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HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports in May 1970

Public hail, wind, and tornado reports across the United States in May 1970 from May 5, 1970 through May 31, 1970, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Pick any date to see hail, wind and tornado public reports for that day — e.g. September 18, 2026.
Hail Reports
189
Wind Reports
192
Tornado Reports
89
Max Hail Size
4.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · May 1970 · 1970–present Updated  Daily · last May 31, 1970

NWS Hail Reports in May 1970

30 reports
Free hail report for your home →
1.00″ hail
May 31, 1970
6:50 PM CST
Hail report for May 1970
Crosby County · 2,141 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.00″ hail
May 31, 1970
6:30 PM CST
Hail report for May 1970
Crosby County · 2,141 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.00″ hail
May 31, 1970
4:00 PM CST
Hail report for May 1970
Dubuque County · 30,447 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IA
0.75″ hail
May 31, 1970
3:30 PM CST
Hail report for May 1970
Gray County · 8,680 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.00″ hail
May 30, 1970
9:35 PM CST
Hail report for May 1970
Denver County · 145,266 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, CO
1.75″ hail
May 30, 1970
7:30 PM CST
Hail report for May 1970
Dawson County · 4,332 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.75″ hail
May 30, 1970
6:10 PM CST
Hail report for May 1970
Bexar County · 521,494 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.75″ hail
May 30, 1970
6:00 PM CST
Hail report for May 1970
Lyman County · 1,269 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, SD
2.75″ hail
May 30, 1970
5:20 PM CST
Hail report for May 1970
Jones County · 307 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, SD
1.75″ hail
May 29, 1970
8:10 PM CST
Hail report for May 1970
Swisher County · 2,585 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
1.75″ hail
May 29, 1970
6:15 PM CST
Hail report for May 1970
Pottawatomie County · 22,561 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, OK
0.75″ hail
May 29, 1970
6:00 PM CST
Hail report for May 1970
Linn County · 68,380 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IA
1.00″ hail
May 29, 1970
6:00 PM CST
Hail report for May 1970
Warren County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, MS
1.00″ hail
May 29, 1970
5:50 PM CST
Hail report for May 1970
Pulaski County · 123,055 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, AR
0.75″ hail
May 29, 1970
5:20 PM CST
Hail report for May 1970
Howard County · 10,479 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, TX
Showing 15 of 30
Hail Damage Risk for Your Home +

Hail reports describe hail by diameter, often comparing stone size to familiar objects like peas, quarters, golf balls, and softballs. Use this guide as a starting point for possible hail damage to your roof, siding, gutters, vents, windows, and exterior. Actual hail damage depends on hail hardness, density, wind speed, impact angle, roof age, shingle condition, roof pitch, roofing material, installation quality, and prior storm damage.

Pea
0.25″
Low

Usually too small to cause hail damage to most sound asphalt roofs, siding, or gutters.

Mothball
0.50″
Sub-Severe Watch

Below the NWS severe-hail threshold, but not always harmless. Repeated small hail can scuff surfaces, wear aging shingles, and loosen protective granules over time.

Penny
0.75″
Minor / Watch

Below the NWS severe-hail threshold, but roof hail damage is still possible on older, brittle, poorly installed, or previously damaged shingles. May also mark screens, vents, gutters, and soft metal.

Nickel
0.88″
Minor / Watch

Still below the severe-hail threshold, but large enough to leave visible marks on soft metal and add wear to older or hail-weakened roof shingles.

Quarter
1.00″
Watch

The NWS severe-hail threshold. Quarter-size hail can bruise shingles, dent soft metal, and create roof hail damage worth checking.

Half Dollar
1.25″
Watch

More likely to dent gutters, vents, flashing, and siding. Hail damage risk rises quickly on older roofs or hail-weakened shingles.

Ping Pong / Walnut
1.50″
Likely

Hail damage becomes more likely, including bruised shingles, granule loss, dented siding, and damaged roof vents.

Golf Ball
1.75″
Likely

Often causes roof hail damage, cracked shingles, dented gutters, damaged flashing, and siding impacts. A roof inspection is recommended.

Hen Egg
2.00″
Serious

Can crack or puncture shingles, expose mat, dent siding, and cause widespread hail damage across the roof and exterior.

Tennis Ball
2.50″
Serious

Can cause heavy roof hail damage, punctured siding, broken skylights, damaged vents, and widespread exterior damage.

Baseball
2.75″
Major

Major hail damage is likely, including severe roof impacts, damaged siding, broken windows, and possible major roof repairs.

Tea Cup / Large Apple
3.00″
Major

Can cause heavy hail damage across the roof, siding, gutters, windows, and exterior. Significant repairs are often needed.

Softball
4.00″
Extreme

Destructive hail damage. Can severely damage roofing materials, siding, windows, gutters, vents, vehicles, and exterior surfaces.

Grapefruit
4.50″
Extreme

Catastrophic hail damage risk for roofs, windows, vehicles, siding, gutters, and exterior surfaces.

Source: NOAA / National Weather Service hail size references are used for hail-size comparisons and the 1.00″ severe-hail threshold. Damage descriptions are general homeowner guidance, not official NOAA/NWS damage ratings. Sub-severe hail under 1.00″ is below the severe threshold, but that does not mean “no roof damage.” Penny- to nickel-size hail can still contribute to granule loss, cosmetic surface marks, and added wear, especially on older, brittle, poorly installed, or previously damaged roofs.

NWS Wind Reports in May 1970

30 reports
Free hail report + wind check →
UNK mph
May 31, 1970
8:50 PM CST
Wind report for May 1970
Outagamie County · 56,809 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
UNK mph
May 31, 1970
6:17 PM CST
Wind report for May 1970
Lake County · 179,407 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, IL
UNK mph
May 31, 1970
6:15 PM CST
Wind report for May 1970
Rankin County · 47,548 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, MS
58 mph
May 31, 1970
4:57 PM CST
Wind report for May 1970
Hale County · 10,140 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, TX
63 mph
May 31, 1970
9:00 AM CST
Wind report for May 1970
Cameron County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, TX
59 mph
May 30, 1970
11:33 PM CST
Wind report for May 1970
Geary County · 7,946 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, KS
UNK mph
May 30, 1970
7:25 PM CST
Wind report for May 1970
Randall County · 42,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, TX
58 mph
May 30, 1970
7:23 PM CST
Wind report for May 1970
Merrick County · 3,147 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, NE
63 mph
May 30, 1970
2:48 PM CST
Wind report for May 1970
Dawes County · 3,010 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, NE
74 mph
May 30, 1970
9:30 AM CST
Wind report for May 1970
Nueces County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, TX
UNK mph
May 29, 1970
6:00 PM CST
Wind report for May 1970
Faulkner County · 35,293 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, AR
UNK mph
May 29, 1970
5:17 PM CST
Wind report for May 1970
Terry County · 4,053 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, TX
UNK mph
May 29, 1970
4:15 PM CST
Wind report for May 1970
St. Louis city
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, MO
UNK mph
May 29, 1970
3:15 PM CST
Wind report for May 1970
Cook County · 903,365 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, IL
UNK mph
May 29, 1970
1:15 AM CST
Wind report for May 1970
Canadian County · 50,071 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, OK
Showing 15 of 30
Wind Damage Risk for Your Home +

Storm reports list thunderstorm wind gusts in mph. The NWS marks storms as severe at 58+ mph, but wind damage to your home depends on roof age, shingle condition, installation, exposure, nearby trees, and prior hail or wind damage.

Below Severe
Under 58 mph
Minor

Usually little damage to a sound roof, but loose shingles, flashing, or debris may shift.

Severe
58–74 mph
Watch

Can loosen shingles, lift flashing, break limbs, and damage gutters, siding, fences, or trim.

Damaging
75–90 mph
Serious

Can peel shingles, damage vents, tear siding, rip gutters, and expose weak roof areas.

Extreme
90+ mph
Major

Can cause major roof covering loss, tree damage, broken windows, and structural damage.

Source: NOAA / National Weather Service storm reports. Gusts may be measured or estimated; actual wind damage varies by roof condition, exposure, and prior hail or wind damage.

NWS Tornado Reports in May 1970

30 reports
F2 category
May 31, 1970
9:20 PM CST
Tornado report for May 1970
Martin County · 1,589 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, TX
F1 category
May 31, 1970
3:25 PM CST
Tornado report for May 1970
Randall County · 42,834 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, TX
F0 category
May 31, 1970
2:07 PM CST
Tornado report for May 1970
Carson County · 2,423 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, TX
F0 category
May 30, 1970
10:15 PM CST
Tornado report for May 1970
Kingsbury County · 2,214 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F0 category
May 30, 1970
3:00 PM CST
Tornado report for May 1970
Hutchinson County · 2,810 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
F2 category
May 30, 1970
2:55 PM CST
Tornado report for May 1970
Stanton County · 686 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, KS
F1 category
May 30, 1970
8:00 AM CST
Tornado report for May 1970
Kleberg County · 9,082 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, TX
F0 category
May 29, 1970
5:50 PM CST
Tornado report for May 1970
Okfuskee County · 3,604 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, OK
F0 category
May 29, 1970
2:30 PM CST
Tornado report for May 1970
Cape Girardeau County · 25,427 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, MO
F0 category
May 29, 1970
11:35 AM CST
Tornado report for May 1970
Irwin County · 2,869 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, GA
F0 category
May 28, 1970
6:30 PM CST
Tornado report for May 1970
Jackson County · 9,675 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, OK
F0 category
May 28, 1970
6:05 PM CST
Tornado report for May 1970
Jackson County · 9,675 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, OK
F0 category
May 28, 1970
5:45 PM CST
Tornado report for May 1970
Jackson County · 9,675 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, OK
F0 category
May 28, 1970
3:30 PM CST
Tornado report for May 1970
Dickey County · 1,972 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, ND
F0 category
May 27, 1970
4:00 PM CST
Tornado report for May 1970
Eddy County · 19,305 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, NM
Showing 15 of 30
Tornado Damage Risk for Your Home +

After a tornado, the National Weather Service assigns an EF rating from EF0 to EF5 based on surveyed damage. The rating estimates wind speed from what the tornado damaged, so actual damage can vary by construction quality, roof age, garage doors, windows, trees, debris, and how close the home was to the tornado path.

EF0
65–85 mph
Light

Can peel shingles, damage gutters or siding, break tree limbs, and toss loose outdoor items.

EF1
86–110 mph
Moderate

Can strip roof covering, damage exterior doors, break windows, snap trees, and cause heavier siding or gutter damage.

EF2
111–135 mph
Serious

Can tear off large sections of roofing, break or uproot trees, destroy weaker structures, and cause major exterior damage.

EF3–EF5
136+ mph
Severe

Can remove roofs and walls, destroy large portions of homes, toss vehicles, and cause severe to total destruction near the path.

Source: NOAA / National Weather Service. EF ratings are assigned after a post-storm damage survey and are based on observed damage, not a direct measurement at every home.

NWS Hail, Wind and Tornado Reports in May 1970 on the Interactive Map

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Browse NWS Storm Reports by Day in May 1970

May 31, 1970 12
Hail, wind & tornado reports
May 30, 1970 14
Hail, wind & tornado reports
May 29, 1970 15
Hail, wind & tornado reports
May 28, 1970 12
Hail, wind & tornado reports
May 27, 1970 12
Hail, wind & tornado reports
May 26, 1970 7
Hail, wind & tornado reports
May 25, 1970 38
Hail, wind & tornado reports
May 24, 1970 38
Hail, wind & tornado reports
May 23, 1970 24
Hail, wind & tornado reports
May 22, 1970 16
Hail, wind & tornado reports
May 21, 1970 19
Hail, wind & tornado reports
May 20, 1970 4
Hail, wind & tornado reports
May 17, 1970 1
Hail, wind & tornado reports
May 16, 1970 8
Hail, wind & tornado reports
May 15, 1970 20
Hail, wind & tornado reports

Get a Remote Hail Inspection

Not sure if hail may have affected your home in May 1970? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.

Frequently asked questions

for homeowners, buyers & sellers
How many storm reports were recorded in May 1970?

Our records show 189 hail, 192 wind, and 89 tornado reports in May 1970, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 31, 1970.

What was the largest hail reported in May 1970?

The largest hail size in these storm-report records in May 1970 is 4.00″, reported near Elk City, OK.

Some reports show UNK instead of a wind speed or tornado rating — what does that mean?

Wind reports come three ways: measured from an instrument, estimated from the damage observed, or UNK when no speed was recorded. Tornadoes show UNK until the National Weather Service finishes a damage survey and assigns an EF rating. UNK simply means that value was not available when the report was filed.

A report appeared near my home in May 1970 — is my roof damaged?

Not necessarily. A storm report shows that hail, wind, or a tornado was observed nearby, not that any specific home was hit. To find out whether your property was affected, check an address-level hail report, and if it looks significant, ask a local pro about a Remote Hail Inspection before scheduling roof work.

I am buying or selling a home — how do these in May 1970 reports help?

If a storm passed through, a roof or exterior may have damage that is hard to see, or a recent repair may trace back to it. Buyers can ask better questions before closing, and sellers can document the home condition up front — both starting from the property address rather than a whole region.

How do I check what happened at a specific address in May 1970?

Use the address search to pull a free address-level hail report for any property — no phone number or email required. It shows recent hail activity for that address so you know whether a closer roof or exterior review makes sense.

Where does this storm report data come from, and what are its limits?

Storm reports on this page are public reports from storm events in May 1970 across the United States, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported, but they do not confirm damage at any specific property. Report locations, sizes, and times may be approximate and can vary from what an individual home experienced. For property-specific hail history, use an address-level hail report or contact a participating local professional for a remote hail inspection. Pros inclusion is not an endorsement, and contacting a professional does not confirm damage at any property.

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