Montana News

Apr 30, 2010 6:46 PM by KRTV News

Montana storm totals released by National Weather Service

The National Weather Service has released preliminary figures about the spring snow storm that whipped across Montana on Thursday and Friday, and the numbers are rather impressive.

Great Falls received just over 10 inches of snow, while some areas - including portions of the Little Belt Mountains - got as much as 48 inches of snow. The snowfall in Great Falls resulted in the fifth-snowiest April on record, with 23.8 inches reported for the month.

And Great Falls' nickname of the "Windy City" certainly held true; the daily wind speed average on Thursday was 29 miles per hour - the windiest April day since 1978. The strongest gust recorded in Great Falls during this week's storm was 52 mph.

Cut Bank topped even Great Falls, however, with an average wind speed for the day of 38.1 mph - the windiest April day ever in Cut Bank, beating the 1943 record of 35.9 mph.

Click here to see viewer-submitted pictures from around the region.

Here's the complete storm summary from the NWS:

...STORM SUMMARY 28-30 APRIL 2010...

A STRONG WINTER STORM ON THE ANNIVERSARY OF A RECORD-SETTING WINTER STORM IN 2009 RAGED ACROSS PORTIONS OF MONTANA ON 28-30 APRIL 2010. HEAVY SNOWFALL AND STRONG WINDS CAUSED ROADS TO BE CLOSED. HEAVY SNOW COLLECTING ON POWER LINES CAUSED WIDESPREAD POWER OUTAGES. PHONE OUTAGES ALSO OCCURRED. AIRPORT OPERATIONS AT GREAT FALL AIRPORT WERE DISRUPTED...WITH FLIGHTS DIVERTED TO MISSOULA. WINDS DRIFTED THE SNOW INTO LARGE DRIFTS AS DEEP AS FIVE TO NINE FEET IN THE SNOWIEST AREAS. THE HEAVIEST SNOW FELL NEAR THE SWEET GRASS HILLS...THE LITTLE BELT MOUNTAINS...AND THE SNOWY MOUNTAINS.

THE STORM BEGAN WITH RAIN AND SNOW FALLING ACROSS CENTRAL MONTANA ON THE MORNING OF 28 APRIL...AND CONTINUED WITH PERIODS OF HEAVY SNOW THROUGH THE EVENING OF 29 APRIL...BEFORE DECREASING TO LIGHT SNOW ON THE MORNING OF 30 APRIL.

AS THE STORM INTENSIFIED ON 29 APRIL...SNOW AND RAIN BECAME WIDESPREAD ACROSS CENTRAL MONTANA. HEAVY SNOW FELL IN UPSLOPE AREAS OF THE ISLAND RANGES OF CENTRAL MONTANA...THE BEARS PAWS...SNOWYS AND SWEET GRASS HILLS. WINDS WERE VERY STRONG. GUSTS OVER 60 MPH OCCURRED AT ELKHORN RAWS /SOUTH OF HELENA/...CUT BANK AND OTHER LOCATIONS SCATTERED ACROSS TETON THROUGH TOOLE COUNTIES. THE STRONG SURFACE LOW PRESSURE AREA ALSO ESTABLISHED NEW MONTHLY LOWEST PRESSURE AND SOME DAILY WIND GUST RECORDS.

SOME PORTIONS OF THE LITTLE BELT MOUNTAINS RECEIVED UP TO 48 INCHES OF SNOW AND 3.5 INCHES OF PRECIPITATION /MELTED SNOW. AS SUCH...THIS STORM RIVALED THE RECORD EVENT OF LATE APRIL 2009. HOWEVER...THE AIR PRESSURE WAS LOWER AND WINDS STRONGER WITH THIS EVENT. AT GREAT FALLS...10.2 INCHES OF SNOW FELL...WHICH IS THE 13TH LARGEST 24-HOUR AMOUNT OF RECORD. WITH THE LATEST SNOWFALL...GREAT FALLS HAS RECEIVED 23.8 INCHES OF SNOW FOR APRIL...WHICH IS THE FIFTH GREATEST AMOUNT OF RECORD FOR APRIL.

TABLE OF SELECT SNOWFALL AND PRECIPITATION REPORTS...
LOCATION... SNOWFALL /INCHES/ PRECIPITATION /INCHES/

MILLEGAN 48 INCHES 2.50
ONION PARK 43 3.50
STRINGER CREEK 43 3.80
NEAR WHITLASH 36 3.00
CRYSTAL LAKE 34 3.20
BRACKETT CREEK 24 3.30
NEIHART 19.3 1.51
LONE MTN 18 1.20
PICKFOOT CREEK 16 2.00
WALDRON 16 1.00
ROCKY BOY 13 3.60
GREAT FALLS 10.2 1.03

ALONG WITH THE STRONG WIND GUSTS...THE AVERAGE WIND SPEEDS ON 29 APRIL WERE ALSO IMPRESSIVE. THE 60 MPH GUST AT CUT BANK ON 29 APRIL SET A DAILY WIND SPEED RECORD. THE AVERAGE WIND SPEED FOR THE DAY WAS 38.1 MPH...THE WINDIEST DAY OF RECORD IN APRIL AT CUT BANK. THE OLD RECORD WAS 35.9 MPH IN 1943. THIS WAS ALSO THE WINDIEST APRIL DAY AT CUT BANK SINCE 1989. AT HAVRE...THE DAILY WIND SPEED AVERAGE WAS 23.9 MPH...THE WINDIEST APRIL DAY SINCE 1978. AT GREAT FALLS...THE DAILY WIND SPEED AVERAGE OF 29.0 MPH WAS THE WINDIEST APRIL DAY SINCE 1978. THE WIND GUST OF 52 MPH AT GREAT FALLS TIED THE DAILY GUST ON THE 29TH. THESE STRONG WINDS CONTRIBUTED TO THE LOSS OF POWER AND PHONE SERVICE OVER A LARGE PORTION OF CENTRAL MONTANA.

ALSO OF NOTE WAS THE STRENGTH OF THE LOW PRESSURE SYSTEM. AT SEVERAL LOCATIONS THIS WAS THE LOWEST PRESSURE OF RECORD MEASURED DURING THE MONTH OF APRIL. AT THE LOCATIONS THAT SET NEW RECORDS...THIS EXCEEDED THE RECORD LAST SET ON 29 APRIL 1951. ON APRIL 29-MAY 1 1951...A STRONG LOW PRESSURE AREA MOVED ALONG THE INTERNATIONAL BORDER AND PRODUCED VERY HEAVY RAINFALL AND SNOW ACROSS WESTERN AND CENTRAL MONTANA. THE FOLLOWING TABLE SUMMARIZES THE NEW PRESSURE RECORDS.

TABLE OF NEW APRIL LOW-PRESSURE RECORDS...
LOCATION... PRESSURE

CUT BANK 29.10 INCHES/ 984.7 MILLIBARS
GREAT FALLS 29.14 / 986.3
HAVRE 29.06 / 984.7
LEWISTOWN 29.17 / 986.2

THIS STORM OF 2010 ALSO SET NEW APRIL LOW READINGS FOR THE 850 MB AND 700 MB LEVELS AT GREAT FALLS.

»Comments

Top Videos

1 2 3 4

Most Popular