Alert archive / North Dakota / Tornado Warnings in 2013
Tornado Warning 8, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 21, 2013, 9:07 PM CDT for Ramsey County, Walsh County, North Dakota. It was in force for 38 min. 2 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, 2013, 9:07 PM CDT (02:07 UTC)
- Expired
- Jul 21, 2013, 9:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Ramsey County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 138 km from the middle of the area, began a volume at 02:10 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, 9:08 PM CDT | TORNADO | 1 S Starkweather, ND | REPORTED SIGHTING OF A BRIEF TORNADO ALONG HWY 20...DOWNING A FEW HIGH LINE WOODEN POWER POLES. TIME ESTIMATED FROM RADAR. |
| Jul 21, 9:15 PM CDT | TSTM WND DMG | 3 Se Starkweather, ND | HAIL DAMAGE TO CROPS. ALSO MAINLY SMALL BRANCHES DOWN...WITH ONE UPROOTED TREE. |
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, 2:43 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.1 hours before the alert went out and 249 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
- 1626 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1780 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
081 WFUS53 KFGF 220207 TORFGF NDC071-099-220245- /O.NEW.KFGF.TO.W.0008.130722T0207Z-130722T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 907 PM CDT SUN JUL 21 2013 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHERN RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA... NORTHWESTERN WALSH COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 945 PM CDT * AT 904 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED NEAR STARKWEATHER...AND MOVING EAST AT 35 MPH. HAZARD...TORNADO AND QUARTER SIZE HAIL. SOURCE...RADAR INDICATED ROTATION. IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. * THIS DANGEROUS STORM WILL BE NEAR... HAMPDEN AROUND 920 PM CDT. DERRICK AROUND 930 PM CDT. EDMORE AROUND 935 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 4853 9825 4834 9824 4838 9897 4854 9897 TIME...MOT...LOC 0206Z 274DEG 32KT 4847 9885 TORNADO...RADAR INDICATED HAIL...1.00IN $$ HOPPES
2 follow-up statements
404 WWUS53 KFGF 220221 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 921 PM CDT SUN JUL 21 2013 NDC071-099-220245- /O.CON.KFGF.TO.W.0008.000000T0000Z-130722T0245Z/ RAMSEY ND-WALSH ND- 921 PM CDT SUN JUL 21 2013 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN WALSH AND NORTHERN RAMSEY COUNTIES UNTIL 945 PM CDT... AT 919 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 7 MILES SOUTHWEST OF DERRICK...AND MOVING EAST AT 35 MPH. HAZARD...TORNADO AND QUARTER SIZE HAIL. SOURCE...RADAR INDICATED ROTATION. IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. THIS DANGEROUS STORM WILL BE NEAR... DERRICK AROUND 925 PM CDT. EDMORE AROUND 935 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND FORKS. && LAT...LON 4853 9825 4834 9824 4838 9897 4854 9897 TIME...MOT...LOC 0220Z 274DEG 32KT 4841 9864 TORNADO...RADAR INDICATED HAIL...1.00IN $$ HOPPES
529 WWUS53 KFGF 220245 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 945 PM CDT SUN JUL 21 2013 NDC071-099-220255- /O.EXP.KFGF.TO.W.0008.000000T0000Z-130722T0245Z/ RAMSEY ND-WALSH ND- 945 PM CDT SUN JUL 21 2013 ...THE TORNADO WARNING FOR NORTHWESTERN WALSH AND NORTHERN RAMSEY COUNTIES HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER...HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4853 9825 4834 9824 4838 9897 4854 9897 TIME...MOT...LOC 0245Z 274DEG 32KT 4839 9831 $$ HOPPES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:03 PM CDT | Special Weather Statement | FGF | Towner | 42 min |
| Jul 21, 8:51 PM CDT | Special Weather Statement | FGF | Ramsey | 39 min |
| Jul 21, 9:02 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey, Towner, Walsh | 58 min |
| Jul 21, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson, Ramsey, Walsh | 61 min |
| Jul 21, 11:00 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele, Traill | 60 min |
| Jul 21, 11:54 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Traill | 51 min |
Nearby
Tornado Warnings in North Dakota, 2013Every tornado warning in 2013Tornadoes in 2013
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.