Alert archive / Minnesota / Tornado Warnings in 2014
Tornado Warning 18, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 21, 2014, 8:58 PM CDT for Pennington County, Polk County, Red Lake County, Minnesota. It was in force for 47 min. 9 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
- Jul 21, 2014, 8:58 PM CDT (01:58 UTC)
- Expired
- Jul 21, 2014, 9:45 PM CDT
- In force
- 47 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Pennington County, MN, Polk County, MN, Red Lake County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 71 km from the middle of the area, began a volume at 02:00 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 21, 9:10 PM CDT | TSTM WND DMG | Crookston, MN | MULTIPLE TREES DOWN VICINITY OF BEET PLANT. |
| Jul 21, 9:10 PM CDT | TSTM WND GST 80 | Crookston, MN | PERSONAL WEATHER STATION REPORTED AT LEAST 80 MPH. MULTIPLE 8 INCH DIAMETER TREES DOWN. |
| Jul 21, 9:20 PM CDT | TSTM WND DMG | Crookston, MN | MULTIPLE TREES DOWN VICINITY OF BEET PLANT. |
| Jul 21, 9:20 PM CDT | TSTM WND DMG | Gentilly, MN | 4 INCH DIAMETER TREE BRANCHES DOWN. STORM WINDOW BLOWN OFF HOUSE. |
| Jul 21, 9:20 PM CDT | TSTM WND DMG | Gentilly, MN | 4 INCH DIAMETER TREE BRANCHES DOWN.STORM WINDOW BLOWN OFF HOUSE. |
| Jul 21, 9:20 PM CDT | TSTM WND GST 80 | Crookston, MN | PERSONAL WEATHER STATION REPORTED AT LEAST 80 MPH. MULTIPLE 8 INCH DIAMETER TREES DOWN. |
| Jul 21, 9:22 PM CDT | TSTM WND DMG | 2 Nw Dorothy, MN | SEVERAL LARGE 4 TO 6 INCH DIAMETER TREE BRANCHES BROKEN DOWN IN SHELTER BELTS. |
| Jul 21, 9:30 PM CDT | TSTM WND DMG | Gentilly, MN | 4 INCH DIAMETER TREE BRANCHES DOWN.STORM WINDOW BLOWN OFF HOUSE. |
| Jul 21, 9:35 PM CDT | TSTM WND DMG | Red Lake Falls, MN | NUMEROUS TREES DOWN IN CITY AND POWER IS OUT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 21, 5:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 2.0 hours before the alert went out and 251 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
- 3234 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1331 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
470 WFUS53 KFGF 220158 TORFGF MNC113-119-125-220245- /O.NEW.KFGF.TO.W.0018.140722T0158Z-140722T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 858 PM CDT MON JUL 21 2014 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN PENNINGTON COUNTY IN NORTHWEST MINNESOTA... CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA... WESTERN RED LAKE COUNTY IN NORTHWEST MINNESOTA... * UNTIL 945 PM CDT * AT 857 PM CDT...A SEVERE SQUALL LINE CAPABLE OF PRODUCING TORNADOES THAT MAY NOT BE VISIBLE DUE TO HEAVY RAIN WAS LOCATED NEAR FISHER...AND MOVING NORTHEAST AT 35 MPH. HAZARD...TORNADO AND QUARTER SIZE HAIL. SOURCE...RADAR INDICATED ROTATION. IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. * THIS DANGEROUS STORM WILL BE NEAR... CROOKSTON AROUND 910 PM CDT. GENTILLY AROUND 920 PM CDT. HUOT AND DOROTHY AROUND 930 PM CDT. WYLIE AND RED LAKE FALLS AROUND 940 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND FORKS. && LAT...LON 4806 9638 4779 9617 4766 9679 4776 9688 TIME...MOT...LOC 0158Z 237DEG 30KT 4775 9677 TORNADO...RADAR INDICATED HAIL...1.00IN $$ JR
2 follow-up statements
151 WWUS53 KFGF 220217 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 917 PM CDT MON JUL 21 2014 MNC113-119-125-220245- /O.CON.KFGF.TO.W.0018.000000T0000Z-140722T0245Z/ PENNINGTON MN-RED LAKE MN-POLK MN- 917 PM CDT MON JUL 21 2014 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL POLK...WESTERN RED LAKE AND SOUTHWESTERN PENNINGTON COUNTIES UNTIL 945 PM CDT... AT 915 PM CDT...A SEVERE SQUALL LINE CAPABLE OF PRODUCING TORNADOES THAT MAY NOT BE VISIBLE DUE TO HEAVY RAIN WAS LOCATED NEAR HUOT...AND MOVING NORTHEAST AT 50 MPH. HAZARD...TORNADO AND QUARTER SIZE HAIL. SOURCE...RADAR INDICATED ROTATION. IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. THE DANGEROUS STORM WILL BE NEAR... RED LAKE FALLS AROUND 925 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND FORKS. && LAT...LON 4775 9641 4795 9656 4806 9638 4779 9617 TIME...MOT...LOC 0217Z 241DEG 45KT 4788 9639 TORNADO...RADAR INDICATED HAIL...1.00IN $$ JR
274 WWUS53 KFGF 220241 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 941 PM CDT MON JUL 21 2014 MNC113-119-125-220251- /O.EXP.KFGF.TO.W.0018.000000T0000Z-140722T0245Z/ PENNINGTON MN-RED LAKE MN-POLK MN- 941 PM CDT MON JUL 21 2014 ...THE TORNADO WARNING FOR CENTRAL POLK...WESTERN RED LAKE AND SOUTHWESTERN PENNINGTON COUNTIES WILL EXPIRE AT 945 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. HOWEVER...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4775 9641 4795 9656 4806 9638 4779 9617 TIME...MOT...LOC 0241Z 241DEG 45KT 4802 9600 $$ JR
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:48 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 57 min |
| Jul 21, 8:26 PM CDT | Flash Flood Warning | FGF | Polk | 6 hr |
| Jul 21, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman, Polk | 46 min |
| Jul 21, 9:08 PM CDT | Tornado Warning | FGF | Norman, Polk | 33 min |
| Jul 21, 9:15 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clay, Clearwater, Mahnomen, Marshall and 4 more | 60 min |
| Jul 21, 10:01 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Lake of the Woods, Mahnomen and 3 more | 59 min |
| Jul 21, 10:14 PM CDT | Special Weather Statement | FGF | Grant | 46 min |
| Jul 21, 10:32 PM CDT | Flash Flood Warning | FGF | Marshall, Pennington, Polk, Red Lake | 8 hr |
| Jul 21, 11:01 PM CDT | Special Weather Statement | FGF | Wadena | 29 min |
| Jul 21, 11:10 PM CDT | High Wind Warning | FGF | Mahnomen, Norman, Pennington, Polk, Red Lake | 5 hr |
| Jul 22, 12:08 AM CDT | Areal Flood Advisory | FGF | Beltrami, Lake of the Woods, Roseau | 7 hr |
| Jul 22, 6:28 AM CDT | River Flood Warning | FGF | Marshall | 42 hr |
| Jul 22, 6:28 AM CDT | River Flood Warning | FGF | Marshall | 3 days |
Nearby
Tornado Warnings in Minnesota, 2014Every tornado warning in 2014Tornadoes in 2014
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.