Archive for August 2007

Weather and Pregnancy

Posted: Friday, August 10, 2007 at 8:34 am
By: Administrator
No Comments | Trackback Bookmark and Share

So being a meteorologist…people ask me questions all the time about the old wives tales.  You know, the ones like "tornadoes can’t cross rivers"  (just check out our U-Share photo gallery with the big tornado crossing the Missouri River on Lewis and Clark near Yankton!)  And then there’s one that applies to my wife and I right now…"a drop in the barometer can trigger labor."  While I’m usually a little skeptical about these weather fables, I’ve always believed this one has some merit.  I lived on a farm growing up and I KNOW cattle and livestock give birth more often during and shortly after a storm moves through.  The theory has more to do with the "change" in air presure over a relatively short period of time.   With the theory in hand, I did some quick research on this subject and came up with two studies.  Feel free to read them and comment below!  By the way, I really hope the barometer drops today!BKArticle Number 1#:Title Association between significant decrease in barometric pressure and onset of labor. Author King EA; Fleschler RG; Cohen SM Address St. Luke’s Episcopal Hospital, Houston, TX 77030, USA. Source J Nurse Midwifery, 1997 Jan-Feb, 42:1, 32-4 Abstract
To determine whether there is any correlation between sudden decrease in barometric pressure and onset of labor, a non-experimental, retrospective study at a 948-bed tertiary care hospital was done. Pregnant patients of 36 weeks gestation or more who presented with spontaneous onset of labor during the 48 hours surrounding the 12 occurrences of significant drop in barometric pressure in 1992 were included in the study. Significantly more occurrences of onset of labor were identified in the 24 hours after a drop in barometric pressure than were identified in the 24 hours prior to the drop in barometric pressure (P < 0.05). Therefore, the overall number of labor onsets increased in the 24 hours following a significant drop in barometric pressure. 
Article Number 2#:Title The effect of changes in atmospheric pressure on the occurrence of the spontaneous onset of labor in term pregnancies. Author Noller KL; Resseguie LJ; Voss V Address Department of Obstetrics and Gynecology, University of Massachusetts Medical School, Worchester, USA. Source Am J Obstet Gynecol, 1996 Apr, 174:4, 1192-7; discussion 1197-9 Abstract
OBJECTIVE: Our purpose was to determine whether there is a relationship between changes in atmospheric pressure and spontaneous onset of labor in term pregnancy. STUDY DESIGN: All women admitted to Medical Center of Central Massachusetts-Memorial Hospital with spontaneous onset of labor at term and who were delivered on the service during a 12-month period represent the cohort for this study. Each maternal chart was abstracted to ensure that each member of the cohort met the inclusion criteria. Hourly recordings of atmospheric pressure made at the Worcester Station of the National Weather Service, Department of Commerce, were used as the meteorologic data points of interest. Least-squares regression was used to determine an equation that expresses the probability of the onset of labor in this cohort as a function of gestational age, which was used to calculate expected numbers for the statistical analyses. Two relationships were studied: (1) the ratio of the observed to the expected number of onsets of labor and (2) the initiation of labor and atmospheric pressure changes in the preceding 3 hours. RESULTS: Three-hour periods of falling atmospheric pressure were less often followed by initiation of labor than were the periods with other types of pressure sequences. No association was observed between the onset of labor and days of low mean pressure. CONCLUSION: Although there was an observed statistically significant association between falling barometric pressure and onset of labor, the magnitude of the difference is not of clinical significance.

Friday Night/Saturday Morning Rain

Posted: Saturday, August 4, 2007 at 12:00 am
By: Administrator
No Comments | Trackback Bookmark and Share

A LOT of much needed rain last night and early this morning through KELOLAND.  Here’s a list of some of the emailed reports to the Storm Center.  Nothing fancy, I just did the easy copy and paste from the reports sent in…

We had 4.75" of rain last night – which is GREAT we have only had .22 rain since June 21st.
We are located 7 miles east of Armour.
…..
8 Miles South & 41/4 East of Alexandria SD
 
 2.95 inches
…..
Good Morning. I was just out and checked my rain gauge, and as of 6:10 a.m. I had 1" but as I write this it has began to rain very heavy agian. I live 3 miles west of little rock. We are getting east winds.
…..
I live 2 1/2 miles north of Brookings.  Our rain gauge had 2.98" of rain this morning.
…..
Good morning! We have 1.07 inches of rain in our rain gauge this morning. Have a good day. 
…..
Hi we received  4.90 in o f rain 8 mi southwest of parkston .  This is official as i  have kelo rain gauage. 
…..
We got 6 inches South of Pukwana on 8/3!!
…..
6+ inches between Stickney and Aurora Center
…..
Rainfall report:  6.25 11 west of Parkston
…..
Hi, I live on the W side of SF, around 32nd and Sertoma.  I had a wonderful 2.2 inches of rain!  Just wanted to share the good news.
…..
Northeast of Corsica we recieved 5.50 in. of rain.
…..
2.6 inches in Alcester, S.D. overnight
…..
We received last night:   Willow Lake 1.6 inches of welcome rain.
…..
here in the little town of oacoma,we had 4.45 inches of rain last night,and thats with the live doppler rain gage
…..
We are 13 miles Southeast of Parkston.  Our electronic rain gauge shows 6.41 inches of rain for last night.
…..
We received 2.02" south of Harrisburg, SD.
….
2.20, 8 miles se of Hitchcock
…..
Good morning, both of my rain gauges measured 3 " of rain–that is out by Skunk Creek on 12th street.
…..
My KELOLAND rain gauge in south Worthington, MN recorded 2.24 inches of rain at 8AM today, August 4, 2007.
…..
PLANKINTON. WE HAD A VERY WELCOME RAIN FRIDAY NIGHT AND SATURDAY MORNING.   THE TOTAL WAS 2.89.
…..
1.83 inches in Tea
…..
 

 
Click a link below for your state’s link to the Community Collaborative Rain, Hail, and Snow Network (CoCoRaHS).
 
South Dakota CoCoRaHS
Iowa CoCoRaHS  
Nebraska CoCoRaHS
 
Sorry, no CoCORaHS currently available for Minnesota.
 
You can also add your own reports below.

Wednesday Rainfall

Posted: Thursday, August 2, 2007 at 9:22 am
By: Administrator
No Comments | Trackback Bookmark and Share

Scattered thunderstorms dumped areas of rain last night across KELOLAND.  Here a few of the reports as of 7am.  Feel free to post your rainfall in the comments section below!

8/2/2007 
 7:00 AM 
 SD-MC-1 
 Montrose 5.8 NW 
1.92
0.0
NA
SD
McCook
 

8/2/2007 
 7:00 AM 
 SD-CY-4 
 Vermillion 4.1 SE 
0.61
0.0
NA
SD
Clay
 

8/2/2007 
 7:00 AM 
 SD-CY-3 
 Vermillion 10.8 NNE 
0.49
0.0
NA
SD
Clay
 

8/2/2007 
 7:00 AM 
 SD-TR-3 
 Marion 0.5 NE 
0.43
0.0
NA
SD
Turner
 

8/2/2007 
 7:00 AM 
 SD-LY-12 
 Reliance 0.1 ESE 
0.35
0.0
NA
SD
Lyman
 

8/2/2007 
 8:00 AM 
 SD-MH-8 
 Hartford 6.4 S 
0.30
0.0
NA
SD
Minnehaha
 

8/2/2007 
 7:00 AM 
 SD-MH-3 
 Sioux Falls 0.4 NW 
0.28
0.0
NA
SD
Minnehaha
 

8/2/2007 
 7:00 AM 
 SD-MH-24 
 Sioux Falls 3.3 WSW 
0.23
0.0
NA
SD
Minnehaha
 

8/2/2007 
 5:00 AM 
 SD-CY-1 
 Vermillion 8.5 N 
0.20
0.0
NA
SD
Clay
 

8/2/2007 
 7:00 AM 
 SD-HM-8 
 Lake Norden 4.3 ENE 
0.17
0.0
NA
SD
Hamlin
 

8/2/2007 
 7:00 AM 
 SD-RB-1 
 Sisseton 3.8 W 
0.15
0.0
NA
SD
Roberts
 

8/2/2007 
 7:00 AM 
 SD-UN-4 
 Elk Point 0.6 ESE 
0.14
0.0
NA
SD
Union
 

8/2/2007 
 7:00 AM 
 SD-MH-23 
 Sioux Falls 3.4 WSW 
0.12
0.0
NA
SD
Minnehaha
 

8/2/2007 
 7:00 AM 
 SD-LY-10 
 Kennebec 2.0 S 
0.11
0.0
NA
SD
Lyman
 

8/2/2007 
 7:00 AM 
 SD-DG-1 
 Dimock 10.2 W 
0.09
0.0
NA
SD
Douglas
 

8/2/2007 
 7:00 AM 
 SD-LY-1 
 Presho 0.3 SSW 
0.08
0.0
NA
SD
Lyman
 

8/2/2007 
 7:00 AM 
 SD-LY-11 
 Presho 7.7 NNE 
0.07
0.0
NA
SD
Lyman
 

8/2/2007 
 7:00 AM 
 SD-MP-1 
 Leola 8.9 ENE 
0.07
0.0
NA
SD
McPherson
 

8/2/2007 
 7:15 AM 
 SD-MH-6 
 Baltic 2.4 W 
0.07
0.0
NA
SD
Minnehaha
 

8/2/2007 
 7:00 AM 
 SD-LY-6 
 Presho 11.6 NNE 
0.06
0.0
NA
SD
Lyman
 

8/2/2007 
 7:00 AM 
 SD-LY-4 
 Kennebec 6.2 SSE 
0.05
0.0
NA
SD
Lyman
 

8/2/2007 
 7:00 AM 
 SD-FR-1 
 Hot Springs 0.5 SSW 
0.03
0.0
NA
SD
Fall River