Alert archive / North Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 19, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 17, 1986, 10:05 PM CDT for Cass County, North Dakota; Clay County, Minnesota. It was in force for 55 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 17, 1986, 10:05 PM CDT (03:05 UTC)
- Expired
- Jun 17, 1986, 11:00 PM CDT
- In force
- 55 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Clay County, MN, Cass County, ND
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 17, 10:07 PM CDT | Hail 1.75 | Cass, ND | |
| Jun 17, 10:25 PM CDT | Hail 1 | Cass, ND | |
| Jun 17, 10:51 PM CDT | Hail 3 | Cass, ND |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Aberdeen, SD (KHON), launched 00:00Z, 3.1 hours before the alert went out and 253 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
- 3854 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1590 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 14.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 180305 SVRFAR NDC017-MNC027-180400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FARGO ND 1005 PM CDT TUE JUN 17 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL NORTH DAKOTA...CASS AND THE CITIES OF FARGO/MOORHEAD NORTHWEST MINNESOTA...CLAY AT 958 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 20 MILES WEST OF FARGO NORTH DAKOTA OR AT THE TOWN OF CASSELTON. THIS THUNDERSTORM WAS MOVING TO THE SOUTHEAST AT 35 MILES AN HOUR. ALSO AT 958 PM CDT...ONE INCH SIZE HAIL WAS REPORTED AT THE TOWN OF CASSELTON NORTH DAKOTA. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 OF AN INCH OR LARGER...DEADLY LIGHTNING... AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO YOU SHOULD BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY. IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF SAFETY IMMEDIATELY. REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY sAFTER THE STORM PASSES. MB
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Jun 17, 4:12 PM CDT, 5 hours 53 minutes before
STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
400 PM CDT TUE JUN 17 1986
TIME EVENT
330 PM OTTERTAIL COUNTY MN REPORTED 3/4 INCH HAIL AT ELBOW LAKE MN
25 MILES WEST OF ALEXANDRIA MN
345 PM GRANT COUNTY SHERIFF REPORTED 3/4 INCH HAIL AT HOFFMAN MN
18 MILES WEST OF ALEXANDRIA MN
346 PM DOUGLAS COUNTY MN SHERIFF REPORTED PEAS SIZE HAIL AND VERY
HEAVY RAIN AT KENSINGTON MN 15 MILES WEST OF ALEXANDRIA MN
357 PM ALEXANDRIA MN PD REPORTED GOLFBALL SIZE HAIL AT KENSINGTON MN
15 MILES WEST OF ALEXANDRIA MN
358 PM ALEXANDRIA MN PD REPORTED A FUNNEL CLOUD BY PUBLIC ABOUT 5
MILES NORTH OF GARFIELD MN 10 MILES WEST OF ALEXA NDRIA MN
(FARGO SVR OUT UNTIL 430 PM)Special weather statement, Jun 17, 5:42 PM CDT, 4 hours 23 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE FARGO ND
535 PM CDT TUE JUN 17 1986
...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHEAST NORTH DAKOTA..
NORTHEAST SOUTH DAKOTA AND CENTRAL MINNESOTA UNTIL 1100 PM...
AT 525 PM CDT...WIDELY SCATTERED INTENSE THUNDERSTORMS CONTINUED OVER
A SMALL PART OF WEST CENTRAL MINNESOTA AND HAD MOVED INTO EXTREME
NORTHEAST SOUTH DAKOTA.
THE STRONGEST STORM WAS IN WEST CENTRAL MINNESOTA 10 MILES SOUTH OF
ALEXANDRIA. THIS STORM WILL PASS NEAR THE GLENWOOD AREA BY 600 PM CDT.
ANOTHER STRONG THUNDERSTORM WAS OVER THE EXTREME NORTHEAST CORNER OF
SOUTH DAKOTA 50 MILES NORTHEAST OF ABERDEEN. THIS STORM WILL MOVE
THROUGH THE SISSETON AREA BY 630 PM CDT.
THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN...STRONG WINDS..
DANGEROUS LIGHTNING STRIKES AND HAIL. PERSONS NEAR THESE STORMS SHOULD
BE ALERT AND BE PREPARED TO SEEK SHELTER IF NECESSARY.
ELSEWHERE...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER
PARTS OF THE SOUTHEAST QUARTER OF NORTH DAKOTA...EXTREME NORTHEAST
SOUTH DAKOTA...CENTRAL AND WEST CENTRAL MINNESOTA.
MOVEMENT OF THE SHOWERS AND THUNDERSTORMS WAS SOUTHEAST AT 35 MPH.
NO SEVERE WEATHER HAD BEEN REPORTED IN THE AREA SINCE 425 PM..HOWEVER
CONDITIONS REMAIN FAVORABLE FOR THE FORMATION OF SEVERE WEATHER IN AND
NEAR THE WATCH AREA. PERSONS IN THE WATCH AREA SHOULD STAY ALERT AND
LISTEN TO RADIO AND TV STATIONS FOR FURTHER S{TATEMENTS AND WARNINGS.
VOELKERSpecial weather statement, Jun 17, 6:33 PM CDT, 3 hours 32 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 635 PM CDT TUE JUN 17 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHEAST NORTH DAKOTA.. NORTHEAST SOUTH DAKOTA AND CENTRAL MINNESOTA UNTIL 1100 PM... AT 625 PM CDT...AN ISOLATED STRONG THUNDERSTORM CONTINUED OVER CENTRAL MINNESOTA 30 MILES NORTH OF ST CLOUD NEAR LITTLE FALLS. ELSEWHERE...WIDELY SCATTERED SHOWERS AND THUNDERSHOWERS CONTINUED OVER THE SOUTHEAST QUARTER OF NORTH DAKOTA..EXTREME NORTHEAST SOUTH DAKOTA.. WEST CENTRAL AND CENTRAL MINNESOTA. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. NO SEVERE WEATHER HAD BEEN REPORTED IN THE AREA SINCE 525 PM..HOWEVER CONDITIONS REMAIN FAVORABLE FOR THE FORMATION OF SEVERE WEATHER IN AND NEAR THE WATCH AREA. PERSONS SHOULD LISTEN TO RADIO AND TV STATIONS FOR FURTHER STATEMENTS AND WARNINGS. VOELKER
Special weather statement, Jun 17, 7:37 PM CDT, 2 hours 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 735 PM CDT TUE JUN 17 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR SOUTHEAST NORTH DAKOTA.. NORTHEAST SOUTH DAKOTA AND CENTRAL MINNESOTA UNTIL 1100 PM... AT 726 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS...A FEW WITH HEAVY RAIN...WERE LOCATED OVER EAST CENTRAL AND SOUTHEAST NORTH DAKOTA AND OVER WEST CENTRAL AND CENTRAL MINNESOTA. THE HEAVIEST THUNDERSTORMS WERE LOCATED BETWEEN PARK RAPIDS AND BRAINERD MINNESOTA. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. NO REPORTS OF SEVERE WEATHER HAD BEEN RECEIVED BY THE NATIONAL WEATHER SERVICE OFFICE IN FARGO AS OF 730 PM CDT...HOWEVER CONDITIONS REMAIN FAVARABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. IF YOU LIVE IN OR NEAR THE WATCH AREA...YOU SHOULD LISTEN TO TV..RADIO..OR NOAA WEATHER RADIO FOR THE LATEST STATEMENTS OR POSSIBLE WARNINGS. MB
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 10:59 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 61 min |
| Jun 18, 12:02 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 58 min |
| Jun 17, 11:36 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wilkin | 54 min |
| Jun 18, 12:18 AM CDT | Severe Thunderstorm Warning | FGF | Douglas | 57 min |
| Jun 18, 12:34 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 56 min |
| Jun 18, 12:58 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 62 min |
| Jun 18, 1:17 AM CDT | Severe Thunderstorm Warning | FGF | Douglas | 43 min |
| Jun 18, 1:37 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 53 min |
| Jun 18, 2:13 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Norman | 47 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1986Severe Thunderstorm Warnings in Minnesota, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.