Hail, Norman
- When
- July 20, 5:17 AM CST
- Where
- Norman County, 1.46 mi SSW of Hendrum
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 47.250, -96.830
Hail in Minnesota, July 20, 2009
A trough of low pressure pushed through eastern North Dakota and into the Red River Valley and helped ignite a few thunderstorms. A good push of warm air in the lower layers of the atmosphere also helped sustain these storms.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 3
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS FGF wrote it up.
A trough of low pressure pushed through eastern North Dakota and into the Red River Valley and helped ignite a few thunderstorms. A good push of warm air in the lower layers of the atmosphere also helped sustain these storms.
What forecasters said that day
The local office's own words before the first event, 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 the first event at Jul 20, 2:44 AM CST, 2 hours 33 minutes earlier.
Area forecast discussion, Jul 20, 2:44 AM CST, 2 hours 33 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 344 AM CDT MON JUL 20 2009 .DISCUSSION... MAIN FORECAST CHALLENGE IS PCPN. WHEN LOOKING AT THE LATEST SURFACE ANALYSIS...AN AREA OF LOW PRESSURE IS LOCATED IN N SD WITH AN INVERTED TROF EXTENDING THROUGH ND ALONG A BIS TO MOT LINE. WHEN LOOKING AT THE MODELS...THE MODELS ARE IN PRETTY GOOD AGREEMENT WITH SOME TIMING DIFFERENCES...ESPECIALLY LATER IN THE FORECAST. THEREFORE...ENDED UP LEANING TOWARDS THE ADJMAVBC GUIDANCE FOR TEMPS AND USED A GFS/NAM BLEND FOR POPS. THE SURFACE BOUNDARY CONTINUES TO MOVE TO THE E TODAY...AND ALONG WITH IT THE MAIN FOCUS FOR CONVECTION. ISOLD SVR TSRA HAVE BEEN OCCURRING THROUGH THE NIGHT WITH THE MAIN SEVERE WEATHER THREAT FROM THESE PULSE STORMS BEING LARGE HAIL. ALTHOUGH A PERIOD OF WEAKENING CAN BE ANTICIPATED THROUGH THE MORNING INTO EARLY AFTERNOON HOURS... CONTINUED MONITORING WILL NEED TO OCCUR DUE TO THE NATURE OF THESE STORMS. THE FRONT IS EXPECTED TO MOVE OUT OF THE AREA TONIGHT... TAKING THE PCPN THREAT WITH IT. FOR TUE INTO THU...SURFACE HIGH PRESSURE WILL KEEP THE N PLAINS DRY WITH TEMPERATURES NEAR TO SLIGHTLY BELOW NORMAL. THE NEXT CHANCE FOR PCPN ARRIVES ON THU NIGHT AND LASTS INTO THE WEEKEND AS ANOTHER LOW PRESSURE SYSTEM MOVES OUT OF THE ROCKIES INTO THE N PLAINS. && .AVIATION... VFR CIGS AND VSBYS EXPECTED TODAY WITH THE POTENTIAL FOR TSRA MOVING FROM W TO E ACROSS THE AREA IN CONJUNCTION WITH A FRONTAL PASSAGE TODAY INTO THIS EVENING. SE-S WINDS AROUND 15 KTS GUSTING TO 25 KTS...EXPECTED TO TURN TO THE SW-W AS THE FRONT PASSES AND DIMINISH TO AROUND 10 KTS. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && NG
Hazardous weather outlook, Jul 19, 5:48 AM CST, 23 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 648 AM CDT SUN JUL 19 2009 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-201200- WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS- WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE- EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN- SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER- PEMBINA-BENSON-RAMSEY-EASTERN WALSH COUNTY-EDDY-NELSON- GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT- RICHLAND-WESTERN WALSH COUNTY- 648 AM CDT SUN JUL 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE POSSIBLE MAINLY WEST OF THE RED RIVER VALLEY LATE TONIGHT AHEAD OF AN APPROACHING COLD FRONT. ANY STORMS WHICH OCCUR ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY CHANCES FOR THUNDERSTORMS WILL CONTINUE MONDAY AND MONDAY NIGHT AS A COLD FRONT MOVES SLOWLY ACROSS THE REGION. THESE STORMS ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. VOELKER
In the hours before
Special weather statement, Jul 20, 12:47 AM CST, 4 hours 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 147 AM CDT MON JUL 20 2009 NDZ015-200715- RAMSEY ND- 147 AM CDT MON JUL 20 2009 ...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA... UNTIL 215 AM CDT AT 146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL. THE STORM WAS LOCATED 4 MILES EAST OF STARKWEATHER...OR 23 MILES NORTH OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. THE THUNDERSTORM WILL BE NEAR... DERRICK AT 215 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. && LAT...LON 4854 9834 4832 9833 4834 9888 4854 9890 TIME...MOT...LOC 0647Z 259DEG 18KT 4844 9878 TG/JK
Special weather statement, Jul 20, 2:49 AM CST, 2 hours 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 349 AM CDT MON JUL 20 2009 NDZ027-200915- GRAND FORKS ND- 349 AM CDT MON JUL 20 2009 ...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... UNTIL 415 AM CDT AT 348 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL. THE STORM WAS LOCATED 4 MILES NORTHWEST OF KEMPTON...OR 29 MILES WEST OF GRAND FORKS...MOVING TO THE EAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR... KEMPTON AT 355 AM CDT...ARVILLA AT 410 AM CDT...EMERADO AT 415 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. && LAT...LON 4804 9727 4773 9720 4773 9782 4798 9784 TIME...MOT...LOC 0849Z 259DEG 21KT 4785 9767 JK
Special weather statement, Jul 20, 2:56 AM CST, 2 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 356 AM CDT MON JUL 20 2009 NDZ007-200930- CAVALIER ND- 356 AM CDT MON JUL 20 2009 ...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA... UNTIL 430 AM CDT AT 355 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL. THE STORM WAS LOCATED NEAR LANGDON...MOVING TO THE EAST AT 25 MPH. THE THUNDERSTORM WILL BE ABOUT... 7 MILES WEST OF OLGA AT 430 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. && LAT...LON 4896 9800 4869 9796 4867 9851 4892 9856 TIME...MOT...LOC 0856Z 261DEG 13KT 4878 9837 JK
Local storm report, Jul 20, 3:17 AM CST, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
417 AM CDT MON JUL 20 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0350 AM HAIL 2 N LANGDON 48.79N 98.37W
07/20/2009 E0.88 INCH CAVALIER ND LAW ENFORCEMENT
PEA TO NICKEL SIZED HAIL WITH 1.10 INCHES OF RAIN.
&&
JKAISERSpecial weather statement, Jul 20, 3:20 AM CST, 1 hour 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 420 AM CDT MON JUL 20 2009 MNZ001-NDZ027-200945- WEST POLK MN-GRAND FORKS ND- 420 AM CDT MON JUL 20 2009 ...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA AND SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... UNTIL 445 AM CDT AT 417 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL. THE STORM WAS LOCATED 7 MILES SOUTH OF EMERADO...OR 16 MILES SOUTHWEST OF GRAND FORKS...MOVING TO THE EAST AT 30 MPH. THE THUNDERSTORM WILL BE NEAR... THOMPSON AT 440 AM CDT...GRAND FORKS AT 445 AM CDT... INTERSTATE 29 BETWEEN MILE MARKERS 126 AND 144 AT 440 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. && LAT...LON 4804 9687 4768 9676 4768 9748 4799 9752 TIME...MOT...LOC 0920Z 263DEG 28KT 4782 9736 NG
Special weather statement, Jul 20, 4:53 AM CST, 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 553 AM CDT MON JUL 20 2009 MNZ002-NDZ030-201145- NORMAN MN-TRAILL ND- 553 AM CDT MON JUL 20 2009 ...THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN NORMAN COUNTY IN NORTHWEST MINNESOTA AND SOUTHEASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA... UNTIL 645 AM CDT AT 552 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING UP TO NICKEL SIZE HAIL. THE STORM WAS LOCATED 4 MILES EAST OF BLANCHARD...OR 35 MILES NORTHWEST OF FARGO...MOVING TO THE EAST AT 30 MPH. THE THUNDERSTORM WILL BE NEAR... KELSO AT 600 AM CDT...9 MILES SOUTH OF CALEDONIA AT 615 AM CDT... HALSTAD AT 620 AM CDT... INTERSTATE 29 BETWEEN MILE MARKERS 96 AND 102 AT 600 AM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. && LAT...LON 4749 9662 4725 9662 4725 9731 4750 9730 TIME...MOT...LOC 1053Z 272DEG 27KT 4734 9712 JK
The radar
The Fargo/Grand Forks radar (KMVX), 48 km away, was scanning. The volume nearest the first event began at 11:16 UTC.
Event by event
3 hail. Local standard time, as filed.
Hail, Norman
- When
- July 20, 5:20 AM CST
- Where
- Norman County, 3.1 mi NNE of Perley
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 47.220, -96.790
Hail, Norman
- When
- July 20, 5:20 AM CST
- Where
- Norman County, 5.05 mi ESE of Hendrum
- Measured
- 0.88 in hail
- Reported by
- Public
- Coordinates
- 47.230, -96.730
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Hail in Colorado, July 20, 2009
- Tornadoes and Hail in Kansas, July 20, 2009
- Tornadoes and Flash Flood in Kansas, July 20 to 21, 2009
- Damaging Wind in South Dakota, July 20, 2009
- Flash Flooding and Damaging Wind in Arkansas, July 20, 2009
- Hail and Damaging Winds in Nebraska, July 20, 2009
- Hail and Damaging Winds in Kansas, July 20, 2009
- Flash Flooding in North Carolina, July 20, 2009
- Hail and Damaging Winds in Arkansas, July 20, 2009
- Flash Flood and Hail in North Carolina, July 20, 2009
- Hail and Damaging Winds in Oklahoma, July 20 to 21, 2009
- Flash Flooding and Hail in West Virginia, July 20, 2009
More
Every storm in Minnesota in 2009Every state in 2009This day in weather historyWarnings in Minnesota, July 2009
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 173157, 173158, 173159.