jul 17, 7:41 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey, Walsh | 49 min |
| Jul 17, 7:47 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 43 min |
| Jul 17, 8:10 PM CDT | Tornado Warning | FGF | Richland | 35 min |
| Jul 17, 8:13 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 47 min |
| Jul 17, 8:37 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 53 min |
| Jul 17, 8:42 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 48 min |
| Jul 17, 8:58 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 32 min |
| Jul 17, 9:29 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland | 31 min |
| Jul 17, 9:38 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 37 min |
| Jul 17, 9:57 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 48 min |
| Jul 17, 10:05 PM CDT | Severe Thunderstorm Warning | FGF | Sargent | 40 min |
| Jul 17, 10:11 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 34 min |
| Jul 17, 10:40 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 35 min |
| Jul 17, 11:50 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 40 min |
| Jul 18, 12:56 AM CDT | Severe Thunderstorm Warning | FGF | Griggs | 49 min |
| Jul 18, 1:12 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 63 min |
| Jul 18, 2:07 AM CDT | Severe Thunderstorm Warning | FGF | Steele | 38 min |
| Jul 18, 2:13 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 62 min |
| Jul 18, 3:41 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 49 min |
| Jul 18, 4:22 PM CDT | Tornado Warning | FGF | Pembina | 38 min |
| Jul 18, 5:43 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 47 min |
| Jul 18, 5:57 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 48 min |
| Jul 18, 6:00 PM CDT | Tornado Warning | FGF | Nelson | 30 min |
| Jul 18, 6:04 PM CDT | Tornado Warning | FGF | Griggs | 26 min |
| Jul 18, 6:26 PM CDT | Tornado Warning | FGF | Griggs, Nelson, Steele | 49 min |
| Jul 18, 6:32 PM CDT | Tornado Warning | FGF | Walsh | 43 min |
| Jul 18, 6:36 PM CDT | Tornado Warning | FGF | Pembina | 24 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.