Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 40, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 30, 2012, 9:20 PM CDT for Griggs County, Steele County, North Dakota. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2012, 9:20 PM CDT (02:20 UTC)
- Expired
- Jun 30, 2012, 9:52 PM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Griggs County, ND, Steele County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 40 km from the middle of the area, began a volume at 02:23 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.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.3 hours before the alert went out and 229 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
- 1260 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1979 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
160 WUUS53 KFGF 010220 SVRFGF NDC039-091-010315- /O.NEW.KFGF.SV.W.0040.120701T0220Z-120701T0315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 920 PM CDT SAT JUN 30 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA... SOUTHWESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 1015 PM CDT * AT 918 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 6 MILES SOUTHEAST OF COOPERSTOWN...OR 32 MILES NORTH OF VALLEY CITY...MOVING TO THE EAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... FINLEY AROUND 930 PM CDT. HOPE AND BLABON AROUND 935 PM CDT. SHERBROOKE AND COLGATE AROUND 940 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4755 9764 4724 9760 4725 9811 4749 9817 TIME...MOT...LOC 0220Z 260DEG 39KT 4739 9799 WIND...HAIL <50MPH 1.00IN $$ DK
2 follow-up statements
314 WWUS53 KFGF 010234 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 934 PM CDT SAT JUN 30 2012 NDC039-010244- /O.CAN.KFGF.SV.W.0040.000000T0000Z-120701T0315Z/ GRIGGS ND- 934 PM CDT SAT JUN 30 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4726 9789 4747 9797 4755 9764 4724 9760 TIME...MOT...LOC 0234Z 260DEG 39KT 4740 9781 $$ NDC091-010315- /O.CON.KFGF.SV.W.0040.000000T0000Z-120701T0315Z/ STEELE ND- 934 PM CDT SAT JUN 30 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA UNTIL 1015 PM CDT... AT 932 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 3 MILES WEST OF BLABON...OR 33 MILES NORTH OF VALLEY CITY...MOVING TO THE EAST AT 45 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... SHERBROOKE...HOPE AND COLGATE AROUND 940 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4726 9789 4747 9797 4755 9764 4724 9760 TIME...MOT...LOC 0234Z 260DEG 39KT 4740 9781 WIND...HAIL <50MPH 1.00IN $$ DK
575 WWUS53 KFGF 010252 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 952 PM CDT SAT JUN 30 2012 NDC091-010302- /O.CAN.KFGF.SV.W.0040.000000T0000Z-120701T0315Z/ STEELE ND- 952 PM CDT SAT JUN 30 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. LAT...LON 4726 9789 4747 9797 4755 9764 4724 9760 TIME...MOT...LOC 0252Z 260DEG 39KT 4743 9752 $$ DK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:24 PM CDT | Special Weather Statement | FGF | Barnes | 66 min |
| Jun 30, 8:52 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.