Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 2, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 1, 2012, 5:04 PM CDT for Benson County, Nelson County, Ramsey County, North Dakota. It was in force for 56 min. 3 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
- May 1, 2012, 5:04 PM CDT (22:04 UTC)
- Expired
- May 1, 2012, 6:00 PM CDT
- In force
- 56 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Benson County, ND, Nelson County, ND, Ramsey County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 108 km from the middle of the area, began a volume at 22:04 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 1, 5:15 PM CDT | HAIL 0.75 | 4 S Crary, ND | |
| May 1, 5:22 PM CDT | HAIL 0.88 | 6 Sse Crary, ND | PEA TO NICKEL SIZED HAIL COMPLETELY COVERING THE GROUND. |
| May 1, 5:35 PM CDT | HAIL 1 | 7 Sw Lakota, ND | NUMEROUS DIME TO QUARTER SIZED HAIL. HAIL NEARLY COVERED THE ROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.1 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1704 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
580 WUUS53 KFGF 012204 SVRFGF NDC005-063-071-012300- /O.NEW.KFGF.SV.W.0002.120501T2204Z-120501T2300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 504 PM CDT TUE MAY 1 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN BENSON COUNTY IN NORTHEAST NORTH DAKOTA... WEST CENTRAL NELSON COUNTY IN NORTHEAST NORTH DAKOTA... SOUTH CENTRAL RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 600 PM CDT * AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 7 MILES EAST OF TOKIO...OR 14 MILES SOUTHEAST OF DEVILS LAKE...MOVING TO THE EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CRARY AROUND 515 PM CDT. DOYON AROUND 535 PM CDT. STUMP LAKE AROUND 550 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4819 9843 4789 9835 4785 9876 4802 9882 TIME...MOT...LOC 2204Z 256DEG 11KT 4796 9866 WIND...HAIL <50MPH 1.00IN $$ HOPPES
3 follow-up statements
788 WWUS53 KFGF 012226 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 526 PM CDT TUE MAY 1 2012 NDC005-063-071-012300- /O.CON.KFGF.SV.W.0002.000000T0000Z-120501T2300Z/ BENSON ND-NELSON ND-RAMSEY ND- 526 PM CDT TUE MAY 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL RAMSEY...WEST CENTRAL NELSON AND SOUTHEASTERN BENSON COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL 600 PM CDT... AT 522 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 5 MILES SOUTH OF DOYON...OR 18 MILES SOUTHEAST OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... STUMP LAKE AROUND 535 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4819 9843 4789 9835 4785 9876 4802 9882 TIME...MOT...LOC 2226Z 257DEG 16KT 4798 9851 $$ HOPPES
960 WWUS53 KFGF 012242 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 542 PM CDT TUE MAY 1 2012 NDC005-063-071-012300- /O.CON.KFGF.SV.W.0002.000000T0000Z-120501T2300Z/ BENSON ND-NELSON ND-RAMSEY ND- 542 PM CDT TUE MAY 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN RAMSEY...WEST CENTRAL NELSON AND EXTREME SOUTHEASTERN BENSON COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL 600 PM CDT... AT 540 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 5 MILES SOUTHWEST OF LAKOTA...OR 23 MILES EAST OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN BENSON...SOUTHEASTERN RAMSEY AND WEST CENTRAL NELSON COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. && LAT...LON 4786 9870 4815 9852 4819 9843 4789 9835 TIME...MOT...LOC 2242Z 257DEG 16KT 4800 9841 $$ HOPPES
993 WWUS53 KFGF 012259 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 559 PM CDT TUE MAY 1 2012 NDC005-063-071-012310- /O.EXP.KFGF.SV.W.0002.000000T0000Z-120501T2300Z/ BENSON ND-NELSON ND-RAMSEY ND- 559 PM CDT TUE MAY 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RAMSEY...WEST CENTRAL NELSON AND EXTREME SOUTHEASTERN BENSON COUNTIES IN NORTHEAST NORTH DAKOTA HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4786 9870 4815 9852 4819 9843 4789 9835 TIME...MOT...LOC 2300Z 257DEG 16KT 4802 9829 $$ HOPPES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 2:13 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 32 min |
| May 1, 5:55 PM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 65 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.