Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 3, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 1, 2012, 5:55 PM CDT for Pembina County, Walsh County, North Dakota. It was in force for 65 min. 1 report 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, 5:55 PM CDT (22:55 UTC)
- Expired
- May 1, 2012, 7:00 PM CDT
- In force
- 65 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Pembina County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 125 km from the middle of the area, began a volume at 22:59 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, 6:25 PM CDT | HAIL 1 | 6 Ese Crystal, ND | VERY HEAVY RAINS AND LOTS OF DIME TO QUARTER SIZED HAIL FELL OVER A FIVE MINUTE PERIOD... UNTIL ABOUT 630 PM CDT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 10.9 hours before the alert went out and 306 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
- 1266 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
075 WUUS53 KFGF 012255 SVRFGF NDC067-099-020000- /O.NEW.KFGF.SV.W.0003.120501T2255Z-120502T0000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 555 PM CDT TUE MAY 1 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA... NORTHEASTERN WALSH COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 700 PM CDT * AT 554 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 5 MILES SOUTHEAST OF GARDAR...OR 20 MILES NORTHWEST OF GRAFTON...MOVING TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HOOPLE AND CRYSTAL AROUND 600 PM CDT. ST. THOMAS AROUND 625 PM CDT. GLASSTON AROUND 630 PM CDT. DRAYTON AROUND 650 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4878 9721 4853 9717 4850 9784 4863 9789 TIME...MOT...LOC 2255Z 257DEG 22KT 4857 9772 WIND...HAIL <50MPH 1.00IN $$ HOPPES
2 follow-up statements
876 WWUS53 KFGF 012318 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 618 PM CDT TUE MAY 1 2012 NDC067-099-020000- /O.CON.KFGF.SV.W.0003.000000T0000Z-120502T0000Z/ PEMBINA ND-WALSH ND- 618 PM CDT TUE MAY 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN WALSH AND SOUTHERN PEMBINA COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL 700 PM CDT... AT 616 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 4 MILES NORTHEAST OF HOOPLE...OR 13 MILES NORTHWEST OF GRAFTON...MOVING TO THE EAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... ST. THOMAS AROUND 625 PM CDT. GLASSTON AROUND 630 PM CDT. DRAYTON AROUND 655 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4878 9721 4853 9717 4850 9784 4863 9789 TIME...MOT...LOC 2317Z 257DEG 22KT 4857 9752 $$ HOPPES
886 WWUS53 KFGF 012356 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 656 PM CDT TUE MAY 1 2012 NDC067-099-020006- /O.EXP.KFGF.SV.W.0003.000000T0000Z-120502T0000Z/ PEMBINA ND-WALSH ND- 656 PM CDT TUE MAY 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WALSH AND SOUTHERN PEMBINA COUNTIES IN NORTHEAST NORTH DAKOTA WILL EXPIRE AT 700 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4878 9721 4853 9717 4850 9784 4863 9789 TIME...MOT...LOC 2356Z 257DEG 22KT 4858 9718 $$ 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, 5:04 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Nelson, Ramsey | 56 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.