Alert archive / North Dakota / Tornado Warnings in 2013
Tornado Warning 18, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Oct 11, 2013, 5:35 PM CDT for Griggs County, Nelson County, Steele County, North Dakota. It was in force for 25 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
- Oct 11, 2013, 5:35 PM CDT (22:35 UTC)
- Expired
- Oct 11, 2013, 6:00 PM CDT
- In force
- 25 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Griggs County, ND, Nelson County, ND, Steele County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 61 km from the middle of the area, began a volume at 22:36 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 |
|---|---|---|---|
| Oct 11, 5:40 PM CDT | FUNNEL CLOUD | 3 Ne Cooperstown, ND | BRIEF FUNNEL OBSERVED. |
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 |
|---|---|---|---|
| Oct 11, 12:16 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.6 hours before the alert went out and 222 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
- 209 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
580 WFUS53 KFGF 112235 TORFGF NDC039-063-091-112300- /O.NEW.KFGF.TO.W.0018.131011T2235Z-131011T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 535 PM CDT FRI OCT 11 2013 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN GRIGGS COUNTY IN SOUTHEAST NORTH DAKOTA... SOUTHEASTERN NELSON COUNTY IN NORTHEAST NORTH DAKOTA... NORTHWESTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 600 PM CDT * AT 532 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED NEAR COOPERSTOWN...AND MOVING NORTH AT 35 MPH. HAZARD...TORNADO. SOURCE...RADAR INDICATED ROTATION. IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. * THIS DANGEROUS STORM WILL BE NEAR... ANETA AROUND 555 PM CDT. KLOTEN AND MCVILLE AROUND 600 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 4791 9824 4791 9790 4740 9792 4739 9820 TIME...MOT...LOC 2235Z 180DEG 44KT 4744 9807 TORNADO...RADAR INDICATED HAIL...0.00IN $$ VOELKER
2 follow-up statements
762 WWUS53 KFGF 112249 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 549 PM CDT FRI OCT 11 2013 NDC039-063-091-112300- /O.CON.KFGF.TO.W.0018.000000T0000Z-131011T2300Z/ GRIGGS ND-NELSON ND-STEELE ND- 549 PM CDT FRI OCT 11 2013 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN STEELE... SOUTHEASTERN NELSON AND NORTHEASTERN GRIGGS COUNTIES UNTIL 600 PM CDT... AT 546 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 8 MILES WEST OF SHARON...AND MOVING NORTH AT 40 MPH. HAZARD...TORNADO. SOURCE...RADAR INDICATED ROTATION. IMPACT...SPORADIC DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. THIS DANGEROUS STORM WILL BE NEAR... ANETA AROUND 555 PM CDT. KLOTEN AND MCVILLE AROUND 600 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND FORKS. && LAT...LON 4791 9824 4791 9790 4750 9792 4750 9821 TIME...MOT...LOC 2248Z 180DEG 44KT 4760 9807 TORNADO...RADAR INDICATED HAIL...0.00IN $$ VOELKER
961 WWUS53 KFGF 112300 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 600 PM CDT FRI OCT 11 2013 NDC039-063-091-112310- /O.EXP.KFGF.TO.W.0018.000000T0000Z-131011T2300Z/ GRIGGS ND-NELSON ND-STEELE ND- 600 PM CDT FRI OCT 11 2013 ...THE TORNADO WARNING FOR NORTHWESTERN STEELE...SOUTHEASTERN NELSON AND NORTHEASTERN GRIGGS 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. LAT...LON 4791 9824 4791 9790 4750 9792 4750 9821 TIME...MOT...LOC 2249Z 180DEG 44KT 4761 9807 $$ VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 4:01 AM CDT | Wind Advisory | FGF | Ransom, Richland, Sargent | 15 hr |
| Oct 11, 4:23 PM CDT | Special Weather Statement | FGF | Barnes, Griggs | 67 min |
| Oct 11, 6:04 PM CDT | Tornado Warning | FGF | Cass, Traill | 41 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.