Alert archive / North Dakota / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 156, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 19, 2003, 9:37 PM CDT for Cass County, Traill County, North Dakota. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2003, 9:37 PM CDT (02:37 UTC)
- Expired
- Jul 19, 2003, 10:15 PM CDT
- In force
- 38 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Cass County, ND, Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 50 km from the middle of the area, began a volume at 02:39 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
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 19, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.6 hours before the alert went out and 265 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
- 2126 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2042 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 200237 SVRFGF NDC017-097-200315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 937 PM CDT SAT JUL 19 2003 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA AND SOUTHERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 1015 PM CDT. * AT 929 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES NORTHWEST OF HUNTER...OR ABOUT 36 MILES NORTHWEST OF FARGO...MOVEMENT WAS TO THE SOUTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HUNTER AT 940 PM... ARTHUR AT 950 PM... GARDNER AT 955 PM AND AMENIA AT 1000 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4728 9695 4724 9747 4685 9732 4687 9685 $$ RD/30
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 Jul 19, 8:45 PM CDT, 52 minutes earlier.
Area forecast discussion, Jul 19, 8:45 PM CDT, 52 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 845 PM CDT SAT JUL 19 2003 .CURRENT OBSERVATIONAL OVERVIEW... 01Z MSAS ANALYSIS DEPICTED PRE-FRONTAL TROUGH FROM ARROWHEAD OF MINNESOTA TO NORTHEAST SOUTH DAKOTA WHILE PARENT COLD FRONT WAS POISED FROM SOUTHERN MANITOBA TO NORTHWEST NORTH DAKOTA. LATEST WATER VAPOR IMAGERY INDICATED SOUTHEAST PUNCHING SHORTWAVE TROUGH AND ASSOCIATED 250MB 90KT JET MAX VICINITY OF SOUTHERN MANITOBA. BOTH FEATURES WERE AIDING LARGE SCALE ASCENT AND RESULTANT CONVECTION DEVELOPMENT IN TROPICAL AIRMASS ACROSS NORTHEAST NORTH DAKOTA. .FORECAST DETAILS... CURRENT JUICY AIRMASS IN PLACE/UPPER LEVEL JET INTERACTION AHEAD OF IMPENDING COLD FRONT SHOULD RESULT IN LINGERING CONVECTIVE THREAT WITH SCATTERED SEVERE POTENTIAL THROUGH LATE EVENING. BASED ON EXTRAPOLATION/TIMING OF FRONT WILL LINGER THUNDER THREAT ACROSS FAR SOUTH AND EAST INTO THE MORNING HOURS. HOWEVER SOME UNCERTAINTY EXITS WITH RESPECT TO INTENSITY/AREAL COVERAGE IN THOSE LOCATIONS LATER TONIGHT. WILL UPDATE ZONES RE-EVALUATE CONVECTIVE THREAT AS EVENING PROGRESSES AND BETTER CONVECTIVE TRENDS ARE ESTABLISHED. FGF...NONE. BERG
Hazardous weather outlook, Jul 19, 11:10 AM CDT, 10 hours 27 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-191815- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 1110 AM CDT SAT JUL 19 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT ISOLATED SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER EASTER NORTH DAKOTA AND NORTHWESTERN MINNESOTA BETWEEN 4 PM TODAY AND 3 AM TONIGHT. A WEAK TROUGH OF LOW PRESSURE WILL MOVE EAST INTO NORTHWESTERN MINNESOTA THIS AFTERNOON. SCATTERED THUNDERSTORMS ARE EXPECTED ALONG THIS TROUGH THIS AFTERNOON AND EARLY EVENING EAST OF THE RED RIVER...WITH A FEW OF THESE POSSIBLY SEVERE WITH DAMAGING WINDS AND LARGE HAIL. THERE IS ALSO A SMALL CHANCE FOR AN ISOLATED THUNDERSTORM OVER EASTERN NORTH DAKOTA LATE THIS AFTERNOON OR EVENING. THERE IS A GREATER CHANCE FOR THUNDERSTORMS TONIGHT ACROSS THE REGION..A FEW OF THESE MAY BECOME SEVERE AS WELL WITH DAMAGING WINDS AND LARGE HAIL. A STRONGER FRONT WILL DROP SOUTHEAST OUT OF CANADA AND INTO NORTHWEST NORTH DAKOTA THIS AFTERNOON AND ACROSS EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA OVERNIGHT. THIS FRONT WILL HAVE BETTER UPPER LEVEL SUPPORT AND IS EXPECTED TO GIVE A BETTER CHANCE FOR THUNDERSTORM DEVELOPMENT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A FEW THUNDERSTORMS MAY LINGER INTO SUNDAY MORNING ACROSS SOUTHEAST NORTH DAKOTA AND WEST CENTRAL MINNESOTA. A CHANCE OF THUNDERSTORMS EXISTS AGAIN LATE THURSDAY INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AFTER 4 PM TODAY AND THROUGH THE EVENING. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT HTTP://WWW.CRH.NOAA.GOV/FGF/INDEX.HTML (ALL LOWER CASE) RIDDLE
In the hours before
Local storm report, Jul 19, 8:02 PM CDT, 1 hour 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
802 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0750 PM 4 N BROCKET ND 1.00 INCH HAIL
07/19/03 RAMSEY
0750 PM 15 S ADAMS ND 1.75 INCH HAIL
07/19/03 WALSH
WJBLocal storm report, Jul 19, 8:09 PM CDT, 1 hour 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
809 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0755 PM 3 SE WHITMAN ND 1.00 INCH HAIL
07/19/03 NELSON
0805 PM 3 NE PETERSBURG ND .88 INCH HAIL
07/19/03 NELSON REPORTED BY PUBLIC.
WJBLocal storm report, Jul 19, 8:41 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
841 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0825 PM 3 S NIAGARA ND .75 INCH HAIL
07/19/03 GRAND FORKS
0830 PM 3.5 NW LOGAN CENTER ND .75 INCH HAIL
07/19/03 GRAND FORKS
WJBLocal storm report, Jul 19, 8:43 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
843 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0825 PM 3 S NIAGARA ND .75 INCH HAIL
07/19/03 GRAND FORKS
0830 PM 3.5 NW LOGAN CENTER ND .88 INCH HAIL
07/19/03 GRAND FORKS
WJBLocal storm report, Jul 19, 8:57 PM CDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
857 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0845 PM 6 W NORTHWOOD ND .75 INCH HAIL
07/19/03 GRAND FORKS
WJBLocal storm report, Jul 19, 9:17 PM CDT, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
917 PM CDT SAT JUL 19 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0850 PM 9 ENE SHARON ND 70 MPH TSTORM WIND
07/19/03 STEELE REPORTED BY PUBLIC.
0900 PM 14 NE FINLEY ND 1.00 INCH HAIL
07/19/03 STEELE REPORTED BY PUBLIC.
WJBThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 7:29 PM CDT | Severe Thunderstorm Warning | FGF | Nelson, Ramsey, Walsh | 61 min |
| Jul 19, 8:09 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 66 min |
| Jul 19, 8:34 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 56 min |
| Jul 19, 8:53 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 37 min |
| Jul 19, 10:00 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 45 min |
| Jul 19, 10:24 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 51 min |
| Jul 20, 2:48 AM CDT | Severe Thunderstorm Warning | FGF | Ransom, Sargent | 42 min |
| Jul 20, 4:13 AM CDT | Severe Thunderstorm Warning | FGF | Sargent | 47 min |
| Jul 20, 5:01 AM CDT | Severe Thunderstorm Warning | FGF | Sargent | 44 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2003Every severe thunderstorm warning in 2003
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.