Air carrier was not advised of low level wind shear prior to departure.

Attributes
ACN	137238
Time
Date	199002
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lga
State Reference	NY
Altitude	agl bound lower : 700 agl bound upper : 1500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : lga
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 13000 flight time type : 1600
ASRS Report	137238
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

We were departing runway 4 at lga. There was no mention by tower of turbulence or wind shear. At approximately 700' AGL in a turn to 070 degrees (IMC) we got moderate to severe turbulence and wind shear with loss of over 20 KTS. Turbulence continued to 1500'. We told lga departure control to report turbulence and wind shear to lga tower, so other aircraft taking off would know what to expect. Lga departure said he had already told lga tower, but apparently they were not relaying it on to aircraft taking off! This could have easily been a disaster due to tower not giving known information to aircraft taking off. Tower controller was busy with aircraft landing on runway 13 and takeoffs on runway 4, but that still is no excuse for not passing on information to us and other aircraft.

Original NASA ASRS Text

Title: ACR WAS NOT ADVISED OF LOW LEVEL WIND SHEAR PRIOR TO DEP.

Narrative: WE WERE DEPARTING RWY 4 AT LGA. THERE WAS NO MENTION BY TWR OF TURB OR WIND SHEAR. AT APPROX 700' AGL IN A TURN TO 070 DEGS (IMC) WE GOT MODERATE TO SEVERE TURB AND WIND SHEAR WITH LOSS OF OVER 20 KTS. TURB CONTINUED TO 1500'. WE TOLD LGA DEP CTL TO RPT TURB AND WIND SHEAR TO LGA TWR, SO OTHER ACFT TAKING OFF WOULD KNOW WHAT TO EXPECT. LGA DEP SAID HE HAD ALREADY TOLD LGA TWR, BUT APPARENTLY THEY WERE NOT RELAYING IT ON TO ACFT TAKING OFF! THIS COULD HAVE EASILY BEEN A DISASTER DUE TO TWR NOT GIVING KNOWN INFO TO ACFT TAKING OFF. TWR CTLR WAS BUSY WITH ACFT LNDG ON RWY 13 AND TKOFS ON RWY 4, BUT THAT STILL IS NO EXCUSE FOR NOT PASSING ON INFO TO US AND OTHER ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.