Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 42, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 2, 2012, 12:29 PM CDT for Cavalier County, Pembina County, North Dakota. It was in force for 31 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
- Jul 2, 2012, 12:29 PM CDT (17:29 UTC)
- Expired
- Jul 2, 2012, 1:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Cavalier County, ND, Pembina County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 159 km from the middle of the area, began a volume at 17:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 2, 11:43 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 5.5 hours before the alert went out and 318 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
- 3219 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 897 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.5
The text
As transmitted, in the capitals the NWS used until 2016.
165 WUUS53 KFGF 021729 SVRFGF NDC019-067-021800- /O.NEW.KFGF.SV.W.0042.120702T1729Z-120702T1800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1229 PM CDT MON JUL 2 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA... NORTHERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 100 PM CDT * AT 1225 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 WALHALLA...OR 21 MILES NORTHEAST OF LANGDON...MOVING TO THE NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LEROY AROUND 1240 PM CDT. NECHE AROUND 100 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4899 9729 4891 9728 4883 9804 4900 9812 TIME...MOT...LOC 1729Z 253DEG 31KT 4894 9793 WIND...HAIL <50MPH 1.00IN $$ VG
2 follow-up statements
381 WWUS53 KFGF 021747 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1247 PM CDT MON JUL 2 2012 NDC019-021757- /O.CAN.KFGF.SV.W.0042.000000T0000Z-120702T1800Z/ CAVALIER ND- 1247 PM CDT MON JUL 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4899 9793 4899 9729 4891 9728 4884 9793 TIME...MOT...LOC 1747Z 253DEG 31KT 4898 9778 $$ NDC067-021800- /O.CON.KFGF.SV.W.0042.000000T0000Z-120702T1800Z/ PEMBINA ND- 1247 PM CDT MON JUL 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA UNTIL 100 PM CDT... AT 1244 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 4 MILES NORTHWEST OF LEROY...OR 29 MILES NORTHEAST OF LANGDON...MOVING TO THE EAST AT 35 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... NECHE AROUND 100 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4899 9793 4899 9729 4891 9728 4884 9793 TIME...MOT...LOC 1747Z 253DEG 31KT 4898 9778 WIND...HAIL <50MPH 1.00IN $$ VG
746 WWUS53 KFGF 021757 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1257 PM CDT MON JUL 2 2012 NDC067-021807- /O.EXP.KFGF.SV.W.0042.000000T0000Z-120702T1800Z/ PEMBINA ND- 1257 PM CDT MON JUL 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4899 9793 4899 9729 4891 9728 4884 9793 TIME...MOT...LOC 1757Z 253DEG 31KT 4900 9765 $$ VG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 4:15 AM CDT | Heat Advisory | FGF | Barnes, Cass, Grand Forks, Pembina, Ransom, Richland and 4 more | 15 hr |
| Jul 2, 10:54 AM CDT | Special Weather Statement | FGF | Towner | 51 min |
| Jul 2, 10:57 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 32 min |
| Jul 2, 12:12 PM CDT | Special Weather Statement | FGF | Pembina | 48 min |
| Jul 2, 1:23 PM CDT | Special Weather Statement | FGF | Pembina | 37 min |
| Jul 2, 1:40 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 37 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.