Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 99, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 25, 1999, 9:10 PM CDT for Ramsey County, Walsh County, North Dakota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 25, 1999, 9:10 PM CDT (02:10 UTC)
- Expired
- Jun 25, 1999, 9:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Ramsey County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 110 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 25, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 2.2 hours before the alert went out and 254 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
- 4959 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1683 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 25.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 260212 RRA SVRFAR NDC071-099-260245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 910 PM CDT FRI JUN 25 1999 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN RAMSEY COUNTY IN NORTHEASTERN NORTH DAKOTA WESTERN WALSH COUNTY IN NORTHEASTERN NORTH DAKOTA * UNTIL 945 PM CDT * AT 909 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 26 MILES SOUTH OF LANGDON OR 10 MILES SOUTHWEST OF FAIRDALE... MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... FAIRDALE AT 929 PM CDT ADAMS AT 939 PM CDT REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED WARNING. HOPPES
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.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 3:31 PM CDT, 5 hours 39 minutes earlier.
Area forecast discussion, Jun 25, 3:31 PM CDT, 5 hours 39 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 300 PM CDT FRI JUN 25 1999 H5 HGTS FALL AS UPR LOW OVR THE PAC NW MOVS N OF LAKE WINNIPEG BY 12Z SUNDAY. THERMODYNAMICS RICH ACRS SD AND SRN ND BUT MOST OF UPR DYNAMICS FARTHER TO THE NW OVR MT. ETA WANTS TO HOLD VRT MOTN ACRS SRN ND WHILE NGM ADVECTS TO THE NE ACRS CWFA. VSB STLT LOOP HAS ESSENTIALLY A CLR SKY OVR SRN 2/3 OF ERN ND AND ADJ PARTS OF NW MN AND SHOULD BE A CAPPED ENVIRONMENT. BEST PRES FALLS WERE OCCURRING IN NE ND AHEAD OF WM FNT. PRES FALL CNTR HAS BEEN MOVG N/NE. 88D HAS HAD ISOLD CELLS FORM AHEAD CLR CAPPED AREA IN NRN 1/3 OF CWFA. VAD WNDS OFF OF NEARBY 88D DOES NOT SUGGEST THE H8 SPEED CONVERGENCE INDICATED BY THE ETA. SO NGM APPEARS TO HAVE THE BEST HANDLE ON ABV SCENARIO AND IS PREFERRED. 16Z BIS SNDG SHOWS GOOD CAP WITH ABT 95F SFC TEMP NEEDED TO BREAK CAP AT BIS. WM FRONTAL CONVERGENCE SHOULD AID BREAKING CAP AT L WER TEMPS. SFC LOW E OF DIK AND MOVG E AT GOOD CLIP. LOOK FOR TSTRMS TO FIRE IN CNTRL ND AND MOV NE INTO ERN ND LATE AFTN AND INTO THE EVE. SHOULD BE A WARM HUMID NIGHT WITH HIGH DWPTS. LITTLE COOLER FOR SAT AS TROF/WND SHFT WL MOV INTO ERN ND BY SAT MORN. MID LVL CLD DECK EXPECTED TO HOLD TEMPS DOWN FOR SAT. .EXTENDED...MODELS ADVERTISING A RETURN TO A ZONAL MORE PROGRESSIVE PATTERN BY TUESDAY. H850 TEMPS COOL DOWN TO NEAR 10C FOR MONDAY...AND RECOVER INTO THE TEENS THEREAFTER. THIS WILL RESULT IN TEMPS BELOW NORMAL ON MON...AND NEAR NORMAL FOR TUE/WED. SURFACE HIGH WILL CREST OVER FA ON MONDAY...WITH SEVERAL SHORTWAVES AND COOL AIR ALOFT TO SPELL UNSETTLED WEATHER FOR TUE/WED. WILL INTRODUCE SHOWERS/T-STORMS PFOR TUE/WED AND KEEP MONDAY DRY. .FGF...SVR TSRA WATCH #470 TIL 10 PM CDT. HOPPES/DK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 7:54 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 36 min |
| Jun 25, 8:23 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 47 min |
| Jun 25, 9:05 PM CDT | Flash Flood Warning | FGF | Benson, Ramsey | 3 hr |
| Jun 25, 11:17 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 33 min |
| Jun 25, 11:37 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 33 min |
| Jun 26, 12:01 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Steele | 49 min |
| Jun 26, 12:01 AM CDT | Severe Thunderstorm Warning | FGF | Traill | 49 min |
| Jun 26, 1:15 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 30 min |
| Jun 26, 1:33 AM CDT | Severe Thunderstorm Warning | FGF | Traill | 32 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1999Every severe thunderstorm warning in 1999
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.